chore: release 2.3.1
diff --git a/CHANGELOG.md b/CHANGELOG.md
index dff7ecd..108ff88 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+### [2.3.1](https://www.github.com/googleapis/google-api-python-client/compare/v2.3.0...v2.3.1) (2021-04-29)
+
+
+### Bug Fixes
+
+* preventing accessing predefined discovery URLs when override is provided ([#1324](https://www.github.com/googleapis/google-api-python-client/issues/1324)) ([1c4d199](https://www.github.com/googleapis/google-api-python-client/commit/1c4d1998086d89238ca5d961bc1c8eee5685345c))
+
 ## [2.3.0](https://www.github.com/googleapis/google-api-python-client/compare/v2.2.0...v2.3.0) (2021-04-28)
 
 
diff --git a/setup.py b/setup.py
index caba2c5..a1418da 100644
--- a/setup.py
+++ b/setup.py
@@ -46,7 +46,7 @@
 with io.open(readme_filename, encoding="utf-8") as readme_file:
     readme = readme_file.read()
 
-version = "2.3.0"
+version = "2.3.1"
 
 setup(
     name="google-api-python-client",