diff --git a/third_party/yosys b/third_party/yosys
index f2c68940..956c4e48 160000
--- a/third_party/yosys
+++ b/third_party/yosys
@@ -1 +1 @@
-Subproject commit f2c689403ace0637b7455bac8f1e8d4bc312e74f
+Subproject commit 956c4e485a9463863f60c4dd03372db3fa8332a4