diff --git a/yosys b/yosys
index cd8e6cbc6..606bbef30 160000
--- a/yosys
+++ b/yosys
@@ -1 +1 @@
-Subproject commit cd8e6cbc64621557e3d53485bd8ef8d76ca9abb5
+Subproject commit 606bbef30c391b280e35a8c8354b4d440e62ec64