diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 07bd38b..d251f5f 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -36,7 +36,9 @@ jobs:
         uses: pre-commit/action@v2.0.3
 
       - name: Install tox
-        run: pip install tox
+        run: |
+          pip install -U pip
+          pip install tox
 
       - name: Cache tox environments
         id: cache-tox
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index b6d1fa4..7bb4749 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -2,6 +2,19 @@
 Change log
 ##########
 
+0.3.0 (2022-05-24)
+==================
+
+Improved handling of the JupyterLab pod for noteburst workers:
+
+- If the JupyterLab pod goes away (such as if it is culled), the Noteburst workers shuts down so that Kubernetes creates a new worker with a new JupyterLab pod. A lost JupyterLab pod is detected by a 400-class response when submitting a notebook for execution.
+
+- If a worker starts up and a JupyterLab pod already exists for an unclaimed identity, the noteburst worker will continue to cycle through available worker identities until the JupyterLab start up is successful. This handles cases where a Noteburst worker restarts, but the JupyterLab pod did not shut down and thus is "orphaned."
+
+- Each JupyterLab worker runs a "keep alive" function that exercises the JupyterLab pod's Python kernel. This is meant to counter the "culler" that deletes dormant JupyterLab pods in the Rubin Science Platform. Currently the keep alive function runs every 30 seconds.
+
+- The default arq job execution timeout is now configurable with the ``NOTEBURST_WORKER_JOB_TIMEOUT`` environment variable. By default it is 300 seconds (5 minutes).
+
 0.2.0 (2022-03-14)
 ==================
 
