diff --git a/tools/yosys b/tools/yosys
index 75eff54b31..9ed031ddd5 160000
--- a/tools/yosys
+++ b/tools/yosys
@@ -1 +1 @@
-Subproject commit 75eff54b316911f8a9aba6c8cb5c6637b76f2956
+Subproject commit 9ed031ddd588442f22be13ce608547a5809b62f0