diff --git a/default.nix b/default.nix
index d5a2e32..b8e9828 100644
--- a/default.nix
+++ b/default.nix
@@ -31,11 +31,6 @@
                 value = "${pr.head.repo.clone_url} ${pr.head.ref}";
                 emailresponsible = false;
               };
-              nixpkgs = {
-                type = "git";
-                value = "https://github.com/NixOS/nixpkgs.git";
-                emailresponsible = false;
-              };
             }
             // (
               if hasPrefix "https://git.chir.rs/" pr.head.repo.clone_url