diff --git a/source/symbiflow-arch-defs b/source/symbiflow-arch-defs
index 5da08fb..21fe508 160000
--- a/source/symbiflow-arch-defs
+++ b/source/symbiflow-arch-defs
@@ -1 +1 @@
-Subproject commit 5da08fb5eedbafe2f8ed293ba108f94d89322e2f
+Subproject commit 21fe508ba408a06acc9dc4ce6c9efcdae5eba71d