diff --git a/third_party/tools/yosys b/third_party/tools/yosys
index 9f7cdd4bd4f3..1ccbd21ed8d8 160000
--- a/third_party/tools/yosys
+++ b/third_party/tools/yosys
@@ -1 +1 @@
-Subproject commit 9f7cdd4bd4f39665229f12bc79881c8564509517
+Subproject commit 1ccbd21ed8d85895d4153227f2cd5160c63dbd9c