diff --git a/third_party/yosys b/third_party/yosys
index c03b6a3e..81e6b040 160000
--- a/third_party/yosys
+++ b/third_party/yosys
@@ -1 +1 @@
-Subproject commit c03b6a3e9cab9fc05b2d5b256676f5ddc6c2d763
+Subproject commit 81e6b040a4e9a6c8def9c4d68851e2a1f9328ed8