diff --git a/source/vtr-verilog-to-routing b/source/vtr-verilog-to-routing
index 136ecda..b4ac6ad 160000
--- a/source/vtr-verilog-to-routing
+++ b/source/vtr-verilog-to-routing
@@ -1 +1 @@
-Subproject commit 136ecda8a0f47988d589adf2ec30998e6e1067aa
+Subproject commit b4ac6ad41d27a59678a77aa6f3eee84e19b6a328