diff --git a/nix/sources.json b/nix/sources.json
index 6c19a74..f43f530 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -44,10 +44,10 @@
         "homepage": "",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "d395190b24b27a65588f4539c423d9807ad8d4e7",
-        "sha256": "0r1kj8gf97z9ydh36vmgrar1q4l9ggaqiygxjvp8jmr1948y0nh2",
+        "rev": "34f85de51bbc74595e63b22ee089adbb31f7c7a2",
+        "sha256": "1k44md0l7glwvmf8wryw91i7qr0qq8wp7jfnbixdlyjzlxkfd26d",
         "type": "tarball",
-        "url": "https://github.com/nixos/nixpkgs/archive/d395190b24b27a65588f4539c423d9807ad8d4e7.tar.gz",
+        "url": "https://github.com/nixos/nixpkgs/archive/34f85de51bbc74595e63b22ee089adbb31f7c7a2.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixpkgs-unstable": {