Release v1.5.1 (#282)

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 6506f67..54fbbb1 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,14 @@
 Changelog
 =========
 
+v1.5.1
+------
+
+- Fix check for error text on Python 3.7. (#278)
+- Use new Auth URIs. (#281)
+- Add code-of-conduct document. (#270)
+- Fix some typos in test_urllib3.py (#268)
+
 v1.5.0
 ------
 
diff --git a/setup.py b/setup.py
index 6bda014..582d08f 100644
--- a/setup.py
+++ b/setup.py
@@ -31,7 +31,7 @@
 
 setup(
     name='google-auth',
-    version='1.5.0',
+    version='1.5.1',
     author='Google Cloud Platform',
     author_email='jonwayne+google-auth@google.com',
     description='Google Authentication Library',