diff --git a/packages/google-cloud-dialogflow-cx/.github/release-please.yml b/packages/google-cloud-dialogflow-cx/.github/release-please.yml
index 466597e5b196..6def37a84c98 100644
--- a/packages/google-cloud-dialogflow-cx/.github/release-please.yml
+++ b/packages/google-cloud-dialogflow-cx/.github/release-please.yml
@@ -1,2 +1,8 @@
 releaseType: python
 handleGHRelease: true
+# NOTE: this section is generated by synthtool.languages.python
+# See https://github.com/googleapis/synthtool/blob/master/synthtool/languages/python.py
+branches:
+- branch: v0
+  handleGHRelease: true
+  releaseType: python
diff --git a/packages/google-cloud-dialogflow-cx/owlbot.py b/packages/google-cloud-dialogflow-cx/owlbot.py
index 388c8f89f574..d2aa450f2477 100644
--- a/packages/google-cloud-dialogflow-cx/owlbot.py
+++ b/packages/google-cloud-dialogflow-cx/owlbot.py
@@ -46,6 +46,8 @@
 
 python.py_samples(skip_readmes=True)
 
+python.configure_previous_major_version_branches()
+
 # ----------------------------------------------------------------------------
 # Run blacken session
 # ----------------------------------------------------------------------------