diff --git a/requirements/dev.txt b/requirements/dev.txt
index 88c6444..d974239 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -8,9 +8,9 @@ alabaster==0.7.12 \
     --hash=sha256:446438bdcca0e05bd45ea2de1668c1d9b032e1a9154c2c259092d77031ddd359 \
     --hash=sha256:a661d72d58e6ea8a57f7a86e37d86716863ee5e92788398526d58b26a4e4dc02
     # via sphinx
-anyio==3.5.0 \
-    --hash=sha256:a0aeffe2fb1fdf374a8e4b471444f0f3ac4fb9f5a5b542b48824475e0042a5a6 \
-    --hash=sha256:b5fa16c5ff93fa1046f2eeb5bbff2dad4d3514d6cda61d02816dba34fa8c3c2e
+anyio==3.6.1 \
+    --hash=sha256:413adf95f93886e442aea925f3ee43baa5a765a64a0f52c6081894f9992fdd0b \
+    --hash=sha256:cb29b9c70620506a9a8f87a309591713446953302d7d995344d0d7c6c0c9a7be
     # via
     #   -c requirements/main.txt
     #   httpcore
@@ -19,9 +19,9 @@ asgi-lifespan==1.0.1 \
     --hash=sha256:9a33e7da2073c4764bc79bd6136501d6c42f60e3d2168ba71235e84122eadb7f \
     --hash=sha256:9ea969dc5eb5cf08e52c08dce6f61afcadd28112e72d81c972b1d8eb8691ab53
     # via -r requirements/dev.in
-asgiref==3.5.0 \
-    --hash=sha256:2f8abc20f7248433085eda803936d98992f1343ddb022065779f37c5da0181d0 \
-    --hash=sha256:88d59c13d634dcffe0510be048210188edd79aeccb6a6c9028cdad6f31d730a9
+asgiref==3.5.2 \
+    --hash=sha256:1d2880b792ae8757289136f1db2b7b99100ce959b2aa57fd69dab783d05afac4 \
+    --hash=sha256:4a29362a6acebe09bf1d6640db38c1dc3d9217c68e6f9f6204d72667fc19a424
     # via
     #   -c requirements/main.txt
     #   uvicorn
@@ -31,13 +31,13 @@ attrs==21.4.0 \
     # via
     #   -c requirements/main.txt
     #   pytest
-babel==2.9.1 \
-    --hash=sha256:ab49e12b91d937cd11f0b67cb259a57ab4ad2b59ac7a3b41d6c06c0ac5b0def9 \
-    --hash=sha256:bc0c176f9f6a994582230df350aa6e05ba2ebe4b3ac317eab29d9be5d2768da0
+babel==2.10.1 \
+    --hash=sha256:3f349e85ad3154559ac4930c3918247d319f21910d5ce4b25d439ed8693b98d2 \
+    --hash=sha256:98aeaca086133efb3e1e2aad0396987490c8425929ddbcfe0550184fdc54cd13
     # via sphinx
-certifi==2021.10.8 \
-    --hash=sha256:78884e7c1d4b00ce3cea67b44566851c4343c120abd683433ce934a68ea58872 \
-    --hash=sha256:d62a0163eb4c2344ac042ab2bdf75399a71a2d8c7d47eac2e2ee91b9d6339569
+certifi==2022.5.18.1 \
+    --hash=sha256:9c5705e395cd70084351dd8ad5c41e65655e08ce46f2ec9cf6c2c08390f71eb7 \
+    --hash=sha256:f1d53542ee8cbedbe2118b5686372fb33c297fcd6379b050cca0ef13a597382a
     # via
     #   -c requirements/main.txt
     #   httpcore
@@ -50,60 +50,57 @@ cfgv==3.3.1 \
 charset-normalizer==2.0.12 \
     --hash=sha256:2857e29ff0d34db842cd7ca3230549d1a697f96ee6d3fb071cfa6c7393832597 \
     --hash=sha256:6881edbebdb17b39b4eaaa821b438bf6eddffb4468cf344f09f89def34a8b1df
-    # via
-    #   -c requirements/main.txt
-    #   httpx
-    #   requests
-click==8.0.4 \
-    --hash=sha256:6a7a62563bbfabfda3a38f3023a1db4a35978c0abd76f6c9605ecd6554d6d9b1 \
-    --hash=sha256:8458d7b1287c5fb128c90e23381cf99dcde74beaf6c7ff6384ce84d6fe090adb
+    # via requests
+click==8.1.3 \
+    --hash=sha256:7682dc8afb30297001674575ea00d1814d808d6a36af415a82bd481d37ba7b8e \
+    --hash=sha256:bb4d8133cb15a609f44e8213d9b391b0809795062913b383c62be0ee95b1db48
     # via
     #   -c requirements/main.txt
     #   documenteer
     #   sphinx-click
     #   uvicorn
-coverage[toml]==6.3.2 \
-    --hash=sha256:03e2a7826086b91ef345ff18742ee9fc47a6839ccd517061ef8fa1976e652ce9 \
-    --hash=sha256:07e6db90cd9686c767dcc593dff16c8c09f9814f5e9c51034066cad3373b914d \
-    --hash=sha256:18d520c6860515a771708937d2f78f63cc47ab3b80cb78e86573b0a760161faf \
-    --hash=sha256:1ebf730d2381158ecf3dfd4453fbca0613e16eaa547b4170e2450c9707665ce7 \
-    --hash=sha256:21b7745788866028adeb1e0eca3bf1101109e2dc58456cb49d2d9b99a8c516e6 \
-    --hash=sha256:26e2deacd414fc2f97dd9f7676ee3eaecd299ca751412d89f40bc01557a6b1b4 \
-    --hash=sha256:2c6dbb42f3ad25760010c45191e9757e7dce981cbfb90e42feef301d71540059 \
-    --hash=sha256:2fea046bfb455510e05be95e879f0e768d45c10c11509e20e06d8fcaa31d9e39 \
-    --hash=sha256:34626a7eee2a3da12af0507780bb51eb52dca0e1751fd1471d0810539cefb536 \
-    --hash=sha256:37d1141ad6b2466a7b53a22e08fe76994c2d35a5b6b469590424a9953155afac \
-    --hash=sha256:46191097ebc381fbf89bdce207a6c107ac4ec0890d8d20f3360345ff5976155c \
-    --hash=sha256:4dd8bafa458b5c7d061540f1ee9f18025a68e2d8471b3e858a9dad47c8d41903 \
-    --hash=sha256:4e21876082ed887baed0146fe222f861b5815455ada3b33b890f4105d806128d \
-    --hash=sha256:58303469e9a272b4abdb9e302a780072c0633cdcc0165db7eec0f9e32f901e05 \
-    --hash=sha256:5ca5aeb4344b30d0bec47481536b8ba1181d50dbe783b0e4ad03c95dc1296684 \
-    --hash=sha256:68353fe7cdf91f109fc7d474461b46e7f1f14e533e911a2a2cbb8b0fc8613cf1 \
-    --hash=sha256:6f89d05e028d274ce4fa1a86887b071ae1755082ef94a6740238cd7a8178804f \
-    --hash=sha256:7a15dc0a14008f1da3d1ebd44bdda3e357dbabdf5a0b5034d38fcde0b5c234b7 \
-    --hash=sha256:8bdde1177f2311ee552f47ae6e5aa7750c0e3291ca6b75f71f7ffe1f1dab3dca \
-    --hash=sha256:8ce257cac556cb03be4a248d92ed36904a59a4a5ff55a994e92214cde15c5bad \
-    --hash=sha256:8cf5cfcb1521dc3255d845d9dca3ff204b3229401994ef8d1984b32746bb45ca \
-    --hash=sha256:8fbbdc8d55990eac1b0919ca69eb5a988a802b854488c34b8f37f3e2025fa90d \
-    --hash=sha256:9548f10d8be799551eb3a9c74bbf2b4934ddb330e08a73320123c07f95cc2d92 \
-    --hash=sha256:96f8a1cb43ca1422f36492bebe63312d396491a9165ed3b9231e778d43a7fca4 \
-    --hash=sha256:9b27d894748475fa858f9597c0ee1d4829f44683f3813633aaf94b19cb5453cf \
-    --hash=sha256:9baff2a45ae1f17c8078452e9e5962e518eab705e50a0aa8083733ea7d45f3a6 \
-    --hash=sha256:a2a8b8bcc399edb4347a5ca8b9b87e7524c0967b335fbb08a83c8421489ddee1 \
-    --hash=sha256:acf53bc2cf7282ab9b8ba346746afe703474004d9e566ad164c91a7a59f188a4 \
-    --hash=sha256:b0be84e5a6209858a1d3e8d1806c46214e867ce1b0fd32e4ea03f4bd8b2e3359 \
-    --hash=sha256:b31651d018b23ec463e95cf10070d0b2c548aa950a03d0b559eaa11c7e5a6fa3 \
-    --hash=sha256:b78e5afb39941572209f71866aa0b206c12f0109835aa0d601e41552f9b3e620 \
-    --hash=sha256:c76aeef1b95aff3905fb2ae2d96e319caca5b76fa41d3470b19d4e4a3a313512 \
-    --hash=sha256:dd035edafefee4d573140a76fdc785dc38829fe5a455c4bb12bac8c20cfc3d69 \
-    --hash=sha256:dd6fe30bd519694b356cbfcaca9bd5c1737cddd20778c6a581ae20dc8c04def2 \
-    --hash=sha256:e5f4e1edcf57ce94e5475fe09e5afa3e3145081318e5fd1a43a6b4539a97e518 \
-    --hash=sha256:ec6bc7fe73a938933d4178c9b23c4e0568e43e220aef9472c4f6044bfc6dd0f0 \
-    --hash=sha256:f1555ea6d6da108e1999b2463ea1003fe03f29213e459145e70edbaf3e004aaa \
-    --hash=sha256:f5fa5803f47e095d7ad8443d28b01d48c0359484fec1b9d8606d0e3282084bc4 \
-    --hash=sha256:f7331dbf301b7289013175087636bbaf5b2405e57259dd2c42fdcc9fcc47325e \
-    --hash=sha256:f9987b0354b06d4df0f4d3e0ec1ae76d7ce7cbca9a2f98c25041eb79eec766f1 \
-    --hash=sha256:fd9e830e9d8d89b20ab1e5af09b32d33e1a08ef4c4e14411e559556fd788e6b2
+coverage[toml]==6.4 \
+    --hash=sha256:00c8544510f3c98476bbd58201ac2b150ffbcce46a8c3e4fb89ebf01998f806a \
+    --hash=sha256:016d7f5cf1c8c84f533a3c1f8f36126fbe00b2ec0ccca47cc5731c3723d327c6 \
+    --hash=sha256:03014a74023abaf5a591eeeaf1ac66a73d54eba178ff4cb1fa0c0a44aae70383 \
+    --hash=sha256:033ebec282793bd9eb988d0271c211e58442c31077976c19c442e24d827d356f \
+    --hash=sha256:21e6686a95025927775ac501e74f5940cdf6fe052292f3a3f7349b0abae6d00f \
+    --hash=sha256:26f8f92699756cb7af2b30720de0c5bb8d028e923a95b6d0c891088025a1ac8f \
+    --hash=sha256:2e76bd16f0e31bc2b07e0fb1379551fcd40daf8cdf7e24f31a29e442878a827c \
+    --hash=sha256:341e9c2008c481c5c72d0e0dbf64980a4b2238631a7f9780b0fe2e95755fb018 \
+    --hash=sha256:3cfd07c5889ddb96a401449109a8b97a165be9d67077df6802f59708bfb07720 \
+    --hash=sha256:4002f9e8c1f286e986fe96ec58742b93484195defc01d5cc7809b8f7acb5ece3 \
+    --hash=sha256:50ed480b798febce113709846b11f5d5ed1e529c88d8ae92f707806c50297abf \
+    --hash=sha256:543e172ce4c0de533fa892034cce260467b213c0ea8e39da2f65f9a477425211 \
+    --hash=sha256:5a78cf2c43b13aa6b56003707c5203f28585944c277c1f3f109c7b041b16bd39 \
+    --hash=sha256:5cd698341626f3c77784858427bad0cdd54a713115b423d22ac83a28303d1d95 \
+    --hash=sha256:60c2147921da7f4d2d04f570e1838db32b95c5509d248f3fe6417e91437eaf41 \
+    --hash=sha256:62d382f7d77eeeaff14b30516b17bcbe80f645f5cf02bb755baac376591c653c \
+    --hash=sha256:69432946f154c6add0e9ede03cc43b96e2ef2733110a77444823c053b1ff5166 \
+    --hash=sha256:727dafd7f67a6e1cad808dc884bd9c5a2f6ef1f8f6d2f22b37b96cb0080d4f49 \
+    --hash=sha256:742fb8b43835078dd7496c3c25a1ec8d15351df49fb0037bffb4754291ef30ce \
+    --hash=sha256:750e13834b597eeb8ae6e72aa58d1d831b96beec5ad1d04479ae3772373a8088 \
+    --hash=sha256:7b546cf2b1974ddc2cb222a109b37c6ed1778b9be7e6b0c0bc0cf0438d9e45a6 \
+    --hash=sha256:83bd142cdec5e4a5c4ca1d4ff6fa807d28460f9db919f9f6a31babaaa8b88426 \
+    --hash=sha256:8d2e80dd3438e93b19e1223a9850fa65425e77f2607a364b6fd134fcd52dc9df \
+    --hash=sha256:9229d074e097f21dfe0643d9d0140ee7433814b3f0fc3706b4abffd1e3038632 \
+    --hash=sha256:968ed5407f9460bd5a591cefd1388cc00a8f5099de9e76234655ae48cfdbe2c3 \
+    --hash=sha256:9c82f2cd69c71698152e943f4a5a6b83a3ab1db73b88f6e769fabc86074c3b08 \
+    --hash=sha256:a00441f5ea4504f5abbc047589d09e0dc33eb447dc45a1a527c8b74bfdd32c65 \
+    --hash=sha256:a022394996419142b33a0cf7274cb444c01d2bb123727c4bb0b9acabcb515dea \
+    --hash=sha256:af5b9ee0fc146e907aa0f5fb858c3b3da9199d78b7bb2c9973d95550bd40f701 \
+    --hash=sha256:b5578efe4038be02d76c344007b13119b2b20acd009a88dde8adec2de4f630b5 \
+    --hash=sha256:b84ab65444dcc68d761e95d4d70f3cfd347ceca5a029f2ffec37d4f124f61311 \
+    --hash=sha256:c53ad261dfc8695062fc8811ac7c162bd6096a05a19f26097f411bdf5747aee7 \
+    --hash=sha256:cc173f1ce9ffb16b299f51c9ce53f66a62f4d975abe5640e976904066f3c835d \
+    --hash=sha256:d548edacbf16a8276af13063a2b0669d58bbcfca7c55a255f84aac2870786a61 \
+    --hash=sha256:d55fae115ef9f67934e9f1103c9ba826b4c690e4c5bcf94482b8b2398311bf9c \
+    --hash=sha256:d8099ea680201c2221f8468c372198ceba9338a5fec0e940111962b03b3f716a \
+    --hash=sha256:e35217031e4b534b09f9b9a5841b9344a30a6357627761d4218818b865d45055 \
+    --hash=sha256:e4f52c272fdc82e7c65ff3f17a7179bc5f710ebc8ce8a5cadac81215e8326740 \
+    --hash=sha256:e637ae0b7b481905358624ef2e81d7fb0b1af55f5ff99f9ba05442a444b11e45 \
+    --hash=sha256:eef5292b60b6de753d6e7f2d128d5841c7915fb1e3321c3a1fe6acfe76c38052 \
+    --hash=sha256:fb45fe08e1abc64eb836d187b20a59172053999823f7f6ef4f18a819c44ba16f
     # via
     #   -r requirements/dev.in
     #   pytest-cov
@@ -111,9 +108,9 @@ distlib==0.3.4 \
     --hash=sha256:6564fe0a8f51e734df6333d08b8b94d4ea8ee6b99b5ed50613f731fd4089f34b \
     --hash=sha256:e4b58818180336dc9c529bfb9a0b58728ffc09ad92027a3f30b7cd91e3458579
     # via virtualenv
-documenteer==0.6.10 \
-    --hash=sha256:2c6e1011a0de304432200cb5cbf6eefe59d3f52ec164701b6dbb18628c192aa9 \
-    --hash=sha256:7c910c0070a1deef36a924d92e0a0f1fcfe737453622a4b715ce824881d0f789
+documenteer==0.6.11 \
+    --hash=sha256:4be7aeb58b4799d968cce122b1efa8f18f1eee56464eab5ef166a16d598754bc \
+    --hash=sha256:d6534289b276be0e37283fd9844a36a5ca95decf8678de94835bf74ce21af36e
     # via -r requirements/dev.in
 docutils==0.17.1 \
     --hash=sha256:686577d2e4c32380bb50cbb22f575ed742d58168cee37e99117a854bcd88f125 \
@@ -123,9 +120,9 @@ docutils==0.17.1 \
     #   sphinx
     #   sphinx-click
     #   sphinxcontrib-bibtex
-filelock==3.6.0 \
-    --hash=sha256:9cd540a9352e432c7246a48fe4e8712b10acb1df2ad1f30e8c070b82ae1fed85 \
-    --hash=sha256:f8314284bfffbdcfa0ff3d7992b023d4c628ced6feb957351d4c48d059f56bc0
+filelock==3.7.0 \
+    --hash=sha256:b795f1b42a61bbf8ec7113c341dad679d772567b936fbd1bf43c9a238e673e20 \
+    --hash=sha256:c7b5fdb219b398a5b28c8e4c1893ef5f98ece6a38c6ab2c22e26ec161556fed6
     # via virtualenv
 gitdb==4.0.9 \
     --hash=sha256:8033ad4e853066ba6ca92050b9df2f89301b8fc8bf7e9324d412a63f8bf1a8fd \
@@ -142,9 +139,9 @@ h11==0.12.0 \
     #   -c requirements/main.txt
     #   httpcore
     #   uvicorn
-httpcore==0.14.7 \
-    --hash=sha256:47d772f754359e56dd9d892d9593b6f9870a37aeb8ba51e9a88b09b3d68cfade \
-    --hash=sha256:7503ec1c0f559066e7e39bc4003fd2ce023d01cf51793e3c173b864eb456ead1
+httpcore==0.15.0 \
+    --hash=sha256:1105b8b73c025f23ff7c36468e4432226cbb959176eab66864b8e31c4ee27fa6 \
+    --hash=sha256:18b68ab86a3ccf3e7dc0f43598eaddcf472b602aba29f9aa6ab85fe2ada3980b
     # via
     #   -c requirements/main.txt
     #   httpx
@@ -186,16 +183,16 @@ httptools==0.4.0 \
     # via
     #   -c requirements/main.txt
     #   uvicorn
-httpx==0.22.0 \
-    --hash=sha256:d8e778f76d9bbd46af49e7f062467e3157a5a3d2ae4876a4bbfd8a51ed9c9cb4 \
-    --hash=sha256:e35e83d1d2b9b2a609ef367cc4c1e66fd80b750348b20cc9e19d1952fc2ca3f6
+httpx==0.23.0 \
+    --hash=sha256:42974f577483e1e932c3cdc3cd2303e883cbfba17fe228b0f63589764d7b9c4b \
+    --hash=sha256:f28eac771ec9eb4866d3fb4ab65abd42d38c424739e80c08d8d20570de60b0ef
     # via
     #   -c requirements/main.txt
     #   -r requirements/dev.in
     #   respx
-identify==2.4.12 \
-    --hash=sha256:3f3244a559290e7d3deb9e9adc7b33594c1bc85a9dd82e0f1be519bf12a1ec17 \
-    --hash=sha256:5f06b14366bd1facb88b00540a1de05b69b310cbc2654db3c7e07fa3a4339323
+identify==2.5.1 \
+    --hash=sha256:0dca2ea3e4381c435ef9c33ba100a78a9b40c0bab11189c7cf121f75815efeaa \
+    --hash=sha256:3d11b16f3fe19f52039fb7e39c9c884b21cb1b586988114fbe42671f03de3e82
     # via pre-commit
 idna==3.3 \
     --hash=sha256:84d9dd047ffa80596e0f246e2eab0b391788b0503584e8945f2368256d2735ff \
@@ -213,9 +210,9 @@ iniconfig==1.1.1 \
     --hash=sha256:011e24c64b7f47f6ebd835bb12a743f2fbe9a26d4cecaa7f53bc4f35ee9da8b3 \
     --hash=sha256:bc3af051d7d14b2ee5ef9969666def0cd1a000e121eaea580d4a313df4b37f32
     # via pytest
-jinja2==3.1.1 \
-    --hash=sha256:539835f51a74a69f41b848a9645dbdc35b4f20a3b601e2d9a7e22947b15ff119 \
-    --hash=sha256:640bed4bb501cbd17194b3cace1dc2126f5b619cf068a726b98192a0fde74ae9
+jinja2==3.1.2 \
+    --hash=sha256:31351a702a408a9e7595a8fc6150fc3f43bb6bf7e319770cbc0db9df9437e852 \
