diff --git a/bin/ckt b/bin/ckt
index 05064df..fba53c6 160000
--- a/bin/ckt
+++ b/bin/ckt
@@ -1 +1 @@
-Subproject commit 05064dffba9fddc9aa03860d38bc27de053d0504
+Subproject commit fba53c6523968b2cd750e84161257ec19cb29df0
diff --git a/lib/phy b/lib/phy
index 80d48c0..6fac305 160000
--- a/lib/phy
+++ b/lib/phy
@@ -1 +1 @@
-Subproject commit 80d48c045d76ff7dc82feb2efe4f8eee0bdde258
+Subproject commit 6fac305154b0119cd0eadbf1d9c7e0ea1be8ffa7
diff --git a/lib/sch b/lib/sch
index c017621..3043b55 160000
--- a/lib/sch
+++ b/lib/sch
@@ -1 +1 @@
-Subproject commit c017621a69b74de46c71b4b3ee755bdcb054fd45
+Subproject commit 3043b55eb3aa719bd4655d039c3aeb9c353d1d64
diff --git a/tech/sky130.py b/tech/sky130.py
index baa8628..178bb70 100644
--- a/tech/sky130.py
+++ b/tech/sky130.py
@@ -271,6 +271,7 @@
 fill(nwell_label)
 fill(dnwell)
 fill(hvtp)
+fill(lvtn)
 fill(nsdm)
 fill(psdm)
 fill(pwell_pin)
@@ -321,6 +322,7 @@
 spacing(psdm, psdm, 76)
 spacing(diff, diff, 54)
 spacing(hvtp, hvtp, 76)
+spacing(lvtn, lvtn, 76)
 spacing(poly, poly, 42)
 spacing(licon1, licon1, 34)
 spacing(li1, li1, 34)