diff --git a/yosys b/yosys
index cbd3ff2d3..4a475fa7a 160000
--- a/yosys
+++ b/yosys
@@ -1 +1 @@
-Subproject commit cbd3ff2d3a8d29fda2d796e4db5feb384990812c
+Subproject commit 4a475fa7a2788679b4c575dc3c1231a065d35271