diff --git a/nixpkgs.json b/nixpkgs.json
index 015223adb2baa4a27d2ffffb36cfe58597fd4b4f..e39b8db1656462fbc070381d0f3e335d42ee568f 100644
--- a/nixpkgs.json
+++ b/nixpkgs.json
@@ -1,5 +1,5 @@
 {
   "name": "source",
-  "url": "https://releases.nixos.org/nixos/21.11/nixos-21.11.336589.2c66a7a6e03/nixexprs.tar.xz",
-  "sha256": "1yrgg568blb0syac5w4ca7ml92nggh5fbdbw0r10iglnliljy6m5"
+  "url": "https://releases.nixos.org/nixos/21.11/nixos-21.11.336673.d89f18a17e5/nixexprs.tar.xz",
+  "sha256": "0nxiknccz0d8d2m15rwkhbvyr84k5s56nq8p6shg8z007pcgrrnd"
 }
\ No newline at end of file