diff --git a/flake.nix b/flake.nix
index 837f6d6..64a1515 100644
--- a/flake.nix
+++ b/flake.nix
@@ -135,7 +135,7 @@
             inherit username;
             system = "x86_64-linux";
             homeDirectory = "/home/${username}";
-            stateVersion = "21.05";
+            stateVersion = extended-lib.mkDefault "21.05";
           });
 
       outputsBuilder = channels: {