diff --git a/VERSION b/VERSION
index 4f76463..6e17bd2 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.0.393
+1.0.394
diff --git a/gf180mcu/Makefile.in b/gf180mcu/Makefile.in
index 7f7b0ff..a40e9e0 100644
--- a/gf180mcu/Makefile.in
+++ b/gf180mcu/Makefile.in
@@ -135,13 +135,13 @@
 LINK_TARGETS_B = gf180mcuA
 LINK_TARGETS_C = gf180mcuA
 
-# ENABLED_VARIANTS = all | A | B | C
+# ENABLED_VARIANTS = all | A | B | C | D
 ENABLED_VARIANTS = @GF180MCU_ENABLED_VARIANTS@
 ifeq (${ENABLED_VARIANTS},)
-	VARIANTS += A B C
+	VARIANTS += A B C D
 else
     ifeq (${ENABLED_VARIANTS}, all)
-	VARIANTS += A B C
+	VARIANTS += A B C D
     else
 	VARIANTS += ${ENABLED_VARIANTS}
     endif
diff --git a/gf180mcu/NOTES b/gf180mcu/NOTES
index 5f722a8..f6b6e36 100644
--- a/gf180mcu/NOTES
+++ b/gf180mcu/NOTES
@@ -3,3 +3,8 @@
 
 July 27, 2022:  Open source repositories now available on github, so integrating
 directly into open_pdks.
+
+February 14, 2023:  Added PDK variant gf180mcuD, which is like gf180mcuC except
+has a top metal thickness of 1.1um instead of 0.9um.  According to GF, this is
+preferred for better wire bonding yield on the pads.  The first open MPW was
+done with gf180mcuC, but all subsequent open MPWs will be done with gf180mcuD.
diff --git a/gf180mcu/README b/gf180mcu/README
index 2cb4f06..3681089 100644
--- a/gf180mcu/README
+++ b/gf180mcu/README
@@ -35,7 +35,7 @@
 	    gf180mcuA/	3-metal backend stack
 	    gf180mcuB/	4-metal backend stack
 	    gf180mcuC/	5-metal backend stack (9K)
-	    gf180mcuC/	5-metal backend stack (11K)
+	    gf180mcuD/	5-metal backend stack (11K)
 
 (Again, see the Makefile for the complete description.)