diff --git a/CHANGELOG.md b/CHANGELOG.md
index c9e6364..4e26316 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,13 @@
 
 [1]: https://pypi.org/project/google-auth/#history
 
+## [1.9.0](https://www.github.com/googleapis/google-auth-library-python/compare/v1.8.2...v1.9.0) (2019-12-12)
+
+
+### Features
+
+* add timeout parameter to `AuthorizedSession.request()` ([#406](https://www.github.com/googleapis/google-auth-library-python/issues/406)) ([d86d7b8](https://www.github.com/googleapis/google-auth-library-python/commit/d86d7b8c43df152765c7fc59a54015361b46dcde))
+
 ### [1.8.2](https://www.github.com/googleapis/google-auth-library-python/compare/v1.8.1...v1.8.2) (2019-12-11)
 
 
diff --git a/setup.py b/setup.py
index d98e89c..f4a8b17 100644
--- a/setup.py
+++ b/setup.py
@@ -30,7 +30,7 @@
 with io.open("README.rst", "r") as fh:
     long_description = fh.read()
 
-version = "1.8.2"
+version = "1.9.0"
 
 setup(
     name="google-auth",