diff --git a/source/symbiflow-arch-defs b/source/symbiflow-arch-defs
index 552d428..666a8dc 160000
--- a/source/symbiflow-arch-defs
+++ b/source/symbiflow-arch-defs
@@ -1 +1 @@
-Subproject commit 552d4289ca9f21d401ccbb4587b11f0d63a39752
+Subproject commit 666a8dc61965d4be0d6248e90ae68b708a886a05