diff --git a/nix/sources.json b/nix/sources.json
index d05993b..d23d445 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -17,10 +17,10 @@
         "homepage": "",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "75c1664b444ff3be4d7828a120500dcaa5bce0d4",
-        "sha256": "0n5gsqh7a5s6bw3vaak5sg7rlyb9ypy7pjfc1rij8ygs4wh1b196",
+        "rev": "70904d4a9927a4d6e05c72c4aaac4370e05107f3",
+        "sha256": "08vvir0npyrdx85ypiannwzvyryqdw3749bghffhdsq2dgz1cx8z",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/75c1664b444ff3be4d7828a120500dcaa5bce0d4.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/70904d4a9927a4d6e05c72c4aaac4370e05107f3.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     }
 }