diff --git a/flow/designs/sky130hd/chameleon/config.mk b/flow/designs/sky130hd/chameleon/config.mk
index d02447831b..d56a272dfb 100644
--- a/flow/designs/sky130hd/chameleon/config.mk
+++ b/flow/designs/sky130hd/chameleon/config.mk
@@ -29,7 +29,7 @@ export ABC_AREA = 1
 
 export SDC_FILE      = $(DESIGN_HOME)/$(PLATFORM)/$(DESIGN_NICKNAME)/constraint.sdc
 
-export CORE_UTILIZATION       = 70
+export CORE_UTILIZATION       = 60
 export CORE_ASPECT_RATIO      = 1.3
 export CORE_MARGIN            = 2
 
diff --git a/tools/OpenROAD b/tools/OpenROAD
index fe1aa0f9d0..1ee4ee3d6c 160000
--- a/tools/OpenROAD
+++ b/tools/OpenROAD
@@ -1 +1 @@
-Subproject commit fe1aa0f9d0254fac87b82c886c04ee1544e46885
+Subproject commit 1ee4ee3d6c3350dd19cec6a93e04011cf24a0a94