diff --git a/third_party/yosys b/third_party/yosys
index 6f3376cbe..f4ddbc399 160000
--- a/third_party/yosys
+++ b/third_party/yosys
@@ -1 +1 @@
-Subproject commit 6f3376cbe6dbd1e1513facc28930e837798c94e3
+Subproject commit f4ddbc3994be8b55bc0e917b8d2be283f1200963