diff --git a/package.env/00compiler b/package.env/00compiler
index 4b9edb3..6c435c2 100644
--- a/package.env/00compiler
+++ b/package.env/00compiler
@@ -1,5 +1,5 @@
 # */* clang-19 mold
-*/* clang-20 mold
+*/* clang-20 mold lto-werror
 
 sys-devel/gcc gcc