diff --git a/.github/release-please.yml b/.github/release-please.yml
index 466597e5b..29601ad46 100644
--- a/.github/release-please.yml
+++ b/.github/release-please.yml
@@ -1,2 +1,11 @@
 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: v1
+  handleGHRelease: true
+  releaseType: python
+- branch: v0
+  handleGHRelease: true
+  releaseType: python
diff --git a/owlbot.py b/owlbot.py
index 015670675..ba43cae94 100644
--- a/owlbot.py
+++ b/owlbot.py
@@ -219,6 +219,8 @@ def lint_setup_py(session):
 
 python.py_samples(skip_readmes=True)
 
+python.configure_previous_major_version_branches()
+
 s.replace(
     "samples/beam/noxfile.py",
     """INSTALL_LIBRARY_FROM_SOURCE \= os.environ.get\("INSTALL_LIBRARY_FROM_SOURCE", False\) in \(