diff --git a/nixpkgs.json b/nixpkgs.json
index 2b82e91ace10331fb8a2e87f4e5f95ccc86cf93e..c23e97277000b2ae9346f96c180a6ea933cd9043 100644
--- a/nixpkgs.json
+++ b/nixpkgs.json
@@ -1,5 +1,5 @@
 {
   "name": "source",
-  "url": "https://releases.nixos.org/nixos/21.11/nixos-21.11.337967.573603b7fdb/nixexprs.tar.xz",
-  "sha256": "1f0lbz654c87ba0f3vxmzfkarcqxb9j2nik9knq15ndbqvpdyvvc"
+  "url": "https://releases.nixos.org/nixos/21.11/nixos-21.11.337971.a1fe662eb26/nixexprs.tar.xz",
+  "sha256": "0insm3dm8k2mq5k5fs78lnfrx0da7v466mznbyk0534qr66fmf9w"
 }
\ No newline at end of file