diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e8e2d8b7..82475a38 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,7 +22,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: [3.6, 3.7, 3.8, 3.9, "3.10"]
+        python-version: [3.7, 3.8, 3.9, "3.10"]
         include:
           - os: ubuntu-latest
             path: ~/.cache/pypoetry
@@ -39,7 +39,6 @@ jobs:
       name: Checkout the repo
     - uses: actions/cache@c64c572235d810460d0d6876e9c705ad5002b353
       name: Cache Poetry & Tox deps
-      if: ${{ !(matrix.os == 'windows-latest' && matrix.python-version == '3.6') }}
       with:
         path: |
           {{ matrix.path }}
diff --git a/poetry.lock b/poetry.lock
index 20908e8d..4cc5cea8 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -16,6 +16,7 @@ python-versions = ">=3.6.2"
 
 [package.dependencies]
 lazy-object-proxy = ">=1.4.0"
+setuptools = ">=20.0"
 typed-ast = {version = ">=1.4.0,<2.0", markers = "implementation_name == \"cpython\" and python_version < \"3.8\""}
 typing-extensions = {version = ">=3.10", markers = "python_version < \"3.10\""}
 wrapt = ">=1.11,<2"
@@ -37,10 +38,10 @@ optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [package.extras]
-dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "zope.interface", "furo", "sphinx", "sphinx-notfound-page", "pre-commit", "cloudpickle"]
-docs = ["furo", "sphinx", "zope.interface", "sphinx-notfound-page"]
-tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "zope.interface", "cloudpickle"]
-tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "cloudpickle"]
+dev = ["cloudpickle", "coverage[toml] (>=5.0.2)", "furo", "hypothesis", "mypy", "pre-commit", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins", "six", "sphinx", "sphinx-notfound-page", "zope.interface"]
+docs = ["furo", "sphinx", "sphinx-notfound-page", "zope.interface"]
+tests = ["cloudpickle", "coverage[toml] (>=5.0.2)", "hypothesis", "mypy", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins", "six", "zope.interface"]
+tests-no-zope = ["cloudpickle", "coverage[toml] (>=5.0.2)", "hypothesis", "mypy", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins", "six"]
 
 [[package]]
 name = "babel"
@@ -63,7 +64,6 @@ python-versions = ">=3.6.2"
 
 [package.dependencies]
 click = ">=8.0.0"
-dataclasses = {version = ">=0.6", markers = "python_version < \"3.7\""}
 mypy-extensions = ">=0.4.3"
 pathspec = ">=0.9.0"
 platformdirs = ">=2"
@@ -121,19 +121,7 @@ optional = true
 python-versions = ">=3.5.0"
 
 [package.extras]
-unicode_backport = ["unicodedata2"]
-
-[[package]]
-name = "click"
-version = "8.0.4"
-description = "Composable command line interface toolkit"
-category = "main"
-optional = false
-python-versions = ">=3.6"
-
-[package.dependencies]
-colorama = {version = "*", markers = "platform_system == \"Windows\""}
-importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
+unicode-backport = ["unicodedata2"]
 
 [[package]]
 name = "click"
@@ -180,14 +168,6 @@ toml = {version = "*", optional = true, markers = "extra == \"toml\""}
 [package.extras]
 toml = ["toml"]
 
-[[package]]
-name = "dataclasses"
-version = "0.8"
-description = "A backport of the dataclasses module for Python 3.6"
-category = "main"
-optional = false
-python-versions = ">=3.6, <3.7"
-
 [[package]]
 name = "dill"
 version = "0.3.4"
@@ -290,24 +270,9 @@ typing-extensions = {version = ">=3.6.4", markers = "python_version < \"3.8\""}
 zipp = ">=0.5"
 
 [package.extras]
-docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
+docs = ["jaraco.packaging (>=8.2)", "rst.linker (>=1.9)", "sphinx"]
 perf = ["ipython"]
-testing = ["pytest (>=6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "packaging", "pep517", "pyfakefs", "flufl.flake8", "pytest-perf (>=0.9.2)", "pytest-black (>=0.3.7)", "pytest-mypy", "importlib-resources (>=1.3)"]
-
-[[package]]
-name = "importlib-resources"
-version = "5.2.3"
-description = "Read resources from Python packages"
-category = "dev"
-optional = false
-python-versions = ">=3.6"
-
-[package.dependencies]
-zipp = {version = ">=3.1.0", markers = "python_version < \"3.10\""}
-
-[package.extras]
-docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
-testing = ["pytest (>=6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "pytest-black (>=0.3.7)", "pytest-mypy"]
+testing = ["flufl.flake8", "importlib-resources (>=1.3)", "packaging", "pep517", "pyfakefs", "pytest (>=6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=1.0.1)", "pytest-flake8", "pytest-mypy", "pytest-perf (>=0.9.2)"]
 