+    --hash=sha256:6088930bfe239f0e6710546ab9c19c9ef35e29792895fed6e6e31a023a182a61
     # via sphinx
 latexcodec==2.0.1 \
     --hash=sha256:2aa2551c373261cefe2ad3a8953a6d6533e68238d180eb4bb91d7964adb3fe9a \
@@ -266,30 +263,30 @@ markupsafe==2.1.1 \
     --hash=sha256:f121a1420d4e173a5d96e47e9a0c0dcff965afdf1626d28de1460815f7c4ee7a \
     --hash=sha256:fc7b548b17d238737688817ab67deebb30e8073c95749d55538ed473130ec0c7
     # via jinja2
-mypy==0.942 \
-    --hash=sha256:0e2dd88410937423fba18e57147dd07cd8381291b93d5b1984626f173a26543e \
-    --hash=sha256:10daab80bc40f84e3f087d896cdb53dc811a9f04eae4b3f95779c26edee89d16 \
-    --hash=sha256:17e44649fec92e9f82102b48a3bf7b4a5510ad0cd22fa21a104826b5db4903e2 \
-    --hash=sha256:1a0459c333f00e6a11cbf6b468b870c2b99a906cb72d6eadf3d1d95d38c9352c \
-    --hash=sha256:246e1aa127d5b78488a4a0594bd95f6d6fb9d63cf08a66dafbff8595d8891f67 \
-    --hash=sha256:2b184db8c618c43c3a31b32ff00cd28195d39e9c24e7c3b401f3db7f6e5767f5 \
-    --hash=sha256:2bc249409a7168d37c658e062e1ab5173300984a2dada2589638568ddc1db02b \
-    --hash=sha256:3841b5433ff936bff2f4dc8d54cf2cdbfea5d8e88cedfac45c161368e5770ba6 \
-    --hash=sha256:4c3e497588afccfa4334a9986b56f703e75793133c4be3a02d06a3df16b67a58 \
-    --hash=sha256:5bf44840fb43ac4074636fd47ee476d73f0039f4f54e86d7265077dc199be24d \
-    --hash=sha256:64235137edc16bee6f095aba73be5334677d6f6bdb7fa03cfab90164fa294a17 \
-    --hash=sha256:6776e5fa22381cc761df53e7496a805801c1a751b27b99a9ff2f0ca848c7eca0 \
-    --hash=sha256:6ce34a118d1a898f47def970a2042b8af6bdcc01546454726c7dd2171aa6dfca \
-    --hash=sha256:6f6ad963172152e112b87cc7ec103ba0f2db2f1cd8997237827c052a3903eaa6 \
-    --hash=sha256:6f7106cbf9cc2f403693bf50ed7c9fa5bb3dfa9007b240db3c910929abe2a322 \
-    --hash=sha256:7742d2c4e46bb5017b51c810283a6a389296cda03df805a4f7869a6f41246534 \
-    --hash=sha256:9521c1265ccaaa1791d2c13582f06facf815f426cd8b07c3a485f486a8ffc1f3 \
-    --hash=sha256:a1b383fe99678d7402754fe90448d4037f9512ce70c21f8aee3b8bf48ffc51db \
-    --hash=sha256:b840cfe89c4ab6386c40300689cd8645fc8d2d5f20101c7f8bd23d15fca14904 \
-    --hash=sha256:d8d3ba77e56b84cd47a8ee45b62c84b6d80d32383928fe2548c9a124ea0a725c \
-    --hash=sha256:dcd955f36e0180258a96f880348fbca54ce092b40fbb4b37372ae3b25a0b0a46 \
-    --hash=sha256:e865fec858d75b78b4d63266c9aff770ecb6a39dfb6d6b56c47f7f8aba6baba8 \
-    --hash=sha256:edf7237137a1a9330046dbb14796963d734dd740a98d5e144a3eb1d267f5f9ee
+mypy==0.950 \
+    --hash=sha256:0112752a6ff07230f9ec2f71b0d3d4e088a910fdce454fdb6553e83ed0eced7d \
+    --hash=sha256:0384d9f3af49837baa92f559d3fa673e6d2652a16550a9ee07fc08c736f5e6f8 \
+    --hash=sha256:1b333cfbca1762ff15808a0ef4f71b5d3eed8528b23ea1c3fb50543c867d68de \
+    --hash=sha256:1fdeb0a0f64f2a874a4c1f5271f06e40e1e9779bf55f9567f149466fc7a55038 \
+    --hash=sha256:4c653e4846f287051599ed8f4b3c044b80e540e88feec76b11044ddc5612ffed \
+    --hash=sha256:563514c7dc504698fb66bb1cf897657a173a496406f1866afae73ab5b3cdb334 \
+    --hash=sha256:5b231afd6a6e951381b9ef09a1223b1feabe13625388db48a8690f8daa9b71ff \
+    --hash=sha256:5ce6a09042b6da16d773d2110e44f169683d8cc8687e79ec6d1181a72cb028d2 \
+    --hash=sha256:5e7647df0f8fc947388e6251d728189cfadb3b1e558407f93254e35abc026e22 \
+    --hash=sha256:6003de687c13196e8a1243a5e4bcce617d79b88f83ee6625437e335d89dfebe2 \
+    --hash=sha256:61504b9a5ae166ba5ecfed9e93357fd51aa693d3d434b582a925338a2ff57fd2 \
+    --hash=sha256:77423570c04aca807508a492037abbd72b12a1fb25a385847d191cd50b2c9605 \
+    --hash=sha256:a4d9898f46446bfb6405383b57b96737dcfd0a7f25b748e78ef3e8c576bba3cb \
+    --hash=sha256:a952b8bc0ae278fc6316e6384f67bb9a396eb30aced6ad034d3a76120ebcc519 \
+    --hash=sha256:b5b5bd0ffb11b4aba2bb6d31b8643902c48f990cc92fda4e21afac658044f0c0 \
+    --hash=sha256:ca75ecf2783395ca3016a5e455cb322ba26b6d33b4b413fcdedfc632e67941dc \
+    --hash=sha256:cf9c261958a769a3bd38c3e133801ebcd284ffb734ea12d01457cb09eacf7d7b \
+    --hash=sha256:dd4d670eee9610bf61c25c940e9ade2d0ed05eb44227275cce88701fee014b1f \
+    --hash=sha256:e19736af56947addedce4674c0971e5dceef1b5ec7d667fe86bcd2b07f8f9075 \
+    --hash=sha256:eaea21d150fb26d7b4856766e7addcf929119dd19fc832b22e71d942835201ef \
+    --hash=sha256:eaff8156016487c1af5ffa5304c3e3fd183edcb412f3e9c72db349faf3f6e0eb \
+    --hash=sha256:ee0a36edd332ed2c5208565ae6e3a7afc0eabb53f5327e281f2ef03a6bc7687a \
+    --hash=sha256:ef7beb2a3582eb7a9f37beaf38a28acfd801988cde688760aea9e6cc4832b10b
     # via -r requirements/dev.in
 mypy-extensions==0.4.3 \
     --hash=sha256:090fedd75945a69ae91ce1303b5824f428daf5a028d2f6ab8a299250a846f15d \
@@ -305,17 +302,17 @@ packaging==21.3 \
     # via
     #   pytest
     #   sphinx
-platformdirs==2.5.1 \
-    --hash=sha256:7535e70dfa32e84d4b34996ea99c5e432fa29a708d0f4e394bbcb2a8faa4f16d \
-    --hash=sha256:bcae7cab893c2d310a711b70b24efb93334febe65f8de776ee320b517471e227
+platformdirs==2.5.2 \
+    --hash=sha256:027d8e83a2d7de06bbac4e5ef7e023c02b863d7ea5d079477e722bb41ab25788 \
+    --hash=sha256:58c8abb07dcb441e6ee4b11d8df0ac856038f944ab98b7be6b27b2a3c7feef19
     # via virtualenv
 pluggy==1.0.0 \
     --hash=sha256:4224373bacce55f955a878bf9cfa763c1e360858e330072059e10bad68531159 \
     --hash=sha256:74134bbf457f031a36d68416e1509f34bd5ccc019f0bcc952c7b909d06b37bd3
     # via pytest
-pre-commit==2.17.0 \
-    --hash=sha256:725fa7459782d7bec5ead072810e47351de01709be838c2ce1726b9591dad616 \
-    --hash=sha256:c1a8040ff15ad3d648c70cc3e55b93e4d2d5b687320955505587fd79bbaed06a
+pre-commit==2.19.0 \
+    --hash=sha256:10c62741aa5704faea2ad69cb550ca78082efe5697d6f04e5710c3c229afdd10 \
+    --hash=sha256:4233a1e38621c87d9dda9808c6606d7e7ba0e087cd56d3fe03202a01d2919615
     # via -r requirements/dev.in
 py==1.11.0 \
     --hash=sha256:51c75c4126074b472f746a24399ad32f6053d1b34b68d2fa41e558e6f4a98719 \
@@ -331,22 +328,23 @@ pybtex-docutils==1.0.1 \
     --hash=sha256:42e379bd1d5473b9fd7be4b3a64ca291d4fdc9ae6c6854e52d1d0157c955bbfa \
     --hash=sha256:d53aa0c31dc94d61fd30ea3f06c749e6f510f9ff0e78cb2765a9300f173d8626
     # via sphinxcontrib-bibtex
-pygments==2.11.2 \
-    --hash=sha256:44238f1b60a76d78fc8ca0528ee429702aae011c265fe6a8dd8b63049ae41c65 \
-    --hash=sha256:4e426f72023d88d03b2fa258de560726ce890ff3b630f88c21cbb8b2503b8c6a
+pygments==2.12.0 \
+    --hash=sha256:5eb116118f9612ff1ee89ac96437bb6b49e8f04d8a13b514ba26f620208e26eb \
+    --hash=sha256:dc9c10fb40944260f6ed4c688ece0cd2048414940f1cea51b8b226318411c519
     # via sphinx
-pyparsing==3.0.7 \
-    --hash=sha256:18ee9022775d270c55187733956460083db60b37d0d0fb357445f3094eed3eea \
-    --hash=sha256:a6c06a88f252e6c322f65faf8f418b16213b51bdfaece0524c1c1bc30c63c484
+pyparsing==3.0.9 \
+    --hash=sha256:2b020ecf7d21b687f219b71ecad3631f644a47f01403fa1d1036b0c6416d70fb \
+    --hash=sha256:5026bae9a10eeaefb61dab2f09052b9f4307d44aee4eda64b309723d8d206bbc
     # via packaging
-pytest==7.1.1 \
-    --hash=sha256:841132caef6b1ad17a9afde46dc4f6cfa59a05f9555aae5151f73bdf2820ca63 \
-    --hash=sha256:92f723789a8fdd7180b6b06483874feca4c48a5c76968e03bb3e7f806a1869ea
+pytest==7.1.2 \
+    --hash=sha256:13d0e3ccfc2b6e26be000cb6568c832ba67ba32e719443bfe725814d3c42433c \
+    --hash=sha256:a06a0425453864a270bc45e71f783330a7428defb4230fb5e6a731fde06ecd45
     # via
     #   -r requirements/dev.in
     #   pytest-asyncio
     #   pytest-cov
 pytest-asyncio==0.18.3 \
+    --hash=sha256:16cf40bdf2b4fb7fc8e4b82bd05ce3fbcd454cbf7b92afc445fe299dabb88213 \
     --hash=sha256:7659bdb0a9eb9c6e3ef992eef11a2b3e69697800ad02fb06374a210d85b29f91 \
     --hash=sha256:8fafa6c52161addfd41ee7ab35f11836c5a16ec208f93ee388f752bea3493a84
     # via -r requirements/dev.in
@@ -456,17 +454,17 @@ sphinx-automodapi==0.14.1 \
     --hash=sha256:4238e131d7abc47226449661bb3cfa2bb1b5b190184ffa69d9b924b984a22753 \
     --hash=sha256:a2f9c0f9e2901875e6db75df6c01412875eb15f25e7db1206e1b69fedf75bbc9
     # via -r requirements/dev.in
-sphinx-click==3.1.0 \
-    --hash=sha256:36dbf271b1d2600fb05bd598ddeed0b6b6acf35beaf8bc9d507ba7716b232b0e \
-    --hash=sha256:8fb0b048a577d346d741782e44d041d7e908922858273d99746f305870116121
+sphinx-click==4.0.3 \
+    --hash=sha256:4c4b43386ff6304e47ae0467da9c980786eb3c1317cd6f488524c18931627c04 \
+    --hash=sha256:a1aacf00cfe11550a2211014617c426a94af8638f1ce735b5d9998cccf1a1edb
     # via -r requirements/dev.in
 sphinxcontrib-applehelp==1.0.2 \
     --hash=sha256:806111e5e962be97c29ec4c1e7fe277bfd19e9652fb1a4392105b43e01af885a \
     --hash=sha256:a072735ec80e7675e3f432fcae8610ecf509c5f1869d17e2eecff44389cdbc58
     # via sphinx
-sphinxcontrib-bibtex==2.4.1 \
-    --hash=sha256:282223309bbaf34cd20a8fe1ba346fe8642f403a8930607e77a8cb08ae81fc5f \
-    --hash=sha256:b7da94e960a855c07c6816c7b0f4e8619b5b3ada00a5cb99b1eaa847a788f779
+sphinxcontrib-bibtex==2.4.2 \
+    --hash=sha256:608512afde6b732148cdc9123550bd560bf48e071d1fb7bb1bab4f4437ff04f4 \
+    --hash=sha256:65b023ee47f35f1f03ac4d71c824e67c624c7ecac1bb26e83623271a01f9da86
     # via documenteer
 sphinxcontrib-devhelp==1.0.2 \
     --hash=sha256:8165223f9a335cc1af7ffe1ed31d2871f325254c0423bc0c4c7cd1c1e4734a2e \
@@ -499,13 +497,13 @@ tomli==2.0.1 \
     #   coverage
     #   mypy
     #   pytest
-types-pyyaml==6.0.5 \
-    --hash=sha256:2fd21310870addfd51db621ad9f3b373f33ee3cbb81681d70ef578760bd22d35 \
-    --hash=sha256:464e050914f3d1d83a8c038e1cf46da5cb96b7cd02eaa096bcaa03675edd8a2e
+types-pyyaml==6.0.7 \
+    --hash=sha256:59480cf44595d836aaae050f35e3c39f197f3a833679ef3978d97aa9f2fb7def \
+    --hash=sha256:7b273a34f32af9910cf9405728c9d2ad3afc4be63e4048091a1a73d76681fe67
     # via -r requirements/dev.in
-typing-extensions==4.1.1 \
-    --hash=sha256:1a9462dcc3347a79b1f1c0271fbe79e844580bb598bafa1ed208b94da3cdcd42 \
-    --hash=sha256:21c85e0fe4b9a155d0799430b0ad741cdce7e359660ccbd8b530613e8df88ce2
+typing-extensions==4.2.0 \
+    --hash=sha256:6657594ee297170d19f67d55c05852a874e7eb634f4f753dbd667855e07c1708 \
+    --hash=sha256:f1c24655a0da0d1b67f07e17a5e6b2a105894e6824b92096378bb3668ef02376
     # via
     #   -c requirements/main.txt
     #   mypy
@@ -539,65 +537,65 @@ uvloop==0.16.0 \
     # via
     #   -c requirements/main.txt
     #   uvicorn
-virtualenv==20.14.0 \
-    --hash=sha256:1e8588f35e8b42c6ec6841a13c5e88239de1e6e4e4cedfd3916b306dc826ec66 \
-    --hash=sha256:8e5b402037287126e81ccde9432b95a8be5b19d36584f64957060a3488c11ca8
+virtualenv==20.14.1 \
+    --hash=sha256:e617f16e25b42eb4f6e74096b9c9e37713cf10bf30168fb4a739f3fa8f898a3a \
+    --hash=sha256:ef589a79795589aada0c1c5b319486797c03b67ac3984c48c669c0e4f50df3a5
     # via pre-commit
-watchgod==0.8.1 \
-    --hash=sha256:4ba20c2fa3e63df706ab50e694b9453b05395fadb7cbbfd984d71fb1547d485d \
-    --hash=sha256:c12d15f3df7d11e740704e45398277f75f1d78f46ad59ca9d7505bfd8b8d3086
+watchgod==0.8.2 \
+    --hash=sha256:2f3e8137d98f493ff58af54ea00f4d1433a6afe2ed08ab331a657df468c6bfce \
+    --hash=sha256:cb11ff66657befba94d828e3b622d5fb76f22fbda1376f355f3e6e51e97d9450
     # via
     #   -c requirements/main.txt
     #   uvicorn
-websockets==10.2 \
-    --hash=sha256:038afef2a05893578d10dadbdbb5f112bd115c46347e1efe99f6a356ff062138 \
-    --hash=sha256:05f6e9757017270e7a92a2975e2ae88a9a582ffc4629086fd6039aa80e99cd86 \
-    --hash=sha256:0b66421f9f13d4df60cd48ab977ed2c2b6c9147ae1a33caf5a9f46294422fda1 \
-    --hash=sha256:0cd02f36d37e503aca88ab23cc0a1a0e92a263d37acf6331521eb38040dcf77b \
-    --hash=sha256:0f73cb2526d6da268e86977b2c4b58f2195994e53070fe567d5487c6436047e6 \
-    --hash=sha256:117383d0a17a0dda349f7a8790763dde75c1508ff8e4d6e8328b898b7df48397 \
-    --hash=sha256:1c1f3b18c8162e3b09761d0c6a0305fd642934202541cc511ef972cb9463261e \
-    --hash=sha256:1c9031e90ebfc486e9cdad532b94004ade3aa39a31d3c46c105bb0b579cd2490 \
-    --hash=sha256:2349fa81b6b959484bb2bda556ccb9eb70ba68987646a0f8a537a1a18319fb03 \
-    --hash=sha256:24b879ba7db12bb525d4e58089fcbe6a3df3ce4666523183654170e86d372cbe \
-    --hash=sha256:2aa9b91347ecd0412683f28aabe27f6bad502d89bd363b76e0a3508b1596402e \
-    --hash=sha256:56d48eebe9e39ce0d68701bce3b21df923aa05dcc00f9fd8300de1df31a7c07c \
-    --hash=sha256:5a38a0175ae82e4a8c4bac29fc01b9ee26d7d5a614e5ee11e7813c68a7d938ce \
-    --hash=sha256:5b04270b5613f245ec84bb2c6a482a9d009aefad37c0575f6cda8499125d5d5c \
-    --hash=sha256:6193bbc1ee63aadeb9a4d81de0e19477401d150d506aee772d8380943f118186 \
-    --hash=sha256:669e54228a4d9457abafed27cbf0e2b9f401445c4dfefc12bf8e4db9751703b8 \
-    --hash=sha256:6a009eb551c46fd79737791c0c833fc0e5b56bcd1c3057498b262d660b92e9cd \
-    --hash=sha256:71a4491cfe7a9f18ee57d41163cb6a8a3fa591e0f0564ca8b0ed86b2a30cced4 \
-    --hash=sha256:7b38a5c9112e3dbbe45540f7b60c5204f49b3cb501b40950d6ab34cd202ab1d0 \
-    --hash=sha256:7bb9d8a6beca478c7e9bdde0159bd810cc1006ad6a7cb460533bae39da692ca2 \
-    --hash=sha256:82bc33db6d8309dc27a3bee11f7da2288ad925fcbabc2a4bb78f7e9c56249baf \
-    --hash=sha256:8351c3c86b08156337b0e4ece0e3c5ec3e01fcd14e8950996832a23c99416098 \
-    --hash=sha256:8beac786a388bb99a66c3be4ab0fb38273c0e3bc17f612a4e0a47c4fc8b9c045 \
-    --hash=sha256:97950c7c844ec6f8d292440953ae18b99e3a6a09885e09d20d5e7ecd9b914cf8 \
-    --hash=sha256:98f57b3120f8331cd7440dbe0e776474f5e3632fdaa474af1f6b754955a47d71 \
-    --hash=sha256:9ca2ca05a4c29179f06cf6727b45dba5d228da62623ec9df4184413d8aae6cb9 \
-    --hash=sha256:a03a25d95cc7400bd4d61a63460b5d85a7761c12075ee2f51de1ffe73aa593d3 \
-    --hash=sha256:a10c0c1ee02164246f90053273a42d72a3b2452a7e7486fdae781138cf7fbe2d \
-    --hash=sha256:a72b92f96e5e540d5dda99ee3346e199ade8df63152fa3c737260da1730c411f \
-    --hash=sha256:ac081aa0307f263d63c5ff0727935c736c8dad51ddf2dc9f5d0c4759842aefaa \
-    --hash=sha256:b22bdc795e62e71118b63e14a08bacfa4f262fd2877de7e5b950f5ac16b0348f \
-    --hash=sha256:b4059e2ccbe6587b6dc9a01db5fc49ead9a884faa4076eea96c5ec62cb32f42a \
-    --hash=sha256:b7fe45ae43ac814beb8ca09d6995b56800676f2cfa8e23f42839dc69bba34a42 \
