diff --git a/pkgs/by-name/uu/uuu/package.nix b/pkgs/by-name/uu/uuu/package.nix
index 6ddf35a37b2f..5f6bdfe368bf 100644
--- a/pkgs/by-name/uu/uuu/package.nix
+++ b/pkgs/by-name/uu/uuu/package.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation (finalAttrs: {
   passthru.updateScript = nix-update-script {
     extraArgs = [
       "--version-regex"
-      "uuu_\([0-9.]+\)"
+      "uuu_\\([0-9.]+\\)"
     ];
   };