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 4589d89a40..d993a336e0 160000
--- a/tools/OpenROAD
+++ b/tools/OpenROAD
@@ -1 +1 @@
-Subproject commit 4589d89a4015fe19e60880907a3e76777f0dce50
+Subproject commit d993a336e0e4731fe988c5c8a61b9f2b81dd8d19