diff --git a/nix/sources.json b/nix/sources.json
index 6d1fffd..559f98b 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -5,10 +5,10 @@
         "homepage": "",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "4a729ce4b1fe5ec4fffc71c67c96aa5184ebb462",
-        "sha256": "130qhasfvyvvb3rbmjd118j4grz8dylxsfqqj61w3ap2f3420lsl",
+        "rev": "6cee3b5893090b0f5f0a06b4cf42ca4e60e5d222",
+        "sha256": "088yi2181nfyxalkg0g84jv4jcmxclihnrcaywfmxqzz61vr8x4f",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/4a729ce4b1fe5ec4fffc71c67c96aa5184ebb462.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/6cee3b5893090b0f5f0a06b4cf42ca4e60e5d222.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "olderIdeaNixpkgs": {