diff --git a/technology/scn4m_subm/tech/tech.py b/technology/scn4m_subm/tech/tech.py
index ee63203c..374ba4c8 100644
--- a/technology/scn4m_subm/tech/tech.py
+++ b/technology/scn4m_subm/tech/tech.py
@@ -428,8 +428,8 @@ spice["sa_transconductance"] = (spice["mobility_n"])*spice["cox"]*(parameter["sa
 drc_name = "magic"
 lvs_name = "netgen"
 pex_name = "magic"
-# drc_name = "klayout"
-# lvs_name = "klayout"
-# pex_name = "klayout"
+drc_name = "klayout"
+lvs_name = "klayout"
+pex_name = "klayout"
 
 blackbox_bitcell = False