-    --hash=sha256:bef03a51f9657fb03d8da6ccd233fe96e04101a852f0ffd35f5b725b28221ff3 \
-    --hash=sha256:bffc65442dd35c473ca9790a3fa3ba06396102a950794f536783f4b8060af8dd \
-    --hash=sha256:c21a67ab9a94bd53e10bba21912556027fea944648a09e6508415ad14e37c325 \
-    --hash=sha256:c67d9cacb3f6537ca21e9b224d4fd08481538e43bcac08b3d93181b0816def39 \
-    --hash=sha256:c6e56606842bb24e16e36ae7eb308d866b4249cf0be8f63b212f287eeb76b124 \
-    --hash=sha256:cb316b87cbe3c0791c2ad92a5a36bf6adc87c457654335810b25048c1daa6fd5 \
-    --hash=sha256:cef40a1b183dcf39d23b392e9dd1d9b07ab9c46aadf294fff1350fb79146e72b \
-    --hash=sha256:cf931c33db9c87c53d009856045dd524e4a378445693382a920fa1e0eb77c36c \
-    --hash=sha256:d4d110a84b63c5cfdd22485acc97b8b919aefeecd6300c0c9d551e055b9a88ea \
-    --hash=sha256:d5396710f86a306cf52f87fd8ea594a0e894ba0cc5a36059eaca3a477dc332aa \
-    --hash=sha256:f09f46b1ff6d09b01c7816c50bd1903cf7d02ebbdb63726132717c2fcda835d5 \
-    --hash=sha256:f14bd10e170abc01682a9f8b28b16e6f20acf6175945ef38db6ffe31b0c72c3f \
-    --hash=sha256:f5c335dc0e7dc271ef36df3f439868b3c790775f345338c2f61a562f1074187b \
-    --hash=sha256:f8296b8408ec6853b26771599990721a26403e62b9de7e50ac0a056772ac0b5e \
-    --hash=sha256:fa35c5d1830d0fb7b810324e9eeab9aa92e8f273f11fdbdc0741dcded6d72b9f
+websockets==10.3 \
+    --hash=sha256:07cdc0a5b2549bcfbadb585ad8471ebdc7bdf91e32e34ae3889001c1c106a6af \
+    --hash=sha256:210aad7fdd381c52e58777560860c7e6110b6174488ef1d4b681c08b68bf7f8c \
+    --hash=sha256:28dd20b938a57c3124028680dc1600c197294da5db4292c76a0b48efb3ed7f76 \
+    --hash=sha256:2f94fa3ae454a63ea3a19f73b95deeebc9f02ba2d5617ca16f0bbdae375cda47 \
+    --hash=sha256:31564a67c3e4005f27815634343df688b25705cccb22bc1db621c781ddc64c69 \
+    --hash=sha256:347974105bbd4ea068106ec65e8e8ebd86f28c19e529d115d89bd8cc5cda3079 \
+    --hash=sha256:379e03422178436af4f3abe0aa8f401aa77ae2487843738542a75faf44a31f0c \
+    --hash=sha256:3eda1cb7e9da1b22588cefff09f0951771d6ee9fa8dbe66f5ae04cc5f26b2b55 \
+    --hash=sha256:51695d3b199cd03098ae5b42833006a0f43dc5418d3102972addc593a783bc02 \
+    --hash=sha256:54c000abeaff6d8771a4e2cef40900919908ea7b6b6a30eae72752607c6db559 \
+    --hash=sha256:5b936bf552e4f6357f5727579072ff1e1324717902127ffe60c92d29b67b7be3 \
+    --hash=sha256:6075fd24df23133c1b078e08a9b04a3bc40b31a8def4ee0b9f2c8865acce913e \
+    --hash=sha256:661f641b44ed315556a2fa630239adfd77bd1b11cb0b9d96ed8ad90b0b1e4978 \
+    --hash=sha256:6ea6b300a6bdd782e49922d690e11c3669828fe36fc2471408c58b93b5535a98 \
+    --hash=sha256:6ed1d6f791eabfd9808afea1e068f5e59418e55721db8b7f3bfc39dc831c42ae \
+    --hash=sha256:7934e055fd5cd9dee60f11d16c8d79c4567315824bacb1246d0208a47eca9755 \
+    --hash=sha256:7ab36e17af592eec5747c68ef2722a74c1a4a70f3772bc661079baf4ae30e40d \
+    --hash=sha256:7f6d96fdb0975044fdd7953b35d003b03f9e2bcf85f2d2cf86285ece53e9f991 \
+    --hash=sha256:83e5ca0d5b743cde3d29fda74ccab37bdd0911f25bd4cdf09ff8b51b7b4f2fa1 \
+    --hash=sha256:85506b3328a9e083cc0a0fb3ba27e33c8db78341b3eb12eb72e8afd166c36680 \
+    --hash=sha256:8af75085b4bc0b5c40c4a3c0e113fa95e84c60f4ed6786cbb675aeb1ee128247 \
+    --hash=sha256:8b1359aba0ff810d5830d5ab8e2c4a02bebf98a60aa0124fb29aa78cfdb8031f \
+    --hash=sha256:8fbd7d77f8aba46d43245e86dd91a8970eac4fb74c473f8e30e9c07581f852b2 \
+    --hash=sha256:907e8247480f287aa9bbc9391bd6de23c906d48af54c8c421df84655eef66af7 \
+    --hash=sha256:93d5ea0b5da8d66d868b32c614d2b52d14304444e39e13a59566d4acb8d6e2e4 \
+    --hash=sha256:97bc9d41e69a7521a358f9b8e44871f6cdeb42af31815c17aed36372d4eec667 \
+    --hash=sha256:994cdb1942a7a4c2e10098d9162948c9e7b235df755de91ca33f6e0481366fdb \
+    --hash=sha256:a141de3d5a92188234afa61653ed0bbd2dde46ad47b15c3042ffb89548e77094 \
+    --hash=sha256:a1e15b230c3613e8ea82c9fc6941b2093e8eb939dd794c02754d33980ba81e36 \
+    --hash=sha256:aad5e300ab32036eb3fdc350ad30877210e2f51bceaca83fb7fef4d2b6c72b79 \
+    --hash=sha256:b529fdfa881b69fe563dbd98acce84f3e5a67df13de415e143ef053ff006d500 \
+    --hash=sha256:b9c77f0d1436ea4b4dc089ed8335fa141e6a251a92f75f675056dac4ab47a71e \
+    --hash=sha256:bb621ec2dbbbe8df78a27dbd9dd7919f9b7d32a73fafcb4d9252fc4637343582 \
+    --hash=sha256:c7250848ce69559756ad0086a37b82c986cd33c2d344ab87fea596c5ac6d9442 \
+    --hash=sha256:c8d1d14aa0f600b5be363077b621b1b4d1eb3fbf90af83f9281cda668e6ff7fd \
+    --hash=sha256:d1655a6fc7aecd333b079d00fb3c8132d18988e47f19740c69303bf02e9883c6 \
+    --hash=sha256:d6353ba89cfc657a3f5beabb3b69be226adbb5c6c7a66398e17809b0ce3c4731 \
+    --hash=sha256:da4377904a3379f0c1b75a965fff23b28315bcd516d27f99a803720dfebd94d4 \
+    --hash=sha256:e49ea4c1a9543d2bd8a747ff24411509c29e4bdcde05b5b0895e2120cb1a761d \
+    --hash=sha256:e4e08305bfd76ba8edab08dcc6496f40674f44eb9d5e23153efa0a35750337e8 \
+    --hash=sha256:e6fa05a680e35d0fcc1470cb070b10e6fe247af54768f488ed93542e71339d6f \
+    --hash=sha256:e7e6f2d6fd48422071cc8a6f8542016f350b79cc782752de531577d35e9bd677 \
+    --hash=sha256:e904c0381c014b914136c492c8fa711ca4cced4e9b3d110e5e7d436d0fc289e8 \
+    --hash=sha256:ec2b0ab7edc8cd4b0eb428b38ed89079bdc20c6bdb5f889d353011038caac2f9 \
+    --hash=sha256:ef5ce841e102278c1c2e98f043db99d6755b1c58bde475516aef3a008ed7f28e \
+    --hash=sha256:f351c7d7d92f67c0609329ab2735eee0426a03022771b00102816a72715bb00b \
+    --hash=sha256:fab7c640815812ed5f10fbee7abbf58788d602046b7bb3af9b1ac753a6d5e916 \
+    --hash=sha256:fc06cc8073c8e87072138ba1e431300e2d408f054b27047d047b549455066ff4
     # via
     #   -c requirements/main.txt
     #   uvicorn
diff --git a/requirements/main.txt b/requirements/main.txt
index ee3e9df..1c3a680 100644
--- a/requirements/main.txt
+++ b/requirements/main.txt
@@ -14,9 +14,9 @@ aioredlock==0.7.3 \
     --hash=sha256:7432fe17cf2ce55292409f4e80d26af5ccbf1a09aa4566e30bcfc5dabd4b3e1f \
     --hash=sha256:903727b26eb571c926018a8ae2b754c6c11861996410e3c4f1309872d2545440
     # via -r requirements/main.in
-anyio==3.5.0 \
-    --hash=sha256:a0aeffe2fb1fdf374a8e4b471444f0f3ac4fb9f5a5b542b48824475e0042a5a6 \
-    --hash=sha256:b5fa16c5ff93fa1046f2eeb5bbff2dad4d3514d6cda61d02816dba34fa8c3c2e
+anyio==3.6.1 \
+    --hash=sha256:413adf95f93886e442aea925f3ee43baa5a765a64a0f52c6081894f9992fdd0b \
+    --hash=sha256:cb29b9c70620506a9a8f87a309591713446953302d7d995344d0d7c6c0c9a7be
     # via
     #   httpcore
     #   starlette
@@ -25,9 +25,9 @@ arq==0.22 \
     --hash=sha256:55a0f933636c804b82c366a0e3710e9e5ed26a716251fa6742777d0b039f7f30 \
     --hash=sha256:c7bd98151cc83cec941ce5f660ede4bee888effd9a4692258ec8a9a0aff2f9f9
     # via -r requirements/main.in
-asgiref==3.5.0 \
-    --hash=sha256:2f8abc20f7248433085eda803936d98992f1343ddb022065779f37c5da0181d0 \
-    --hash=sha256:88d59c13d634dcffe0510be048210188edd79aeccb6a6c9028cdad6f31d730a9
+asgiref==3.5.2 \
+    --hash=sha256:1d2880b792ae8757289136f1db2b7b99100ce959b2aa57fd69dab783d05afac4 \
+    --hash=sha256:4a29362a6acebe09bf1d6640db38c1dc3d9217c68e6f9f6204d72667fc19a424
     # via uvicorn
 async-timeout==4.0.2 \
     --hash=sha256:2163e1640ddb52b7a8c80d0a67a08587e5d245cc9c553a74a847056bc2976b15 \
@@ -37,25 +37,21 @@ attrs==21.4.0 \
     --hash=sha256:2d27e3784d7a565d36ab851fe94887c5eccd6a463168875832a1be79c82828b4 \
     --hash=sha256:626ba8234211db98e869df76230a137c4c40a12d72445c45d5f5b716f076e2fd
     # via aioredlock
-certifi==2021.10.8 \
-    --hash=sha256:78884e7c1d4b00ce3cea67b44566851c4343c120abd683433ce934a68ea58872 \
-    --hash=sha256:d62a0163eb4c2344ac042ab2bdf75399a71a2d8c7d47eac2e2ee91b9d6339569
+certifi==2022.5.18.1 \
+    --hash=sha256:9c5705e395cd70084351dd8ad5c41e65655e08ce46f2ec9cf6c2c08390f71eb7 \
+    --hash=sha256:f1d53542ee8cbedbe2118b5686372fb33c297fcd6379b050cca0ef13a597382a
     # via
     #   httpcore
     #   httpx
-charset-normalizer==2.0.12 \
-    --hash=sha256:2857e29ff0d34db842cd7ca3230549d1a697f96ee6d3fb071cfa6c7393832597 \
-    --hash=sha256:6881edbebdb17b39b4eaaa821b438bf6eddffb4468cf344f09f89def34a8b1df
-    # via httpx
-click==8.0.4 \
-    --hash=sha256:6a7a62563bbfabfda3a38f3023a1db4a35978c0abd76f6c9605ecd6554d6d9b1 \
-    --hash=sha256:8458d7b1287c5fb128c90e23381cf99dcde74beaf6c7ff6384ce84d6fe090adb
+click==8.1.3 \
+    --hash=sha256:7682dc8afb30297001674575ea00d1814d808d6a36af415a82bd481d37ba7b8e \
+    --hash=sha256:bb4d8133cb15a609f44e8213d9b391b0809795062913b383c62be0ee95b1db48
     # via
     #   arq
     #   uvicorn
-fastapi==0.75.0 \
-    --hash=sha256:124774ce4cb3322841965f559669b233a0b8d343ea24fdd8b293253c077220d7 \
-    --hash=sha256:43d12891b78fc497a50623e9c7c24640c569489f060acd9ce2c4902080487a93
+fastapi==0.78.0 \
+    --hash=sha256:15fcabd5c78c266fa7ae7d8de9b384bfc2375ee0503463a6febbe3bab69d6f65 \
+    --hash=sha256:3233d4a789ba018578658e2af1a4bb5e38bdd122ff722b313666a9b2c6786a83
     # via
     #   -r requirements/main.in
     #   safir
@@ -112,9 +108,9 @@ hiredis==2.0.0 \
     --hash=sha256:f52010e0a44e3d8530437e7da38d11fb822acfb0d5b12e9cd5ba655509937ca0 \
     --hash=sha256:f8196f739092a78e4f6b1b2172679ed3343c39c61a3e9d722ce6fcf1dac2824a
     # via aioredis
-httpcore==0.14.7 \
-    --hash=sha256:47d772f754359e56dd9d892d9593b6f9870a37aeb8ba51e9a88b09b3d68cfade \
-    --hash=sha256:7503ec1c0f559066e7e39bc4003fd2ce023d01cf51793e3c173b864eb456ead1
+httpcore==0.15.0 \
+    --hash=sha256:1105b8b73c025f23ff7c36468e4432226cbb959176eab66864b8e31c4ee27fa6 \
+    --hash=sha256:18b68ab86a3ccf3e7dc0f43598eaddcf472b602aba29f9aa6ab85fe2ada3980b
     # via httpx
 httptools==0.4.0 \
     --hash=sha256:1a99346ebcb801b213c591540837340bdf6fd060a8687518d01c607d338b7424 \
@@ -152,9 +148,9 @@ httptools==0.4.0 \
     --hash=sha256:fcddfe70553be717d9745990dfdb194e22ee0f60eb8f48c0794e7bfeda30d2d5 \
     --hash=sha256:fdb9f9ed79bc6f46b021b3319184699ba1a22410a82204e6e89c774530069683
     # via uvicorn
-httpx==0.22.0 \
-    --hash=sha256:d8e778f76d9bbd46af49e7f062467e3157a5a3d2ae4876a4bbfd8a51ed9c9cb4 \
-    --hash=sha256:e35e83d1d2b9b2a609ef367cc4c1e66fd80b750348b20cc9e19d1952fc2ca3f6
+httpx==0.23.0 \
+    --hash=sha256:42974f577483e1e932c3cdc3cd2303e883cbfba17fe228b0f63589764d7b9c4b \
+    --hash=sha256:f28eac771ec9eb4866d3fb4ab65abd42d38c424739e80c08d8d20570de60b0ef
     # via
     #   -r requirements/main.in
     #   safir
@@ -164,42 +160,42 @@ idna==3.3 \
     # via
     #   anyio
     #   rfc3986
-pydantic[dotenv]==1.9.0 \
-    --hash=sha256:085ca1de245782e9b46cefcf99deecc67d418737a1fd3f6a4f511344b613a5b3 \
-    --hash=sha256:086254884d10d3ba16da0588604ffdc5aab3f7f09557b998373e885c690dd398 \
-    --hash=sha256:0b6037175234850ffd094ca77bf60fb54b08b5b22bc85865331dd3bda7a02fa1 \
-    --hash=sha256:0fe476769acaa7fcddd17cadd172b156b53546ec3614a4d880e5d29ea5fbce65 \
-    --hash=sha256:1d5278bd9f0eee04a44c712982343103bba63507480bfd2fc2790fa70cd64cf4 \
-    --hash=sha256:2cc6a4cb8a118ffec2ca5fcb47afbacb4f16d0ab8b7350ddea5e8ef7bcc53a16 \
-    --hash=sha256:2ee7e3209db1e468341ef41fe263eb655f67f5c5a76c924044314e139a1103a2 \
-    --hash=sha256:3011b975c973819883842c5ab925a4e4298dffccf7782c55ec3580ed17dc464c \
-    --hash=sha256:3c3b035103bd4e2e4a28da9da7ef2fa47b00ee4a9cf4f1a735214c1bcd05e0f6 \
-    --hash=sha256:4c68c3bc88dbda2a6805e9a142ce84782d3930f8fdd9655430d8576315ad97ce \
-    --hash=sha256:574936363cd4b9eed8acdd6b80d0143162f2eb654d96cb3a8ee91d3e64bf4cf9 \
-    --hash=sha256:5a79330f8571faf71bf93667d3ee054609816f10a259a109a0738dac983b23c3 \
-    --hash=sha256:5e48ef4a8b8c066c4a31409d91d7ca372a774d0212da2787c0d32f8045b1e034 \
-    --hash=sha256:6c5b77947b9e85a54848343928b597b4f74fc364b70926b3c4441ff52620640c \
-    --hash=sha256:742645059757a56ecd886faf4ed2441b9c0cd406079c2b4bee51bcc3fbcd510a \
-    --hash=sha256:7bdfdadb5994b44bd5579cfa7c9b0e1b0e540c952d56f627eb227851cda9db77 \
-    --hash=sha256:815ddebb2792efd4bba5488bc8fde09c29e8ca3227d27cf1c6990fc830fd292b \
-    --hash=sha256:8b5ac0f1c83d31b324e57a273da59197c83d1bb18171e512908fe5dc7278a1d6 \
-    --hash=sha256:96f240bce182ca7fe045c76bcebfa0b0534a1bf402ed05914a6f1dadff91877f \
-    --hash=sha256:a733965f1a2b4090a5238d40d983dcd78f3ecea221c7af1497b845a9709c1721 \
-    --hash=sha256:ab624700dc145aa809e6f3ec93fb8e7d0f99d9023b713f6a953637429b437d37 \
-    --hash=sha256:b2571db88c636d862b35090ccf92bf24004393f85c8870a37f42d9f23d13e032 \
-    --hash=sha256:bbbc94d0c94dd80b3340fc4f04fd4d701f4b038ebad72c39693c794fd3bc2d9d \
-    --hash=sha256:c0727bda6e38144d464daec31dff936a82917f431d9c39c39c60a26567eae3ed \
-    --hash=sha256:c556695b699f648c58373b542534308922c46a1cda06ea47bc9ca45ef5b39ae6 \
-    --hash=sha256:c86229333cabaaa8c51cf971496f10318c4734cf7b641f08af0a6fbf17ca3054 \
-    --hash=sha256:c8d7da6f1c1049eefb718d43d99ad73100c958a5367d30b9321b092771e96c25 \
-    --hash=sha256:c8e9dcf1ac499679aceedac7e7ca6d8641f0193c591a2d090282aaf8e9445a46 \
-    --hash=sha256:cb23bcc093697cdea2708baae4f9ba0e972960a835af22560f6ae4e7e47d33f5 \
-    --hash=sha256:d1e4c28f30e767fd07f2ddc6f74f41f034d1dd6bc526cd59e63a82fe8bb9ef4c \
-    --hash=sha256:d9c9bdb3af48e242838f9f6e6127de9be7063aad17b32215ccc36a09c5cf1070 \
-    --hash=sha256:dee5ef83a76ac31ab0c78c10bd7d5437bfdb6358c95b91f1ba7ff7b76f9996a1 \
-    --hash=sha256:e0896200b6a40197405af18828da49f067c2fa1f821491bc8f5bde241ef3f7d7 \
-    --hash=sha256:f5a64b64ddf4c99fe201ac2724daada8595ada0d102ab96d019c1555c2d6441d \
-    --hash=sha256:f947352c3434e8b937e3aa8f96f47bdfe6d92779e44bb3f41e4c213ba6a32145
+pydantic[dotenv]==1.9.1 \
+    --hash=sha256:02eefd7087268b711a3ff4db528e9916ac9aa18616da7bca69c1871d0b7a091f \
+    --hash=sha256:059b6c1795170809103a1538255883e1983e5b831faea6558ef873d4955b4a74 \
+    --hash=sha256:0bf07cab5b279859c253d26a9194a8906e6f4a210063b84b433cf90a569de0c1 \
+    --hash=sha256:1542636a39c4892c4f4fa6270696902acb186a9aaeac6f6cf92ce6ae2e88564b \
+    --hash=sha256:177071dfc0df6248fd22b43036f936cfe2508077a72af0933d0c1fa269b18537 \
+    --hash=sha256:18f3e912f9ad1bdec27fb06b8198a2ccc32f201e24174cec1b3424dda605a310 \