 [[package]]
 name = "iniconfig"
@@ -326,10 +291,10 @@ optional = false
 python-versions = ">=3.6.1,<4.0"
 
 [package.extras]
-pipfile_deprecated_finder = ["pipreqs", "requirementslib"]
-requirements_deprecated_finder = ["pipreqs", "pip-api"]
 colors = ["colorama (>=0.4.3,<0.5.0)"]
+pipfile-deprecated-finder = ["pipreqs", "requirementslib"]
 plugins = ["setuptools"]
+requirements-deprecated-finder = ["pip-api", "pipreqs"]
 
 [[package]]
 name = "jinja2"
@@ -461,7 +426,6 @@ python-versions = ">=3.6.1"
 cfgv = ">=2.0.0"
 identify = ">=1.0.0"
 importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
-importlib-resources = {version = "<5.3", markers = "python_version < \"3.7\""}
 nodeenv = ">=0.11.1"
 pyyaml = ">=5.1"
 toml = "*"
@@ -491,17 +455,6 @@ category = "main"
 optional = true
 python-versions = ">=3.5"
 
-[[package]]
-name = "pygit2"
-version = "1.6.1"
-description = "Python bindings for libgit2."
-category = "main"
-optional = false
-python-versions = "*"
-
-[package.dependencies]
-cffi = ">=1.4.0"
-
 [[package]]
 name = "pygit2"
 version = "1.9.1"
@@ -590,7 +543,7 @@ pytest = ">=4.6"
 toml = "*"
 
 [package.extras]
-testing = ["fields", "hunter", "process-tests", "six", "pytest-xdist", "virtualenv"]
+testing = ["fields", "hunter", "process-tests", "pytest-xdist", "six", "virtualenv"]
 
 [[package]]
 name = "pytest-sugar"
@@ -650,7 +603,20 @@ urllib3 = ">=1.21.1,<1.27"
 
 [package.extras]
 socks = ["PySocks (>=1.5.6,!=1.5.7)", "win-inet-pton"]
-use_chardet_on_py3 = ["chardet (>=3.0.2,<5)"]
+use-chardet-on-py3 = ["chardet (>=3.0.2,<5)"]
+
+[[package]]
+name = "setuptools"
+version = "65.5.1"
+description = "Easily download, build, install, upgrade, and uninstall Python packages"
+category = "dev"
+optional = false
+python-versions = ">=3.7"
+
+[package.extras]
+docs = ["furo", "jaraco.packaging (>=9)", "jaraco.tidelift (>=1.4)", "pygments-github-lexers (==0.0.5)", "rst.linker (>=1.9)", "sphinx (>=3.5)", "sphinx-favicon", "sphinx-hoverxref (<2)", "sphinx-inline-tabs", "sphinx-notfound-page (==0.8.3)", "sphinx-reredirects", "sphinxcontrib-towncrier"]
+testing = ["build[virtualenv]", "filelock (>=3.4.0)", "flake8 (<5)", "flake8-2020", "ini2toml[lite] (>=0.9)", "jaraco.envs (>=2.2)", "jaraco.path (>=3.2.0)", "pip (>=19.1)", "pip-run (>=8.8)", "pytest (>=6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=1.3)", "pytest-flake8", "pytest-mypy (>=0.9.1)", "pytest-perf", "pytest-timeout", "pytest-xdist", "tomli-w (>=1.0.0)", "virtualenv (>=13.0.0)", "wheel"]
+testing-integration = ["build[virtualenv]", "filelock (>=3.4.0)", "jaraco.envs (>=2.2)", "jaraco.path (>=3.2.0)", "pytest", "pytest-enabler", "pytest-xdist", "tomli", "virtualenv (>=13.0.0)", "wheel"]
 
