diff --git a/tools/yosys b/tools/yosys
index a5af9d690a..9ed031ddd5 160000
--- a/tools/yosys
+++ b/tools/yosys
@@ -1 +1 @@
-Subproject commit a5af9d690a43744bf6b2cc3dea2717c16b54621c
+Subproject commit 9ed031ddd588442f22be13ce608547a5809b62f0