diff --git a/VERSION b/VERSION
index 18e1034..2ef01da 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.0.601
+1.0.602
diff --git a/gf180mcu/gf180mcu.json b/gf180mcu/gf180mcu.json
index 4a1e42a..e5676ae 100644
--- a/gf180mcu/gf180mcu.json
+++ b/gf180mcu/gf180mcu.json
@@ -97,8 +97,8 @@
         "magic": "MAGIC_COMMIT"
     },
     "reference": {
-        "open_pdks": "a45e68d8d64bae4f87e4fb62d2b55bc6922602dc",
-        "magic": "5cf1a46061ee1931753f4a13eec75cf65fd464b0",
+        "open_pdks": "b8fd683254557a01a7f025772fe8789f09e39be6",
+        "magic": "e7b8e89d2fe4eed1d51ee6a66a3d818c2095b024",
         "gf180mcu_pdk": "a897aa30369d3bcec87d9d50ce9b01f320f854ef",
         "gf180mcu_fd_pr": "a0c31bd71c2084a5283204dc4e80f1f901d2d5d0",
         "gf180mcu_fd_pv": "440fe9b995a3967fcdc3e694d8d61a83dd218b59",
diff --git a/sky130/custom/scripts/gds_import_io.tcl b/sky130/custom/scripts/gds_import_io.tcl
index 85d3c3e..e80be78 100644
--- a/sky130/custom/scripts/gds_import_io.tcl
+++ b/sky130/custom/scripts/gds_import_io.tcl
@@ -54,6 +54,8 @@
 gds flatglob *pu_natives*
 # Other flattening needed for SIO (possibly this could be more targeted)
 gds flatglob *__sio_hotswap*
+gds flatglob *__sio_pupredrvr_reg*
+gds flatglob *__sio_obpredrvr_reg*
 
 ### flatten parts of pwrdetv2, where there are devices in deep nwell
 ### that are in sibling cells, and resistors separated from HVI
diff --git a/sky130/sky130.json b/sky130/sky130.json
index 61c8b57..943e662 100644
--- a/sky130/sky130.json
+++ b/sky130/sky130.json
@@ -94,10 +94,10 @@
         "magic": "MAGIC_COMMIT"
     },
     "reference": {
-        "open_pdks": "a45e68d8d64bae4f87e4fb62d2b55bc6922602dc",
-        "magic": "5cf1a46061ee1931753f4a13eec75cf65fd464b0",
+        "open_pdks": "b8fd683254557a01a7f025772fe8789f09e39be6",
+        "magic": "e7b8e89d2fe4eed1d51ee6a66a3d818c2095b024",
         "sky130_fd_pr": "403964dc7f9cca5ec1a8cc7b4f2a6f532b781676",
-        "sky130_fd_io": "788a5c3de6447a8df43cb844309438babbb4f4bd",
+        "sky130_fd_io": "8af140f093deeb92648068cf71eca372bce3d761",
         "sky130_fd_sc_hs": "c3d7991a9bcb4fc33cbd43262b44bb5560d6fdd0",
         "sky130_fd_sc_ms": "29650994547dd83610ccd0a29bae14d665a9e556",
         "sky130_fd_sc_ls": "4283919deb7eb4ed195c2b6e95431a812491f6d0",