 [[package]]
 name = "six"
@@ -705,8 +671,8 @@ sphinxcontrib-serializinghtml = ">=1.1.5"
 
 [package.extras]
 docs = ["sphinxcontrib-websupport"]
-lint = ["flake8 (>=3.5.0)", "isort", "mypy (>=0.931)", "docutils-stubs", "types-typed-ast", "types-requests"]
-test = ["pytest", "pytest-cov", "html5lib", "cython", "typed-ast"]
+lint = ["docutils-stubs", "flake8 (>=3.5.0)", "isort", "mypy (>=0.931)", "types-requests", "types-typed-ast"]
+test = ["cython", "html5lib", "pytest", "pytest-cov", "typed-ast"]
 
 [[package]]
 name = "sphinx-autodoc-typehints"
@@ -720,8 +686,8 @@ python-versions = ">=3.6"
 Sphinx = ">=3.0"
 
 [package.extras]
-test = ["pytest (>=3.1.0)", "typing-extensions (>=3.5)", "sphobjinv (>=2.0)", "Sphinx (>=3.2.0)", "dataclasses"]
-type_comments = ["typed-ast (>=1.4.0)"]
+test = ["Sphinx (>=3.2.0)", "dataclasses", "pytest (>=3.1.0)", "sphobjinv (>=2.0)", "typing-extensions (>=3.5)"]
+type-comments = ["typed-ast (>=1.4.0)"]
 
 [[package]]
 name = "sphinx-click"
@@ -749,7 +715,7 @@ docutils = "<0.18"
 sphinx = ">=1.6"
 
 [package.extras]
-dev = ["transifex-client", "sphinxcontrib-httpdomain", "bump2version"]
+dev = ["bump2version", "sphinxcontrib-httpdomain", "transifex-client"]
 
 [[package]]
 name = "sphinxcontrib-applehelp"
@@ -760,7 +726,7 @@ optional = true
 python-versions = ">=3.5"
 
 [package.extras]
-lint = ["flake8", "mypy", "docutils-stubs"]
+lint = ["docutils-stubs", "flake8", "mypy"]
 test = ["pytest"]
 
 [[package]]
@@ -772,7 +738,7 @@ optional = true
 python-versions = ">=3.5"
 
 [package.extras]
-lint = ["flake8", "mypy", "docutils-stubs"]
+lint = ["docutils-stubs", "flake8", "mypy"]
 test = ["pytest"]
 
 [[package]]
@@ -784,8 +750,8 @@ optional = true
 python-versions = ">=3.6"
 
 [package.extras]
-lint = ["flake8", "mypy", "docutils-stubs"]
-test = ["pytest", "html5lib"]
+lint = ["docutils-stubs", "flake8", "mypy"]
+test = ["html5lib", "pytest"]
 
 [[package]]
 name = "sphinxcontrib-jsmath"
@@ -796,7 +762,7 @@ optional = true
 python-versions = ">=3.5"
 
 [package.extras]
-test = ["pytest", "flake8", "mypy"]
+test = ["flake8", "mypy", "pytest"]
 
 [[package]]
 name = "sphinxcontrib-qthelp"
@@ -807,7 +773,7 @@ optional = true
 python-versions = ">=3.5"
 
 [package.extras]
-lint = ["flake8", "mypy", "docutils-stubs"]
+lint = ["docutils-stubs", "flake8", "mypy"]
 test = ["pytest"]
 
 [[package]]
@@ -819,7 +785,7 @@ optional = true
 python-versions = ">=3.5"
 
 [package.extras]
-lint = ["flake8", "mypy", "docutils-stubs"]
+lint = ["docutils-stubs", "flake8", "mypy"]
 test = ["pytest"]
 
 [[package]]
@@ -836,7 +802,7 @@ PyEnchant = ">=3.1.1"
 Sphinx = ">=3.0.0"
 
 [package.extras]
-test = ["pytest", "pytest-cov", "coverage (>=4.0,!=4.4)"]
+test = ["coverage (>=4.0,!=4.4)", "pytest", "pytest-cov"]
 
 [[package]]
 name = "termcolor"
@@ -891,7 +857,7 @@ virtualenv = ">=16.0.0,<20.0.0 || >20.0.0,<20.0.1 || >20.0.1,<20.0.2 || >20.0.2,
 
