diff --git a/chromeos/config/chromeos_version.sh b/chromeos/config/chromeos_version.sh
index 90679e7b..c246753 100755
--- a/chromeos/config/chromeos_version.sh
+++ b/chromeos/config/chromeos_version.sh
@@ -25,7 +25,7 @@
   # Patch number.
   # Increment by 1 in case a non-scheduled branch release build is necessary.
   # Reset to 0 when increasing branch number.
-  CHROMEOS_PATCH=3
+  CHROMEOS_PATCH=4
 
   # Official builds must set CHROMEOS_OFFICIAL=1.
   if [ ${CHROMEOS_OFFICIAL:-0} -ne 1 ]; then