diff --git a/packages/simplesamlphptheme/default.nix b/packages/simplesamlphptheme/default.nix
index 7c3b24a..4f2576f 100644
--- a/packages/simplesamlphptheme/default.nix
+++ b/packages/simplesamlphptheme/default.nix
@@ -1,5 +1,6 @@
 { lib
 , php
+, stdenv
 , writeText
 , fetchFromGitea
 , extra_files ? { }