 [package.extras]
 docs = ["pygments-github-lexers (>=0.0.5)", "sphinx (>=2.0.0)", "sphinxcontrib-autoprogram (>=0.1.5)", "towncrier (>=18.5.0)"]
-testing = ["flaky (>=3.4.0)", "freezegun (>=0.3.11)", "pytest (>=4.0.0)", "pytest-cov (>=2.5.1)", "pytest-mock (>=1.10.0)", "pytest-randomly (>=1.0.0)", "psutil (>=5.6.1)", "pathlib2 (>=2.3.3)"]
+testing = ["flaky (>=3.4.0)", "freezegun (>=0.3.11)", "pathlib2 (>=2.3.3)", "psutil (>=5.6.1)", "pytest (>=4.0.0)", "pytest-cov (>=2.5.1)", "pytest-mock (>=1.10.0)", "pytest-randomly (>=1.0.0)"]
 
 [[package]]
 name = "typed-ast"
@@ -945,8 +911,8 @@ optional = true
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
 
 [package.extras]
-brotli = ["brotlicffi (>=0.8.0)", "brotli (>=1.0.9)", "brotlipy (>=0.6.0)"]
-secure = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "certifi", "ipaddress"]
+brotli = ["brotli (>=1.0.9)", "brotlicffi (>=0.8.0)", "brotlipy (>=0.6.0)"]
+secure = ["certifi", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "ipaddress", "pyOpenSSL (>=0.14)"]
 socks = ["PySocks (>=1.5.6,!=1.5.7,<2.0)"]
 
 [[package]]
@@ -961,13 +927,12 @@ python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
 distlib = ">=0.3.1,<1"
 filelock = ">=3.2,<4"
 importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
-importlib-resources = {version = ">=1.0", markers = "python_version < \"3.7\""}
 platformdirs = ">=2,<3"
 six = ">=1.9.0,<2"
 
 [package.extras]
 docs = ["proselint (>=0.10.2)", "sphinx (>=3)", "sphinx-argparse (>=0.2.5)", "sphinx-rtd-theme (>=0.4.3)", "towncrier (>=21.3)"]
-testing = ["coverage (>=4)", "coverage-enable-subprocess (>=1)", "flaky (>=3)", "pytest (>=4)", "pytest-env (>=0.6.2)", "pytest-freezegun (>=0.4.1)", "pytest-mock (>=2)", "pytest-randomly (>=1)", "pytest-timeout (>=1)", "packaging (>=20.0)"]
+testing = ["coverage (>=4)", "coverage-enable-subprocess (>=1)", "flaky (>=3)", "packaging (>=20.0)", "pytest (>=4)", "pytest-env (>=0.6.2)", "pytest-freezegun (>=0.4.1)", "pytest-mock (>=2)", "pytest-randomly (>=1)", "pytest-timeout (>=1)"]
 
 [[package]]
 name = "vulture"
@@ -997,16 +962,16 @@ optional = false
 python-versions = ">=3.6"
 
 [package.extras]
-docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
-testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "jaraco.itertools", "func-timeout", "pytest-black (>=0.3.7)", "pytest-mypy"]
+docs = ["jaraco.packaging (>=8.2)", "rst.linker (>=1.9)", "sphinx"]
+testing = ["func-timeout", "jaraco.itertools", "pytest (>=4.6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=1.0.1)", "pytest-flake8", "pytest-mypy"]
 
 [extras]
 docs = ["recommonmark", "sphinx", "sphinx-autodoc-typehints", "sphinx-click", "sphinx-rtd-theme", "sphinxcontrib-spelling"]
 
 [metadata]
 lock-version = "1.1"
-python-versions = "^3.6.2"
-content-hash = "76d48e62fa80585829933c1bdfd3a8936009d6b80edf6541b23625c67d06b56a"
+python-versions = "^3.7"
+content-hash = "353375d1019a8a2f8caf754f3ac87ce9a1d43840e8bc2e8329b4f673c5ba4e96"
 
