diff --git a/nix/sources.json b/nix/sources.json
index a77cbfd..3c43a43 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -50,10 +50,10 @@
         "homepage": "",
         "owner": "hexchen",
         "repo": "nixpkgs",
-        "rev": "bead59538251fcf1ad826b497b40395b65ee58ea",
-        "sha256": "0ybv6w35b7wr5pzdgs0vxv9nw3fszc182s4wvsdavwssvih0s3pd",
+        "rev": "a4934d34a8037e3a35acfe3955778ca4f217598f",
+        "sha256": "079k8cscigd5pz704czglybidaz6kg402vkqpvrldavpr4fmj6yv",
         "type": "tarball",
-        "url": "https://github.com/hexchen/nixpkgs/archive/bead59538251fcf1ad826b497b40395b65ee58ea.tar.gz",
+        "url": "https://github.com/hexchen/nixpkgs/archive/a4934d34a8037e3a35acfe3955778ca4f217598f.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixpkgs-unstable": {