+    --hash=sha256:1dd8fecbad028cd89d04a46688d2fcc14423e8a196d5b0a5c65105664901f810 \
+    --hash=sha256:1ed987c3ff29fff7fd8c3ea3a3ea877ad310aae2ef9889a119e22d3f2db0691a \
+    --hash=sha256:447d5521575f18e18240906beadc58551e97ec98142266e521c34968c76c8761 \
+    --hash=sha256:494f7c8537f0c02b740c229af4cb47c0d39840b829ecdcfc93d91dcbb0779892 \
+    --hash=sha256:4988c0f13c42bfa9ddd2fe2f569c9d54646ce84adc5de84228cfe83396f3bd58 \
+    --hash=sha256:4ce9ae9e91f46c344bec3b03d6ee9612802682c1551aaf627ad24045ce090761 \
+    --hash=sha256:5d93d4e95eacd313d2c765ebe40d49ca9dd2ed90e5b37d0d421c597af830c195 \
+    --hash=sha256:61b6760b08b7c395975d893e0b814a11cf011ebb24f7d869e7118f5a339a82e1 \
+    --hash=sha256:72ccb318bf0c9ab97fc04c10c37683d9eea952ed526707fabf9ac5ae59b701fd \
+    --hash=sha256:79b485767c13788ee314669008d01f9ef3bc05db9ea3298f6a50d3ef596a154b \
+    --hash=sha256:7eb57ba90929bac0b6cc2af2373893d80ac559adda6933e562dcfb375029acee \
+    --hash=sha256:8bc541a405423ce0e51c19f637050acdbdf8feca34150e0d17f675e72d119580 \
+    --hash=sha256:969dd06110cb780da01336b281f53e2e7eb3a482831df441fb65dd30403f4608 \
+    --hash=sha256:985ceb5d0a86fcaa61e45781e567a59baa0da292d5ed2e490d612d0de5796918 \
+    --hash=sha256:9bcf8b6e011be08fb729d110f3e22e654a50f8a826b0575c7196616780683380 \
+    --hash=sha256:9ce157d979f742a915b75f792dbd6aa63b8eccaf46a1005ba03aa8a986bde34a \
+    --hash=sha256:9f659a5ee95c8baa2436d392267988fd0f43eb774e5eb8739252e5a7e9cf07e0 \
+    --hash=sha256:a4a88dcd6ff8fd47c18b3a3709a89adb39a6373f4482e04c1b765045c7e282fd \
+    --hash=sha256:a955260d47f03df08acf45689bd163ed9df82c0e0124beb4251b1290fa7ae728 \
+    --hash=sha256:a9af62e9b5b9bc67b2a195ebc2c2662fdf498a822d62f902bf27cccb52dbbf49 \
+    --hash=sha256:ae72f8098acb368d877b210ebe02ba12585e77bd0db78ac04a1ee9b9f5dd2166 \
+    --hash=sha256:b83ba3825bc91dfa989d4eed76865e71aea3a6ca1388b59fc801ee04c4d8d0d6 \
+    --hash=sha256:c11951b404e08b01b151222a1cb1a9f0a860a8153ce8334149ab9199cd198131 \
+    --hash=sha256:c320c64dd876e45254bdd350f0179da737463eea41c43bacbee9d8c9d1021f11 \
+    --hash=sha256:c8098a724c2784bf03e8070993f6d46aa2eeca031f8d8a048dff277703e6e193 \
+    --hash=sha256:d12f96b5b64bec3f43c8e82b4aab7599d0157f11c798c9f9c528a72b9e0b339a \
+    --hash=sha256:e565a785233c2d03724c4dc55464559639b1ba9ecf091288dd47ad9c629433bd \
+    --hash=sha256:f0f047e11febe5c3198ed346b507e1d010330d56ad615a7e0a89fae604065a0e \
+    --hash=sha256:fe4670cb32ea98ffbf5a1262f14c3e102cccd92b1869df3bb09538158ba90fe6
     # via
     #   -r requirements/main.in
     #   arq
@@ -252,9 +248,9 @@ rfc3986[idna2008]==1.5.0 \
     --hash=sha256:270aaf10d87d0d4e095063c65bf3ddbc6ee3d0b226328ce21e036f946e421835 \
     --hash=sha256:a86d6e1f5b1dc238b218b012df0aa79409667bb209e58da56d0b94704e712a97
     # via httpx
-safir==3.0.2 \
-    --hash=sha256:6041e5b8ac236de654bf1edf2f086c8889eba28453e5262cb68f0ffe3561a3f5 \
-    --hash=sha256:89b1503f27126ef651233e076ad2a2bbf12c472a467349f45c37f5d9cfbf05cb
+safir==3.0.3 \
+    --hash=sha256:2bf4c069b3bb3fa819e69ba2d7bf2e4a406db7341bfa31f3d9057da10b2f6518 \
+    --hash=sha256:2de146ff512b3e74e353d8dc44a497d48bc7336dd712a06a07b718f22e26329c
     # via -r requirements/main.in
 sniffio==1.2.0 \
     --hash=sha256:471b71698eac1c2112a40ce2752bb2f4a4814c22a54a3eed3676bc0f5ca9f663 \
@@ -263,9 +259,9 @@ sniffio==1.2.0 \
     #   anyio
     #   httpcore
     #   httpx
-starlette==0.17.1 \
-    --hash=sha256:26a18cbda5e6b651c964c12c88b36d9898481cd428ed6e063f5f29c418f73050 \
-    --hash=sha256:57eab3cc975a28af62f6faec94d355a410634940f10b30d68d31cb5ec1b44ae8
+starlette==0.19.1 \
+    --hash=sha256:5a60c5c2d051f3a8eb546136aa0c9399773a689595e099e0877704d5888279bf \
+    --hash=sha256:c6d21096774ecb9639acad41b86b7706e52ba3bf1dc13ea4ed9ad593d47e24c7
     # via
     #   -r requirements/main.in
     #   fastapi
@@ -274,9 +270,9 @@ structlog==21.5.0 \
     --hash=sha256:68c4c29c003714fe86834f347cb107452847ba52414390a7ee583472bde00fc9 \
     --hash=sha256:fd7922e195262b337da85c2a91c84be94ccab1f8fd1957bd6986f6904e3761c8
     # via safir
-typing-extensions==4.1.1 \
-    --hash=sha256:1a9462dcc3347a79b1f1c0271fbe79e844580bb598bafa1ed208b94da3cdcd42 \
-    --hash=sha256:21c85e0fe4b9a155d0799430b0ad741cdce7e359660ccbd8b530613e8df88ce2
+typing-extensions==4.2.0 \
+    --hash=sha256:6657594ee297170d19f67d55c05852a874e7eb634f4f753dbd667855e07c1708 \
+    --hash=sha256:f1c24655a0da0d1b67f07e17a5e6b2a105894e6824b92096378bb3668ef02376
     # via pydantic
 uvicorn[standard]==0.17.6 \
     --hash=sha256:19e2a0e96c9ac5581c01eb1a79a7d2f72bb479691acd2b8921fce48ed5b961a6 \
@@ -300,59 +296,59 @@ uvloop==0.16.0 \
     --hash=sha256:e814ac2c6f9daf4c36eb8e85266859f42174a4ff0d71b99405ed559257750382 \
     --hash=sha256:f74bc20c7b67d1c27c72601c78cf95be99d5c2cdd4514502b4f3eb0933ff1228
     # via uvicorn
-watchgod==0.8.1 \
-    --hash=sha256:4ba20c2fa3e63df706ab50e694b9453b05395fadb7cbbfd984d71fb1547d485d \
-    --hash=sha256:c12d15f3df7d11e740704e45398277f75f1d78f46ad59ca9d7505bfd8b8d3086
+watchgod==0.8.2 \
+    --hash=sha256:2f3e8137d98f493ff58af54ea00f4d1433a6afe2ed08ab331a657df468c6bfce \
+    --hash=sha256:cb11ff66657befba94d828e3b622d5fb76f22fbda1376f355f3e6e51e97d9450
     # via uvicorn
-websockets==10.2 \
-    --hash=sha256:038afef2a05893578d10dadbdbb5f112bd115c46347e1efe99f6a356ff062138 \
-    --hash=sha256:05f6e9757017270e7a92a2975e2ae88a9a582ffc4629086fd6039aa80e99cd86 \
-    --hash=sha256:0b66421f9f13d4df60cd48ab977ed2c2b6c9147ae1a33caf5a9f46294422fda1 \
-    --hash=sha256:0cd02f36d37e503aca88ab23cc0a1a0e92a263d37acf6331521eb38040dcf77b \
-    --hash=sha256:0f73cb2526d6da268e86977b2c4b58f2195994e53070fe567d5487c6436047e6 \
-    --hash=sha256:117383d0a17a0dda349f7a8790763dde75c1508ff8e4d6e8328b898b7df48397 \
-    --hash=sha256:1c1f3b18c8162e3b09761d0c6a0305fd642934202541cc511ef972cb9463261e \
-    --hash=sha256:1c9031e90ebfc486e9cdad532b94004ade3aa39a31d3c46c105bb0b579cd2490 \
-    --hash=sha256:2349fa81b6b959484bb2bda556ccb9eb70ba68987646a0f8a537a1a18319fb03 \
-    --hash=sha256:24b879ba7db12bb525d4e58089fcbe6a3df3ce4666523183654170e86d372cbe \
-    --hash=sha256:2aa9b91347ecd0412683f28aabe27f6bad502d89bd363b76e0a3508b1596402e \
-    --hash=sha256:56d48eebe9e39ce0d68701bce3b21df923aa05dcc00f9fd8300de1df31a7c07c \
-    --hash=sha256:5a38a0175ae82e4a8c4bac29fc01b9ee26d7d5a614e5ee11e7813c68a7d938ce \
-    --hash=sha256:5b04270b5613f245ec84bb2c6a482a9d009aefad37c0575f6cda8499125d5d5c \
-    --hash=sha256:6193bbc1ee63aadeb9a4d81de0e19477401d150d506aee772d8380943f118186 \
-    --hash=sha256:669e54228a4d9457abafed27cbf0e2b9f401445c4dfefc12bf8e4db9751703b8 \
-    --hash=sha256:6a009eb551c46fd79737791c0c833fc0e5b56bcd1c3057498b262d660b92e9cd \
-    --hash=sha256:71a4491cfe7a9f18ee57d41163cb6a8a3fa591e0f0564ca8b0ed86b2a30cced4 \
-    --hash=sha256:7b38a5c9112e3dbbe45540f7b60c5204f49b3cb501b40950d6ab34cd202ab1d0 \
-    --hash=sha256:7bb9d8a6beca478c7e9bdde0159bd810cc1006ad6a7cb460533bae39da692ca2 \
-    --hash=sha256:82bc33db6d8309dc27a3bee11f7da2288ad925fcbabc2a4bb78f7e9c56249baf \
-    --hash=sha256:8351c3c86b08156337b0e4ece0e3c5ec3e01fcd14e8950996832a23c99416098 \
-    --hash=sha256:8beac786a388bb99a66c3be4ab0fb38273c0e3bc17f612a4e0a47c4fc8b9c045 \
-    --hash=sha256:97950c7c844ec6f8d292440953ae18b99e3a6a09885e09d20d5e7ecd9b914cf8 \
-    --hash=sha256:98f57b3120f8331cd7440dbe0e776474f5e3632fdaa474af1f6b754955a47d71 \
-    --hash=sha256:9ca2ca05a4c29179f06cf6727b45dba5d228da62623ec9df4184413d8aae6cb9 \
-    --hash=sha256:a03a25d95cc7400bd4d61a63460b5d85a7761c12075ee2f51de1ffe73aa593d3 \
-    --hash=sha256:a10c0c1ee02164246f90053273a42d72a3b2452a7e7486fdae781138cf7fbe2d \
-    --hash=sha256:a72b92f96e5e540d5dda99ee3346e199ade8df63152fa3c737260da1730c411f \
-    --hash=sha256:ac081aa0307f263d63c5ff0727935c736c8dad51ddf2dc9f5d0c4759842aefaa \
-    --hash=sha256:b22bdc795e62e71118b63e14a08bacfa4f262fd2877de7e5b950f5ac16b0348f \
-    --hash=sha256:b4059e2ccbe6587b6dc9a01db5fc49ead9a884faa4076eea96c5ec62cb32f42a \
-    --hash=sha256:b7fe45ae43ac814beb8ca09d6995b56800676f2cfa8e23f42839dc69bba34a42 \
-    --hash=sha256:bef03a51f9657fb03d8da6ccd233fe96e04101a852f0ffd35f5b725b28221ff3 \
-    --hash=sha256:bffc65442dd35c473ca9790a3fa3ba06396102a950794f536783f4b8060af8dd \
-    --hash=sha256:c21a67ab9a94bd53e10bba21912556027fea944648a09e6508415ad14e37c325 \
-    --hash=sha256:c67d9cacb3f6537ca21e9b224d4fd08481538e43bcac08b3d93181b0816def39 \
-    --hash=sha256:c6e56606842bb24e16e36ae7eb308d866b4249cf0be8f63b212f287eeb76b124 \
-    --hash=sha256:cb316b87cbe3c0791c2ad92a5a36bf6adc87c457654335810b25048c1daa6fd5 \
-    --hash=sha256:cef40a1b183dcf39d23b392e9dd1d9b07ab9c46aadf294fff1350fb79146e72b \
-    --hash=sha256:cf931c33db9c87c53d009856045dd524e4a378445693382a920fa1e0eb77c36c \
-    --hash=sha256:d4d110a84b63c5cfdd22485acc97b8b919aefeecd6300c0c9d551e055b9a88ea \
-    --hash=sha256:d5396710f86a306cf52f87fd8ea594a0e894ba0cc5a36059eaca3a477dc332aa \
-    --hash=sha256:f09f46b1ff6d09b01c7816c50bd1903cf7d02ebbdb63726132717c2fcda835d5 \
-    --hash=sha256:f14bd10e170abc01682a9f8b28b16e6f20acf6175945ef38db6ffe31b0c72c3f \
-    --hash=sha256:f5c335dc0e7dc271ef36df3f439868b3c790775f345338c2f61a562f1074187b \
-    --hash=sha256:f8296b8408ec6853b26771599990721a26403e62b9de7e50ac0a056772ac0b5e \
-    --hash=sha256:fa35c5d1830d0fb7b810324e9eeab9aa92e8f273f11fdbdc0741dcded6d72b9f
+websockets==10.3 \
+    --hash=sha256:07cdc0a5b2549bcfbadb585ad8471ebdc7bdf91e32e34ae3889001c1c106a6af \
+    --hash=sha256:210aad7fdd381c52e58777560860c7e6110b6174488ef1d4b681c08b68bf7f8c \
+    --hash=sha256:28dd20b938a57c3124028680dc1600c197294da5db4292c76a0b48efb3ed7f76 \
+    --hash=sha256:2f94fa3ae454a63ea3a19f73b95deeebc9f02ba2d5617ca16f0bbdae375cda47 \
+    --hash=sha256:31564a67c3e4005f27815634343df688b25705cccb22bc1db621c781ddc64c69 \
+    --hash=sha256:347974105bbd4ea068106ec65e8e8ebd86f28c19e529d115d89bd8cc5cda3079 \
+    --hash=sha256:379e03422178436af4f3abe0aa8f401aa77ae2487843738542a75faf44a31f0c \
+    --hash=sha256:3eda1cb7e9da1b22588cefff09f0951771d6ee9fa8dbe66f5ae04cc5f26b2b55 \
+    --hash=sha256:51695d3b199cd03098ae5b42833006a0f43dc5418d3102972addc593a783bc02 \
+    --hash=sha256:54c000abeaff6d8771a4e2cef40900919908ea7b6b6a30eae72752607c6db559 \
+    --hash=sha256:5b936bf552e4f6357f5727579072ff1e1324717902127ffe60c92d29b67b7be3 \
+    --hash=sha256:6075fd24df23133c1b078e08a9b04a3bc40b31a8def4ee0b9f2c8865acce913e \
+    --hash=sha256:661f641b44ed315556a2fa630239adfd77bd1b11cb0b9d96ed8ad90b0b1e4978 \
+    --hash=sha256:6ea6b300a6bdd782e49922d690e11c3669828fe36fc2471408c58b93b5535a98 \
+    --hash=sha256:6ed1d6f791eabfd9808afea1e068f5e59418e55721db8b7f3bfc39dc831c42ae \
+    --hash=sha256:7934e055fd5cd9dee60f11d16c8d79c4567315824bacb1246d0208a47eca9755 \
+    --hash=sha256:7ab36e17af592eec5747c68ef2722a74c1a4a70f3772bc661079baf4ae30e40d \
+    --hash=sha256:7f6d96fdb0975044fdd7953b35d003b03f9e2bcf85f2d2cf86285ece53e9f991 \
+    --hash=sha256:83e5ca0d5b743cde3d29fda74ccab37bdd0911f25bd4cdf09ff8b51b7b4f2fa1 \
+    --hash=sha256:85506b3328a9e083cc0a0fb3ba27e33c8db78341b3eb12eb72e8afd166c36680 \
+    --hash=sha256:8af75085b4bc0b5c40c4a3c0e113fa95e84c60f4ed6786cbb675aeb1ee128247 \
+    --hash=sha256:8b1359aba0ff810d5830d5ab8e2c4a02bebf98a60aa0124fb29aa78cfdb8031f \
+    --hash=sha256:8fbd7d77f8aba46d43245e86dd91a8970eac4fb74c473f8e30e9c07581f852b2 \
+    --hash=sha256:907e8247480f287aa9bbc9391bd6de23c906d48af54c8c421df84655eef66af7 \
+    --hash=sha256:93d5ea0b5da8d66d868b32c614d2b52d14304444e39e13a59566d4acb8d6e2e4 \
+    --hash=sha256:97bc9d41e69a7521a358f9b8e44871f6cdeb42af31815c17aed36372d4eec667 \
+    --hash=sha256:994cdb1942a7a4c2e10098d9162948c9e7b235df755de91ca33f6e0481366fdb \
+    --hash=sha256:a141de3d5a92188234afa61653ed0bbd2dde46ad47b15c3042ffb89548e77094 \
+    --hash=sha256:a1e15b230c3613e8ea82c9fc6941b2093e8eb939dd794c02754d33980ba81e36 \
+    --hash=sha256:aad5e300ab32036eb3fdc350ad30877210e2f51bceaca83fb7fef4d2b6c72b79 \
+    --hash=sha256:b529fdfa881b69fe563dbd98acce84f3e5a67df13de415e143ef053ff006d500 \
+    --hash=sha256:b9c77f0d1436ea4b4dc089ed8335fa141e6a251a92f75f675056dac4ab47a71e \
+    --hash=sha256:bb621ec2dbbbe8df78a27dbd9dd7919f9b7d32a73fafcb4d9252fc4637343582 \
+    --hash=sha256:c7250848ce69559756ad0086a37b82c986cd33c2d344ab87fea596c5ac6d9442 \
+    --hash=sha256:c8d1d14aa0f600b5be363077b621b1b4d1eb3fbf90af83f9281cda668e6ff7fd \
+    --hash=sha256:d1655a6fc7aecd333b079d00fb3c8132d18988e47f19740c69303bf02e9883c6 \
+    --hash=sha256:d6353ba89cfc657a3f5beabb3b69be226adbb5c6c7a66398e17809b0ce3c4731 \
+    --hash=sha256:da4377904a3379f0c1b75a965fff23b28315bcd516d27f99a803720dfebd94d4 \
+    --hash=sha256:e49ea4c1a9543d2bd8a747ff24411509c29e4bdcde05b5b0895e2120cb1a761d \
+    --hash=sha256:e4e08305bfd76ba8edab08dcc6496f40674f44eb9d5e23153efa0a35750337e8 \
+    --hash=sha256:e6fa05a680e35d0fcc1470cb070b10e6fe247af54768f488ed93542e71339d6f \
+    --hash=sha256:e7e6f2d6fd48422071cc8a6f8542016f350b79cc782752de531577d35e9bd677 \
+    --hash=sha256:e904c0381c014b914136c492c8fa711ca4cced4e9b3d110e5e7d436d0fc289e8 \
+    --hash=sha256:ec2b0ab7edc8cd4b0eb428b38ed89079bdc20c6bdb5f889d353011038caac2f9 \
+    --hash=sha256:ef5ce841e102278c1c2e98f043db99d6755b1c58bde475516aef3a008ed7f28e \
+    --hash=sha256:f351c7d7d92f67c0609329ab2735eee0426a03022771b00102816a72715bb00b \
+    --hash=sha256:fab7c640815812ed5f10fbee7abbf58788d602046b7bb3af9b1ac753a6d5e916 \
+    --hash=sha256:fc06cc8073c8e87072138ba1e431300e2d408f054b27047d047b549455066ff4
     # via
     #   -r requirements/main.in
     #   uvicorn
diff --git a/src/noteburst/config.py b/src/noteburst/config.py
index e1870aa..ac70baa 100644
--- a/src/noteburst/config.py
+++ b/src/noteburst/config.py
@@ -95,6 +95,14 @@ class WorkerConfig(Config):
         "redis://localhost:6379/1", env="NOTEBURST_WORKER_LOCK_REDIS_URL"
     )
 
