diff --git a/third_party/yosys b/third_party/yosys
index fa0c31186..4581f75b0 160000
--- a/third_party/yosys
+++ b/third_party/yosys
@@ -1 +1 @@
-Subproject commit fa0c3118626ab67d8b32ba2516953af8181c960d
+Subproject commit 4581f75b03a25b615a9715516854c424b580f7ab