diff --git a/tech/sky130_fd_sc_ls.tlef b/tech/sky130_fd_sc_ls.tlef
index ad14973..40cb60d 100644
--- a/tech/sky130_fd_sc_ls.tlef
+++ b/tech/sky130_fd_sc_ls.tlef
@@ -28,6 +28,10 @@
 
 MANUFACTURINGGRID 0.005 ;
 
+PROPERTYDEFINITIONS
+  LAYER LEF58_TYPE STRING ;
+END PROPERTYDEFINITIONS
+
 # Standard density, single height
 SITE unit
   SYMMETRY Y ;
@@ -42,6 +46,16 @@
   SIZE 0.48 BY 6.66 ;
 END unitdbl
 
+LAYER nwell
+  TYPE MASTERSLICE ;
+  PROPERTY LEF58_TYPE "TYPE NWELL ;" ;
+END nwell
+
+LAYER pwell
+  TYPE MASTERSLICE ;
+  PROPERTY LEF58_TYPE "TYPE PWELL ;" ;
+END pwell
+
 LAYER li1
   TYPE ROUTING ;
   DIRECTION VERTICAL ;
@@ -56,8 +70,8 @@
      WIDTH 0 0.17 ;
   AREA 0.0561 ;         # LI 6
   THICKNESS 0.1 ;
-  EDGECAPACITANCE 3.26E-6 ;
-  CAPACITANCE CPERSQDIST 36.9E-6 ;
+  EDGECAPACITANCE 40.697E-6 ;
+  CAPACITANCE CPERSQDIST 36.9866E-6 ;
   RESISTANCE RPERSQ 12.2 ;
 
   ANTENNADIFFSIDEAREARATIO PWL ( ( 0 75 ) ( 0.0125 75 ) ( 0.0225 85.125 ) ( 22.5 10200 ) ) ;
@@ -96,8 +110,8 @@
 
   ANTENNADIFFSIDEAREARATIO PWL ( ( 0 400 ) ( 0.0125 400 ) ( 0.0225 2609 ) ( 22.5 11600 ) ) ;
 
-  EDGECAPACITANCE 1.79E-6 ;
-  CAPACITANCE CPERSQDIST 25.8E-6 ;
+  EDGECAPACITANCE 40.697E-6 ;
+  CAPACITANCE CPERSQDIST 25.7784E-6 ;
   DCCURRENTDENSITY AVERAGE 2.8 ; # mA/um Iavg_max at Tj = 90oC
   ACCURRENTDENSITY RMS 6.1 ; # mA/um Irms_max at Tj = 90oC
 
@@ -133,8 +147,8 @@
   AREA 0.0676 ;                       # Met2 6
   THICKNESS 0.35 ;
 
-  EDGECAPACITANCE 1.22E-6 ;
-  CAPACITANCE CPERSQDIST 17.5E-6 ;
+  EDGECAPACITANCE 37.759E-6 ;
+  CAPACITANCE CPERSQDIST 16.9423E-6 ;
   RESISTANCE RPERSQ 0.125 ;
   DCCURRENTDENSITY AVERAGE 2.8 ; # mA/um Iavg_max at Tj = 90oC
   ACCURRENTDENSITY RMS 6.1 ; # mA/um Irms_max at Tj = 90oC
@@ -168,8 +182,8 @@
   AREA 0.24 ;              # Met3 6
   THICKNESS 0.8 ;
 
-  EDGECAPACITANCE 1.86E-6 ;
-  CAPACITANCE CPERSQDIST 12.6E-6 ;
+  EDGECAPACITANCE 40.989E-6 ;
+  CAPACITANCE CPERSQDIST 12.3729E-6 ;
   RESISTANCE RPERSQ 0.047 ;
   DCCURRENTDENSITY AVERAGE 6.8 ; # mA/um Iavg_max at Tj = 90oC
   ACCURRENTDENSITY RMS 14.9 ; # mA/um Irms_max at Tj = 90oC
@@ -204,8 +218,8 @@
 
   THICKNESS 0.8 ;
 
-  EDGECAPACITANCE 1.29E-6 ;
-  CAPACITANCE CPERSQDIST 8.67E-6 ;
+  EDGECAPACITANCE 36.676E-6 ;
+  CAPACITANCE CPERSQDIST 8.41537E-6 ;
   RESISTANCE RPERSQ 0.047 ;
   DCCURRENTDENSITY AVERAGE 6.8 ; # mA/um Iavg_max at Tj = 90oC
   ACCURRENTDENSITY RMS 14.9 ; # mA/um Irms_max at Tj = 90oC
@@ -240,8 +254,8 @@
 
   THICKNESS 1.2 ;
 
-  EDGECAPACITANCE 4.96E-6 ;
-  CAPACITANCE CPERSQDIST 6.48E-6 ;
+  EDGECAPACITANCE 38.851E-6 ;
+  CAPACITANCE CPERSQDIST 6.32063E-6 ;
   RESISTANCE RPERSQ 0.0285 ;
   DCCURRENTDENSITY AVERAGE 10.17 ; # mA/um Iavg_max at Tj = 90oC
   ACCURRENTDENSITY RMS 22.34 ; # mA/um Irms_max at Tj = 90oC