diff --git a/nixpkgs.json b/nixpkgs.json
index d2a4df10315e4fcce6118cab40ee2d9dc3edcf50..7d7d3889bc8f503053dc6836524959131e83ae20 100644
--- a/nixpkgs.json
+++ b/nixpkgs.json
@@ -1,5 +1,5 @@
 {
   "name": "source",
-  "url": "https://releases.nixos.org/nixos/21.11/nixos-21.11.337209.c254b8c915a/nixexprs.tar.xz",
-  "sha256": "1rh1bw1hl94cqxgx7rf0s31w58dmib8av2gkw5ih80sbsshmyf61"
+  "url": "https://releases.nixos.org/nixos/21.11/nixos-21.11.337635.cbd40c72b26/nixexprs.tar.xz",
+  "sha256": "0da85l3kkd7pszhxzn8xygz32cwf8krcb4ywfpmh48hqbb7y11i5"
 }
\ No newline at end of file