diff --git a/flake.nix b/flake.nix
index ff04762d0e8..d6366ee9807 100644
--- a/flake.nix
+++ b/flake.nix
@@ -65,6 +65,7 @@
           [
             "--enable-toolchains"
             "--enable-pkg-build-progress"
+            "--enable-lock-dev-tool"
           ];
       };