diff --git a/third_party/yosys b/third_party/yosys
index ed46453..171577f 160000
--- a/third_party/yosys
+++ b/third_party/yosys
@@ -1 +1 @@
-Subproject commit ed46453cfc3032d28246e81d93bfb8a8c65f826e
+Subproject commit 171577f909cd0ecc33d879a8925d70f6c9ca8f1e