Release v1.4.0 (#240)

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 58052f5..192a30e 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,13 @@
 Changelog
 =========
 
+v1.4.0
+------
+
+- Added `cryptography`-based RSA signer and verifier. (#185)
+- Added `google.oauth2.service_account.IDTokenCredentials`. (#234)
+- Improved documentation around ID Tokens (#224)
+
 v1.3.0
 ------
 
diff --git a/setup.py b/setup.py
index 0a21f25..6fec08b 100644
--- a/setup.py
+++ b/setup.py
@@ -31,7 +31,7 @@
 
 setup(
     name='google-auth',
-    version='1.3.0',
+    version='1.4.0',
     author='Google Cloud Platform',
     author_email='jonwayne+google-auth@google.com',
     description='Google Authentication Library',