diff --git a/bsc/osu/default.nix b/bsc/osu/default.nix
index d8bf07f8..4026a7d2 100644
--- a/bsc/osu/default.nix
+++ b/bsc/osu/default.nix
@@ -1,7 +1,8 @@
 {
-  stdenv,
-  fetchurl,
-  mpi
+  stdenv
+, fetchurl
+, mpi
+, lib
 }:
 
 stdenv.mkDerivation rec {