Update README copyright dates
diff --git a/README.md b/README.md
index d6a5767..bd5a4bf 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,6 @@
 
 License
 -------
-Copyright (C) 2009-2013 The Apache Software Foundation
+Copyright (C) 2009-2019 The Apache Software Foundation
 
 Licensed under the Apache License, Version 2.0