 [metadata.files]
 alabaster = [
@@ -1123,8 +1088,6 @@ charset-normalizer = [
     {file = "charset_normalizer-2.0.12-py3-none-any.whl", hash = "sha256:6881edbebdb17b39b4eaaa821b438bf6eddffb4468cf344f09f89def34a8b1df"},
 ]
 click = [
-    {file = "click-8.0.4-py3-none-any.whl", hash = "sha256:6a7a62563bbfabfda3a38f3023a1db4a35978c0abd76f6c9605ecd6554d6d9b1"},
-    {file = "click-8.0.4.tar.gz", hash = "sha256:8458d7b1287c5fb128c90e23381cf99dcde74beaf6c7ff6384ce84d6fe090adb"},
     {file = "click-8.1.0-py3-none-any.whl", hash = "sha256:19a4baa64da924c5e0cd889aba8e947f280309f1a2ce0947a3e3a7bcb7cc72d6"},
     {file = "click-8.1.0.tar.gz", hash = "sha256:977c213473c7665d3aa092b41ff12063227751c41d7b17165013e10069cc5cd2"},
 ]
@@ -1190,10 +1153,6 @@ coverage = [
     {file = "coverage-5.5-pp37-none-any.whl", hash = "sha256:2a3859cb82dcbda1cfd3e6f71c27081d18aa251d20a17d87d26d4cd216fb0af4"},
     {file = "coverage-5.5.tar.gz", hash = "sha256:ebe78fe9a0e874362175b02371bdfbee64d8edc42a044253ddf4ee7d3c15212c"},
 ]
-dataclasses = [
-    {file = "dataclasses-0.8-py3-none-any.whl", hash = "sha256:0201d89fa866f68c8ebd9d08ee6ff50c0b255f8ec63a71c16fda7af82bb887bf"},
-    {file = "dataclasses-0.8.tar.gz", hash = "sha256:8479067f342acf957dc82ec415d355ab5edb7e7646b90dc6e2fd1d96ad084c97"},
-]
 dill = [
     {file = "dill-0.3.4-py2.py3-none-any.whl", hash = "sha256:7e40e4a70304fd9ceab3535d36e58791d9c4a776b38ec7f7ec9afc8d3dca4d4f"},
     {file = "dill-0.3.4.zip", hash = "sha256:9f9734205146b2b353ab3fec9af0070237b6ddae78452af83d2fca84d739e675"},
@@ -1234,10 +1193,6 @@ importlib-metadata = [
     {file = "importlib_metadata-4.8.3-py3-none-any.whl", hash = "sha256:65a9576a5b2d58ca44d133c42a241905cc45e34d2c06fd5ba2bafa221e5d7b5e"},
     {file = "importlib_metadata-4.8.3.tar.gz", hash = "sha256:766abffff765960fcc18003801f7044eb6755ffae4521c8e8ce8e83b9c9b0668"},
 ]
-importlib-resources = [
-    {file = "importlib_resources-5.2.3-py3-none-any.whl", hash = "sha256:ae35ed1cfe8c0d6c1a53ecd168167f01fa93b893d51a62cdf23aea044c67211b"},
-    {file = "importlib_resources-5.2.3.tar.gz", hash = "sha256:203d70dda34cfbfbb42324a8d4211196e7d3e858de21a5eb68c6d1cdd99e4e98"},
-]
 iniconfig = [
     {file = "iniconfig-1.1.1-py2.py3-none-any.whl", hash = "sha256:011e24c64b7f47f6ebd835bb12a743f2fbe9a26d4cecaa7f53bc4f35ee9da8b3"},
     {file = "iniconfig-1.1.1.tar.gz", hash = "sha256:bc3af051d7d14b2ee5ef9969666def0cd1a000e121eaea580d4a313df4b37f32"},
@@ -1432,27 +1387,6 @@ pyenchant = [
     {file = "pyenchant-3.2.2.tar.gz", hash = "sha256:1cf830c6614362a78aab78d50eaf7c6c93831369c52e1bb64ffae1df0341e637"},
 ]
 pygit2 = [
-    {file = "pygit2-1.6.1-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:547429774c11f5bc9d20a49aa86e4bd13c90a55140504ef05f55cf424470ee34"},
-    {file = "pygit2-1.6.1-cp36-cp36m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:4e75865d7b6fc161d93b16f10365eaad353cd546e302a98f2de2097ddea1066b"},
-    {file = "pygit2-1.6.1-cp36-cp36m-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:be4a64b6090308ffd1c82e2dd4316cb79483715387b13818156d516134a5b17c"},
-    {file = "pygit2-1.6.1-cp36-cp36m-win32.whl", hash = "sha256:2666a3970b2ea1222a9f0463b466f98c8d564f29ec84cf0a58d9b0d3865dbaaf"},
-    {file = "pygit2-1.6.1-cp36-cp36m-win_amd64.whl", hash = "sha256:b2de12ca2d3b7eb86106223b40b2edc0c61103c71e7962e53092c6ddef71a194"},
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-    {file = "pygit2-1.6.1-cp37-cp37m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:454d42550fa6a6cd0e6a6ad9ab3f3262135fd157f57bad245ce156c36ee93370"},
-    {file = "pygit2-1.6.1-cp37-cp37m-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:ce0827b77dd2f8a3465bdc181c4e65f27dd12dbd92635c038e58030cc90c2de0"},
-    {file = "pygit2-1.6.1-cp37-cp37m-win32.whl", hash = "sha256:b0161a141888d450eb821472fdcdadd14a072ddeda841fee9984956d34d3e19d"},
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-    {file = "pygit2-1.6.1-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:ef07458e4172a31318663295083b43f957d611145738ff56aa76db593542a6e8"},
-    {file = "pygit2-1.6.1-cp38-cp38-win32.whl", hash = "sha256:7a0c0a1f11fd41f57e8c6c64d903cc7fa4ec95d15592270be3217ed7f78eb023"},
-    {file = "pygit2-1.6.1-cp38-cp38-win_amd64.whl", hash = "sha256:2fd5c1b2d84dc6084f1bda836607afe37e95186a53a5a827a69083415e57fe4f"},
-    {file = "pygit2-1.6.1-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:b9b88b7e9a5286a71be0b6c307f0523c9606aeedff6b61eb9c440e18817fa641"},
