diff --git a/chromeos_version.sh b/chromeos_version.sh
index c20333bcc5..8c475c5d52 100755
--- a/chromeos_version.sh
+++ b/chromeos_version.sh
@@ -24,7 +24,7 @@ export_release_version() {
   # Increment by 2 in trunk after making a release branch.
   # Does not reset on a major/minor change (always increases).
   # (Trunk is always odd; branches are always even).
-  export CHROMEOS_VERSION_BRANCH=21
+  export CHROMEOS_VERSION_BRANCH=23
 
   # Patch number.
   # Increment by 1 each release on a branch.