diff --git a/yosys b/yosys
index b739213d9..73cb4977b 160000
--- a/yosys
+++ b/yosys
@@ -1 +1 @@
-Subproject commit b739213d9f00b409ef7b9a9e1834d659ea8008d9
+Subproject commit 73cb4977b2e493b840b23419919a63be7c83e6df