+    job_timeout: int = Field(
+        300,
+        env="NOTEBURST_WORKER_JOB_TIMEOUT",
+        description=(
+            "The timeout, in seconds, for a job until it is timed out."
+        ),
+    )
+
     @property
     def aioredlock_redis_config(self) -> List[str]:
         """Redis configurations for aioredlock."""
diff --git a/src/noteburst/jupyterclient/jupyterlab.py b/src/noteburst/jupyterclient/jupyterlab.py
index 5e86c95..4c70ceb 100644
--- a/src/noteburst/jupyterclient/jupyterlab.py
+++ b/src/noteburst/jupyterclient/jupyterlab.py
@@ -303,8 +303,6 @@ def __str__(self) -> str:
             f"{self.username}: status {self.status} ({self.reason}) from"
             f" {self.method} {self.url}"
         )
-        if self.body:
-            result += f"\nBody:\n{self.body}\n"
         return result
 
 
diff --git a/src/noteburst/worker/functions/__init__.py b/src/noteburst/worker/functions/__init__.py
index fee7e6f..baba184 100644
--- a/src/noteburst/worker/functions/__init__.py
+++ b/src/noteburst/worker/functions/__init__.py
@@ -1,5 +1,6 @@
-__all__ = ["ping", "nbexec", "run_python"]
+__all__ = ["ping", "nbexec", "run_python", "keep_alive"]
 
