diff --git a/modules/nix/default.nix b/modules/nix/default.nix
index 26f40d5..e8dedc8 100644
--- a/modules/nix/default.nix
+++ b/modules/nix/default.nix
@@ -41,7 +41,7 @@
     nixPath = [ "nixpkgs=${fleetFlake.inputs.nixpkgs}" ];
 
     extraOptions = ''
-      experimental-features = nix-command flakes impure-derivations
+      experimental-features = nix-command flakes
       builders-use-substitutes = true
     '';