diff --git a/yosys b/yosys
index 3a9968de9..e664dd4f3 160000
--- a/yosys
+++ b/yosys
@@ -1 +1 @@
-Subproject commit 3a9968de914973f65928b724e889b134f8a4f2ae
+Subproject commit e664dd4f34bfac7fca18939d9abf064f5790e0cf