diff --git a/third_party/yosys b/third_party/yosys
index 0917a5cf..39f4c109 160000
--- a/third_party/yosys
+++ b/third_party/yosys
@@ -1 +1 @@
-Subproject commit 0917a5cf720e76a85cd2fa4d8cd3cf9434bdee8f
+Subproject commit 39f4c1096ac3b5964bfa087c2b7f2e8d5a9c1ef3