diff --git a/yosys b/yosys
index 0200a7680..3f4f6c17d 160000
--- a/yosys
+++ b/yosys
@@ -1 +1 @@
-Subproject commit 0200a7680a2d012e7737b01f07ec354b1bddf602
+Subproject commit 3f4f6c17d6fb2a9548c935a8e4c73af5fa326015