diff --git a/mcu/rustPlatform.nix b/mcu/rustPlatform.nix
index 3479dfe..435194d 100644
--- a/mcu/rustPlatform.nix
+++ b/mcu/rustPlatform.nix
@@ -10,7 +10,7 @@ let
   ];
   rustChannel =
     lib.rustLib.fromManifestFile rustManifest {
-      inherit stdenv fetchurl patchelf;
+      inherit stdenv lib fetchurl patchelf;
     };
   rust =
     rustChannel.rust.override {