diff --git a/duo_web/__init__.py b/duo_web/__init__.py
index 76b035b..b7b5284 100644
--- a/duo_web/__init__.py
+++ b/duo_web/__init__.py
@@ -9,6 +9,9 @@
 import hashlib
 import hmac
 import time
+import warnings
+
+warnings.warn("deprecated", DeprecationWarning)
 
 DUO_PREFIX = 'TX'
 APP_PREFIX = 'APP'
diff --git a/setup.py b/setup.py
index 3574de5..badf635 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setup(
     name='duo_web',
-    version='1.3.0',
+    version='1.3.1',
     description='Duo Web SDK for two-factor authentication',
     author='Duo Security, Inc.',
     author_email='support@duosecurity.com',