diff --git a/source/symbiflow-arch-defs b/source/symbiflow-arch-defs
index 48d2f49..31e66fb 160000
--- a/source/symbiflow-arch-defs
+++ b/source/symbiflow-arch-defs
@@ -1 +1 @@
-Subproject commit 48d2f498765909e5376e76bc8929744886a86659
+Subproject commit 31e66fb74c760e2d35cc5be8f99fff0fdd670a48