+from .keepalive import keep_alive
 from .nbexec import nbexec
 from .ping import ping
 from .runpython import run_python
diff --git a/src/noteburst/worker/functions/keepalive.py b/src/noteburst/worker/functions/keepalive.py
new file mode 100644
index 0000000..ff160e6
--- /dev/null
+++ b/src/noteburst/worker/functions/keepalive.py
@@ -0,0 +1,42 @@
+"""Execute Python in the JupyterLab kernel to prevent it from being culled."""
+
+from __future__ import annotations
+
+import sys
+from typing import Any, Dict
+
+from noteburst.jupyterclient.jupyterlab import JupyterError
+
+
+async def keep_alive(ctx: Dict[Any, Any]) -> str:
+    """Execute Python code in a JupyterLab pod with a specific Jupyter kernel.
+
+    Parameters
+    ----------
+    ctx
+        Arq worker context.
+
+    Returns
+    -------
+    result : str
+        The standard-out
+    """
+    logger = ctx["logger"].bind(task="keep_alive")
+    logger.info("Running keep_alive")
+
+    jupyter_client = ctx["jupyter_client"]
+    try:
+        async with jupyter_client.open_lab_session(
+            kernel_name="LSST"
+        ) as session:
+            await session.run_python("print('alive')")
+    except JupyterError as e:
+        logger.error("keep_alive error", jupyter_status=e.status)
+        if e.status >= 400 and e.status < 500:
+            logger.error(
+                "Authentication error to Jupyter. Forcing worker shutdown",
+                jupyter_status=e.status,
+            )
+            sys.exit("400 class error from Jupyter")
+
+    return "alive"
diff --git a/src/noteburst/worker/functions/nbexec.py b/src/noteburst/worker/functions/nbexec.py
index cf32522..926804f 100644
--- a/src/noteburst/worker/functions/nbexec.py
+++ b/src/noteburst/worker/functions/nbexec.py
@@ -5,21 +5,42 @@
 from __future__ import annotations
 
