diff --git a/tensorflow/python/compat/compat.py b/tensorflow/python/compat/compat.py
index 74fe1fe35c9..ce230731b02 100644
--- a/tensorflow/python/compat/compat.py
+++ b/tensorflow/python/compat/compat.py
@@ -26,7 +26,7 @@ import datetime
 from tensorflow.python.util import tf_contextlib
 from tensorflow.python.util.tf_export import tf_export
 
-_FORWARD_COMPATIBILITY_HORIZON = datetime.date(2018, 9, 25)
+_FORWARD_COMPATIBILITY_HORIZON = datetime.date(2018, 9, 26)
 
 
 @tf_export("compat.forward_compatible")