-    {file = "pygit2-1.6.1-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:ac12d32b714c3383ebccffee5eb6aff0b69a2542a40a664fd5ad370afcb28ee7"},
-    {file = "pygit2-1.6.1-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:fe682ed6afd2ab31127f6a502cf3e002dc1cc8d26c36a5d49dfd180250351eb6"},
-    {file = "pygit2-1.6.1-cp39-cp39-win32.whl", hash = "sha256:dbbf66a23860aa899949068ac9b503b4bc21e6063e8f53870440adbdc909405e"},
-    {file = "pygit2-1.6.1-cp39-cp39-win_amd64.whl", hash = "sha256:f90775afb11f69376e2af21ab56fcfbb52f6bc84117059ddf0355f81e5e36352"},
-    {file = "pygit2-1.6.1.tar.gz", hash = "sha256:c3303776f774d3e0115c1c4f6e1fc35470d15f113a7ae9401a0b90acfa1661ac"},
     {file = "pygit2-1.9.1-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:2656ec2576151eeeba8a85fae935c755b06e33e3da8bad049dc590217faee2fa"},
     {file = "pygit2-1.9.1-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:073c4c20c1c3ce8941957fa3b8044dd03c9776b48b5ab81f859fc9241a276176"},
     {file = "pygit2-1.9.1-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:143a4e12f52d9d7be4c60d7f5e6d1770220e67e48e0f7c4e6cee9d0a6a2078aa"},
@@ -1519,6 +1453,13 @@ pyyaml = [
     {file = "PyYAML-6.0-cp310-cp310-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:f84fbc98b019fef2ee9a1cb3ce93e3187a6df0b2538a651bfb890254ba9f90b5"},
     {file = "PyYAML-6.0-cp310-cp310-win32.whl", hash = "sha256:2cd5df3de48857ed0544b34e2d40e9fac445930039f3cfe4bcc592a1f836d513"},
     {file = "PyYAML-6.0-cp310-cp310-win_amd64.whl", hash = "sha256:daf496c58a8c52083df09b80c860005194014c3698698d1a57cbcfa182142a3a"},
+    {file = "PyYAML-6.0-cp311-cp311-macosx_10_9_x86_64.whl", hash = "sha256:d4b0ba9512519522b118090257be113b9468d804b19d63c71dbcf4a48fa32358"},
+    {file = "PyYAML-6.0-cp311-cp311-macosx_11_0_arm64.whl", hash = "sha256:81957921f441d50af23654aa6c5e5eaf9b06aba7f0a19c18a538dc7ef291c5a1"},
+    {file = "PyYAML-6.0-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:afa17f5bc4d1b10afd4466fd3a44dc0e245382deca5b3c353d8b757f9e3ecb8d"},
+    {file = "PyYAML-6.0-cp311-cp311-manylinux_2_17_s390x.manylinux2014_s390x.whl", hash = "sha256:dbad0e9d368bb989f4515da330b88a057617d16b6a8245084f1b05400f24609f"},
+    {file = "PyYAML-6.0-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:432557aa2c09802be39460360ddffd48156e30721f5e8d917f01d31694216782"},
+    {file = "PyYAML-6.0-cp311-cp311-win32.whl", hash = "sha256:bfaef573a63ba8923503d27530362590ff4f576c626d86a9fed95822a8255fd7"},
+    {file = "PyYAML-6.0-cp311-cp311-win_amd64.whl", hash = "sha256:01b45c0191e6d66c470b6cf1b9531a771a83c1c4208272ead47a3ae4f2f603bf"},
     {file = "PyYAML-6.0-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:897b80890765f037df3403d22bab41627ca8811ae55e9a722fd0392850ec4d86"},
     {file = "PyYAML-6.0-cp36-cp36m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:50602afada6d6cbfad699b0c7bb50d5ccffa7e46a3d738092afddc1f9758427f"},
     {file = "PyYAML-6.0-cp36-cp36m-manylinux_2_17_s390x.manylinux2014_s390x.whl", hash = "sha256:48c346915c114f5fdb3ead70312bd042a953a8ce5c7106d5bfb1a5254e47da92"},
@@ -1554,6 +1495,10 @@ requests = [
     {file = "requests-2.27.1-py2.py3-none-any.whl", hash = "sha256:f22fa1e554c9ddfd16e6e41ac79759e17be9e492b3587efa038054674760e72d"},
     {file = "requests-2.27.1.tar.gz", hash = "sha256:68d7c56fd5a8999887728ef304a6d12edc7be74f1cfa47714fc8b414525c9a61"},
 ]
+setuptools = [
+    {file = "setuptools-65.5.1-py3-none-any.whl", hash = "sha256:d0b9a8433464d5800cbe05094acf5c6d52a91bfac9b52bcfc4d41382be5d5d31"},
+    {file = "setuptools-65.5.1.tar.gz", hash = "sha256:e197a19aa8ec9722928f2206f8de752def0e4c9fc6953527360d1c36d94ddb2f"},
+]
 six = [
     {file = "six-1.16.0-py2.py3-none-any.whl", hash = "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"},
     {file = "six-1.16.0.tar.gz", hash = "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926"},
diff --git a/pyproject.toml b/pyproject.toml
index 849a586d..53631b9f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,6 @@ classifiers = [
   "Natural Language :: English",
   "Operating System :: OS Independent",
   "Programming Language :: Python",
-  "Programming Language :: Python :: 3.6",
   "Programming Language :: Python :: 3.7",
   "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
@@ -39,11 +38,11 @@ tartufo = "tartufo.cli:main"
 