 import json
+import sys
 from typing import Any, Dict
 
+from arq import Retry
+
+from noteburst.jupyterclient.jupyterlab import JupyterError
+
 
 async def nbexec(
     ctx: Dict[Any, Any], *, ipynb: str, kernel_name: str = "LSST"
 ) -> str:
-    logger = ctx["logger"].bind(task="nbexec")
+    logger = ctx["logger"].bind(
+        task="nbexec", job_attempt=ctx.get("job_try", -1)
+    )
     logger.info("Running nbexec")
 
     jupyter_client = ctx["jupyter_client"]
 
     parsed_notebook = json.loads(ipynb)
     logger.debug("Got ipynb", ipynb=parsed_notebook)
-    executed_notebook = await jupyter_client.execute_notebook(
-        parsed_notebook, kernel_name=kernel_name
-    )
+    try:
+        executed_notebook = await jupyter_client.execute_notebook(
+            parsed_notebook, kernel_name=kernel_name
+        )
+        logger.debug("nbexec success")
+    except JupyterError as e:
+        logger.error("nbexec error", jupyter_status=e.status)
+        if e.status >= 400 and e.status < 500:
+            logger.error(
+                "Authentication error to Jupyter. Forcing worker shutdown",
+                jupyter_status=e.status,
+            )
+            sys.exit("400 class error from Jupyter")
+        else:
+            # trigger re-try with increasing back-off
+            logger.warning("Triggering retry")
+            raise Retry(defer=ctx["job_try"] * 5)
 
     return json.dumps(executed_notebook)
diff --git a/src/noteburst/worker/identity.py b/src/noteburst/worker/identity.py
index 1ce3f9c..4f02099 100644
--- a/src/noteburst/worker/identity.py
+++ b/src/noteburst/worker/identity.py
@@ -120,14 +120,19 @@ def from_config(cls, config: WorkerConfig) -> IdentityManager:
 
     async def close(self) -> None:
         """Release any claimed identity and connection to Redis."""
+        await self._release_identity()
+        await self.lock_manager.destroy()
+        self._logger.info("Shut down identity manager")
+
+    async def _release_identity(self) -> None:
         if self._current_identity is not None:
             await self._current_identity.release()
             self._current_identity = None
             self._logger.info("Released worker user identity")
-        await self.lock_manager.destroy()
-        self._logger.info("Shut down identity manager")
 
-    async def get_identity(self) -> IdentityClaim:
+    async def get_identity(
+        self, _identities: Optional[List[IdentityModel]] = None
+    ) -> IdentityClaim:
         """Get a unique identity (either claiming a new identity or providing
         the already-claimed identity).
 
@@ -138,13 +143,18 @@ async def get_identity(self) -> IdentityClaim:
         `IdentityClaim`
             Information about the Science Platform identity.
         """
+        if _identities:
+            identities = _identities
+        else:
+            identities = self.identities
+
         if self._current_identity:
             if self._current_identity.valid:
                 return self._current_identity
             else:
                 self._current_identity = None
 
-        for identity in self.identities:
+        for identity in identities:
             try:
                 # We don't set the timeout argument on lock; in doing so we
                 # use aioredlock's built-in watchdog that renews locks.
@@ -164,3 +174,29 @@ async def get_identity(self) -> IdentityClaim:
         raise IdentityClaimError(
             "Could not claim an Science Platform identity (none available)."
         )
+
+    async def get_next_identity(
+        self, prev_identity: IdentityClaim
+    ) -> IdentityClaim:
+        """Get the next available identity if the existing identity claim
+        did not result in a successful JupyterLab launch.
+
+        If a worker exits and the JupyterLab pod does not successfully close,
+        it becomes orphaned. If a new worker picks up the identity of the
+        orphaned JupyterLab pod, its start-up sequence will fail. This method
+        provides a way for the worker to try the next available identity in
+        that circumstance.
+        """
+        await self._release_identity()
+
+        for i, identity in enumerate(self.identities):
+            if identity.username == prev_identity.username:
+                break
+
+        if i + 1 >= len(self.identities):
+            raise IdentityClaimError(
+                "Could not claim an Science Platform identity (none "
+                "available)."
+            )
+
+        return await self.get_identity(_identities=self.identities[i + 1 :])
diff --git a/src/noteburst/worker/main.py b/src/noteburst/worker/main.py
index 469bff8..f8f72fa 100644
--- a/src/noteburst/worker/main.py
+++ b/src/noteburst/worker/main.py
@@ -6,17 +6,19 @@
 
 import httpx
 import structlog
+from arq import cron
 from safir.logging import configure_logging
 
 from noteburst.config import WorkerConfig
 from noteburst.jupyterclient.jupyterlab import (
     JupyterClient,
     JupyterConfig,
+    JupyterError,
     JupyterImageSelector,
 )
 from noteburst.jupyterclient.user import User
 
-from .functions import nbexec, ping, run_python
+from .functions import keep_alive, nbexec, ping, run_python
 from .identity import IdentityManager
 
 config = WorkerConfig()
@@ -44,33 +46,40 @@ async def startup(ctx: Dict[Any, Any]) -> None:
     identity_manager = IdentityManager.from_config(config)
     ctx["identity_manager"] = identity_manager
 
-    identity = await identity_manager.get_identity()
-
-    logger = logger.bind(worker_username=identity.username)
-
     http_client = httpx.AsyncClient()
     ctx["http_client"] = http_client
 
-    user = User(username=identity.username, uid=identity.uid)
-    authed_user = await user.login(
-        scopes=["exec:notebook"], http_client=http_client
-    )
-    logger.info("Authenticated the worker's user.")
-
     jupyter_config = JupyterConfig(
         image_selector=JupyterImageSelector.RECOMMENDED
     )
-    jupyter_client = JupyterClient(
-        user=authed_user, logger=logger, config=jupyter_config
-    )
-    await jupyter_client.log_into_hub()
-    image_info = await jupyter_client.spawn_lab()
-    logger = logger.bind(image_ref=image_info.reference)
-    async for progress in jupyter_client.spawn_progress():
-        continue
-    await jupyter_client.log_into_lab()
-    ctx["jupyter_client"] = jupyter_client
 
+    identity = await identity_manager.get_identity()
+
+    while True:
+        logger = logger.bind(worker_username=identity.username)
+
+        user = User(username=identity.username, uid=identity.uid)
+        authed_user = await user.login(
+            scopes=["exec:notebook"], http_client=http_client
+        )
+        logger.info("Authenticated the worker's user.")
+
+        jupyter_client = JupyterClient(
+            user=authed_user, logger=logger, config=jupyter_config
+        )
+        await jupyter_client.log_into_hub()
+        try:
+            image_info = await jupyter_client.spawn_lab()
+            logger = logger.bind(image_ref=image_info.reference)
+            async for progress in jupyter_client.spawn_progress():
+                continue
+            await jupyter_client.log_into_lab()
+            break
+        except JupyterError:
+            logger.warning("Error spawning pod, will re-try with new identity")
+            identity = await identity_manager.get_next_identity(identity)
+
+    ctx["jupyter_client"] = jupyter_client
     ctx["logger"] = logger
 
     logger.info("Start up complete")
@@ -104,6 +113,11 @@ async def shutdown(ctx: Dict[Any, Any]) -> None:
     logger.info("Worker shutdown complete.")
 
 
+# For info on ignoring the type checking here, see
+# https://github.com/samuelcolvin/arq/issues/249
+cron_jobs = [cron(keep_alive, second={0, 30}, unique=False)]  # type: ignore
+
+
 class WorkerSettings:
     """Configuration for a Noteburst worker.
 
@@ -112,6 +126,8 @@ class WorkerSettings:
 
     functions = [ping, nbexec, run_python]
 
+    cron_jobs = cron_jobs
+
     redis_settings = config.arq_redis_settings
 
     queue_name = config.queue_name
@@ -119,3 +135,5 @@ class WorkerSettings:
     on_startup = startup
 
     on_shutdown = shutdown
+
+    job_timeout = config.job_timeout