diff --git a/rust.spec b/rust.spec
index a8663bf..f49ab7e 100644
--- a/rust.spec
+++ b/rust.spec
@@ -396,6 +396,7 @@ chmod +x src/libcore/unicode/printable.py
   %{debug_info} \
   %{codegen_units} \
   --enable-vendor \
+  --enable-extended \
   --tools="cargo","rls","clippy","rustfmt","analysis","src" \
   --release-channel="stable"