diff --git a/tensorflow/contrib/opt/python/training/nadam_optimizer.py b/tensorflow/contrib/opt/python/training/nadam_optimizer.py
index 44a8890cb10..155ff5b3f4f 100644
--- a/tensorflow/contrib/opt/python/training/nadam_optimizer.py
+++ b/tensorflow/contrib/opt/python/training/nadam_optimizer.py
@@ -1,4 +1,4 @@
-# Copyright 2015 The TensorFlow Authors. All Rights Reserved.
+# Copyright 2018 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.