 [tool.poetry.dependencies]
 GitPython = "<3.1.20"
-pygit2 = [ {version = "~1.6", python = "~3.6"}, {version = "^1.9.0", python = "^3.7"} ]
-click = [{version = "~8.0.4", python = "~3.6"}, {version = "^8.1.0", python = "^3.7"}]
+pygit2 = [{version = "^1.9.0", python = "^3.7"}]
+click = [{version = "^8.1.0", python = "^3.7"}]
 colorama = {version = "*", markers = "sys_platform == 'win32'"}
 dataclasses = {version = "*", python = "< 3.7"}
-python = "^3.6.2"
+python = "^3.7"
 recommonmark = {version = "^0.6", optional = true}
 sphinx = {version = "^4.3.1", optional = true}
 sphinx-autodoc-typehints = {version = "^1.12.0", optional = true}
diff --git a/tox.ini b/tox.ini
index 338d4f58..5978453f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,13 +2,12 @@
 minversion = 3.7.0
 toxworkdir = {env:TOX_WORK_DIR:.tox}
 skip_missing_interpreters = True
-envlist = py{36,37,38,39,py3,310},black,mypy,pylint,vulture,docs
+envlist = py{37,38,39,py3,310},black,mypy,pylint,vulture,docs
 parallel_show_output = True
 isolated_build = True
 
 [gh-actions]
 python =
-    3.6: py36
     3.7: py37
     3.8: py38
     3.9: py39