diff --git a/tools/yosys b/tools/yosys
index 30cb72a162..9ed031ddd5 160000
--- a/tools/yosys
+++ b/tools/yosys
@@ -1 +1 @@
-Subproject commit 30cb72a1623456dbea578f44a78dfe7ab31ef510
+Subproject commit 9ed031ddd588442f22be13ce608547a5809b62f0