diff --git a/nix/sources.json b/nix/sources.json
index 9a0b696..2062674 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -5,10 +5,10 @@
         "homepage": "https://github.com/nmattia/niv",
         "owner": "nmattia",
         "repo": "niv",
-        "rev": "82e5cd1ad3c387863f0545d7591512e76ab0fc41",
-        "sha256": "090l219mzc0gi33i3psgph6s2pwsc8qy4lyrqjdj4qzkvmaj65a7",
+        "rev": "f9760c0aaebc24c47f350d2e580b2c56716b0410",
+        "sha256": "0i12f1yszmnxlm3as8yd3jlc84mknp3n1r3njzhsznvkk7y2pzcn",
         "type": "tarball",
-        "url": "https://github.com/nmattia/niv/archive/82e5cd1ad3c387863f0545d7591512e76ab0fc41.tar.gz",
+        "url": "https://github.com/nmattia/niv/archive/f9760c0aaebc24c47f350d2e580b2c56716b0410.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nix-medley": {
@@ -29,10 +29,10 @@
         "homepage": "",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "c777cdf5c564015d5f63b09cc93bef4178b19b01",
-        "sha256": "0r2xhflcy5agaz4a3b8pxiyiwh32s1kl3swv73flnj1x3v69s8bm",
+        "rev": "06cf0e1da4208d3766d898b7fdab6513366d45b9",
+        "sha256": "0l68zz8mn2kvp9wvc6rgw7dns8vkl7w9y6z92blvgn1wnm9ib6ab",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/c777cdf5c564015d5f63b09cc93bef4178b19b01.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/06cf0e1da4208d3766d898b7fdab6513366d45b9.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     }
 }