diff --git a/nix/sources.json b/nix/sources.json
index 95bac37..bd479fa 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -5,10 +5,10 @@
         "homepage": "",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "b7c2ada94fe99c15b0dbcf4d11fd7850b957a436",
-        "sha256": "1hw875y585lkhygn09kcbmdgm58b0nb5k0d38qwlvfngprsnp2r0",
+        "rev": "ffb3c9b700e759be2ef13237c9d8f953b32a1e46",
+        "sha256": "0h1nqp7vdqqivfc8fimdc6rmjyrnjlsmd28zxbl1iy46c0ss8ga4",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/b7c2ada94fe99c15b0dbcf4d11fd7850b957a436.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/ffb3c9b700e759be2ef13237c9d8f953b32a1e46.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "olderIdeaNixpkgs": {