diff --git a/yosys b/yosys
index 8f7a9a0b6..f9257d319 160000
--- a/yosys
+++ b/yosys
@@ -1 +1 @@
-Subproject commit 8f7a9a0b667031d661cd91a66c5dcab39eb470d6
+Subproject commit f9257d319271917aac30f7bfb4f5b154ff559b18