diff --git a/nix/sources.json b/nix/sources.json
index 2203af0..af9ba8c 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -41,10 +41,10 @@
         "homepage": "",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "9606c663324d64b89b099c1114646e4f08a566ad",
-        "sha256": "1figpjjgj1lsqam17ps22yav2wdxiyp9al1jwz39nj256zmkpyrn",
+        "rev": "34f85de51bbc74595e63b22ee089adbb31f7c7a2",
+        "sha256": "1k44md0l7glwvmf8wryw91i7qr0qq8wp7jfnbixdlyjzlxkfd26d",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/9606c663324d64b89b099c1114646e4f08a566ad.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": {