diff --git a/flake.nix b/flake.nix
index 3b06a362..9bc41c1c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -71,6 +71,7 @@
     extra-trusted-public-keys = [
       "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
     ];
+    allow-import-from-derivation = false;
   };
 
   outputs =