diff --git a/nix/sources.json b/nix/sources.json
index 3147bf5..c6bd6ef 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -5,10 +5,10 @@
         "homepage": "",
         "owner": "hercules-ci",
         "repo": "gitignore",
-        "rev": "c4662e662462e7bf3c2a968483478a665d00e717",
-        "sha256": "1npnx0h6bd0d7ql93ka7azhj40zgjp815fw2r6smg8ch9p7mzdlx",
+        "rev": "211907489e9f198594c0eb0ca9256a1949c9d412",
+        "sha256": "06j7wpvj54khw0z10fjyi31kpafkr6hi1k0di13k1xp8kywvfyx8",
         "type": "tarball",
-        "url": "https://github.com/hercules-ci/gitignore/archive/c4662e662462e7bf3c2a968483478a665d00e717.tar.gz",
+        "url": "https://github.com/hercules-ci/gitignore/archive/211907489e9f198594c0eb0ca9256a1949c9d412.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "niv": {
@@ -17,10 +17,10 @@
         "homepage": "https://github.com/nmattia/niv",
         "owner": "nmattia",
         "repo": "niv",
-        "rev": "20c899271f288d33114760bc298838575fc6c7f9",
-        "sha256": "07zswk6dhlydihl9g6skmy52grjvqpra8r98f2dmbgwzc1yhjhxq",
+        "rev": "94080ae8286024820c570a2a24ed7c36d7ad04a9",
+        "sha256": "0wlk52zwlrq727x3z1vg9d9qq4zw62ab5jzg4068iqb6hyb0cr0w",
         "type": "tarball",
-        "url": "https://github.com/nmattia/niv/archive/20c899271f288d33114760bc298838575fc6c7f9.tar.gz",
+        "url": "https://github.com/nmattia/niv/archive/94080ae8286024820c570a2a24ed7c36d7ad04a9.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixpkgs": {
@@ -29,10 +29,10 @@
         "homepage": null,
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "d2f46002829c80756f19a36abd58a3a25f0cc202",
-        "sha256": "0b3vi7yz5zxjfbvi5x6xnskbyg76dzw4yljh51qsmhb63ijj60s5",
+        "rev": "1db42b7fe3878f3f5f7a4f2dc210772fd080e205",
+        "sha256": "05k9y9ki6jhaqdhycnidnk5zrdzsdammbk5lsmsbz249hjhhgcgh",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/d2f46002829c80756f19a36abd58a3a25f0cc202.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/1db42b7fe3878f3f5f7a4f2dc210772fd080e205.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     }
 }