diff --git a/gf180mcu/openlane/gf180mcu_fd_sc_mcu7t5v0/config.tcl b/gf180mcu/openlane/gf180mcu_fd_sc_mcu7t5v0/config.tcl
index efd60ed..1e5b074 100644
--- a/gf180mcu/openlane/gf180mcu_fd_sc_mcu7t5v0/config.tcl
+++ b/gf180mcu/openlane/gf180mcu_fd_sc_mcu7t5v0/config.tcl
@@ -48,6 +48,7 @@
 # The library maximum transition is 8.9ns; setting it to lower value
 set ::env(MAX_TRANSITION_CONSTRAINT) 3
 set ::env(MAX_FANOUT_CONSTRAINT) 10
+set ::env(MAX_CAPACITANCE_CONSTRAINT) 2
 
 set ::env(GPL_CELL_PADDING) {0}
 set ::env(DPL_CELL_PADDING) {0}
diff --git a/gf180mcu/openlane/gf180mcu_fd_sc_mcu9t5v0/config.tcl b/gf180mcu/openlane/gf180mcu_fd_sc_mcu9t5v0/config.tcl
index 685631f..27602dc 100644
--- a/gf180mcu/openlane/gf180mcu_fd_sc_mcu9t5v0/config.tcl
+++ b/gf180mcu/openlane/gf180mcu_fd_sc_mcu9t5v0/config.tcl
@@ -48,6 +48,7 @@
 # The library maximum transition is 8.9ns; setting it to lower value
 set ::env(MAX_TRANSITION_CONSTRAINT) 3
 set ::env(MAX_FANOUT_CONSTRAINT) 10
+set ::env(MAX_CAPACITANCE_CONSTRAINT) 2
 
 set ::env(GPL_CELL_PADDING) {0}
 set ::env(DPL_CELL_PADDING) {0}
diff --git a/sky130/openlane/sky130_fd_sc_hd/config.tcl b/sky130/openlane/sky130_fd_sc_hd/config.tcl
index 681e880..a1e7a61 100755
--- a/sky130/openlane/sky130_fd_sc_hd/config.tcl
+++ b/sky130/openlane/sky130_fd_sc_hd/config.tcl
@@ -68,5 +68,6 @@
 set ::env(CTS_MAX_CAP) 1.53169
 set ::env(MAX_TRANSITION_CONSTRAINT) 0.75
 set ::env(MAX_FANOUT_CONSTRAINT) 10
+set ::env(MAX_CAPACITANCE_CONSTRAINT) 2
 
 set ::env(TRISTATE_CELL_PREFIX) "$::env(STD_CELL_LIBRARY)__ebuf"
diff --git a/sky130/openlane/sky130_fd_sc_hdll/config.tcl b/sky130/openlane/sky130_fd_sc_hdll/config.tcl
index 46b08f8..1658a52 100755
--- a/sky130/openlane/sky130_fd_sc_hdll/config.tcl
+++ b/sky130/openlane/sky130_fd_sc_hdll/config.tcl
@@ -65,5 +65,6 @@
 set ::env(CTS_MAX_CAP) 1.03547
 set ::env(MAX_TRANSITION_CONSTRAINT) 0.75
 set ::env(MAX_FANOUT_CONSTRAINT) 10
+set ::env(MAX_CAPACITANCE_CONSTRAINT) 2
 
 set ::env(TRISTATE_CELL_PREFIX) "$::env(STD_CELL_LIBRARY)__ebuf"
diff --git a/sky130/openlane/sky130_fd_sc_hs/config.tcl b/sky130/openlane/sky130_fd_sc_hs/config.tcl
index 2bd804c..3894709 100755
--- a/sky130/openlane/sky130_fd_sc_hs/config.tcl
+++ b/sky130/openlane/sky130_fd_sc_hs/config.tcl
@@ -63,6 +63,7 @@
 set ::env(CTS_MAX_CAP) 1.8894300000
 set ::env(MAX_TRANSITION_CONSTRAINT) 0.75
 set ::env(MAX_FANOUT_CONSTRAINT) 10
+set ::env(MAX_CAPACITANCE_CONSTRAINT) 2
 set ::env(FP_PDN_RAIL_WIDTH) 0.48
 
 set ::env(TRISTATE_CELL_PREFIX) "$::env(STD_CELL_LIBRARY)__ebuf"
diff --git a/sky130/openlane/sky130_fd_sc_hvl/config.tcl b/sky130/openlane/sky130_fd_sc_hvl/config.tcl
index 350a1e7..b48500f 100644
--- a/sky130/openlane/sky130_fd_sc_hvl/config.tcl
+++ b/sky130/openlane/sky130_fd_sc_hvl/config.tcl
@@ -69,4 +69,5 @@
 set ::env(CTS_MAX_CAP) 5.57100
 set ::env(MAX_TRANSITION_CONSTRAINT) 0.75
 set ::env(MAX_FANOUT_CONSTRAINT) 10
+set ::env(MAX_CAPACITANCE_CONSTRAINT) 2
 set ::env(FP_PDN_RAIL_WIDTH) 0.51
diff --git a/sky130/openlane/sky130_fd_sc_ls/config.tcl b/sky130/openlane/sky130_fd_sc_ls/config.tcl
index 7f07b42..d664c0f 100755
--- a/sky130/openlane/sky130_fd_sc_ls/config.tcl
+++ b/sky130/openlane/sky130_fd_sc_ls/config.tcl
@@ -66,6 +66,7 @@
 set ::env(CTS_MAX_CAP) 1.53169
 set ::env(MAX_TRANSITION_CONSTRAINT) 0.75
 set ::env(MAX_FANOUT_CONSTRAINT) 10
+set ::env(MAX_CAPACITANCE_CONSTRAINT) 2
 set ::env(FP_PDN_RAIL_WIDTH) 0.48
 
 set ::env(TRISTATE_CELL_PREFIX) "$::env(STD_CELL_LIBRARY)__ebuf"
diff --git a/sky130/openlane/sky130_fd_sc_ms/config.tcl b/sky130/openlane/sky130_fd_sc_ms/config.tcl
index 40d3e16..7276d01 100755
--- a/sky130/openlane/sky130_fd_sc_ms/config.tcl
+++ b/sky130/openlane/sky130_fd_sc_ms/config.tcl
@@ -65,6 +65,7 @@
 set ::env(CTS_MAX_CAP) 1.53169
 set ::env(MAX_TRANSITION_CONSTRAINT) 0.75
 set ::env(MAX_FANOUT_CONSTRAINT) 10
+set ::env(MAX_CAPACITANCE_CONSTRAINT) 2
 set ::env(FP_PDN_RAIL_WIDTH) 0.48
 
 set ::env(TRISTATE_CELL_PREFIX) "$::env(STD_CELL_LIBRARY)__ebuf"