diff --git a/source/symbiflow-arch-defs b/source/symbiflow-arch-defs
index 6f9c691..a51bd8c 160000
--- a/source/symbiflow-arch-defs
+++ b/source/symbiflow-arch-defs
@@ -1 +1 @@
-Subproject commit 6f9c6918359f4991e9f2dc9abb7c355bc559db1b
+Subproject commit a51bd8c08c4b3bd6ad7b8eac5baafee0eca15b7e