diff --git a/mcu-contrib/default.nix b/mcu-contrib/default.nix
index 5190326..8073d86 100644
--- a/mcu-contrib/default.nix
+++ b/mcu-contrib/default.nix
@@ -67,9 +67,6 @@ in
         patch -p1 < ${./pounder-725.diff}
       '';
       doCheck = false;
-      outputHashes = {
-        "menu-0.6.0" = "sha256-Zilj27J4a/T/Je2qJr6igFj2OEw0/4fU4f0t+afm4TY=";
-      };
     } // value))) {
       dual-iir = {};
       dual-iir-pounder_v1_0 = {