diff --git a/lib/zip-container/exceptions.rb b/lib/zip-container/exceptions.rb
index 4263f61..a880ed4 100644
--- a/lib/zip-container/exceptions.rb
+++ b/lib/zip-container/exceptions.rb
@@ -1,4 +1,4 @@
-# Copyright (c) 2013, 2014 The University of Manchester, UK.
+# Copyright (c) 2013-2015 The University of Manchester, UK.
 #
 # All rights reserved.
 #
diff --git a/test/tc_exceptions.rb b/test/tc_exceptions.rb
index 032f28c..3a9db3c 100644
--- a/test/tc_exceptions.rb
+++ b/test/tc_exceptions.rb
@@ -1,4 +1,4 @@
-# Copyright (c) 2014 The University of Manchester, UK.
+# Copyright (c) 2014, 2015 The University of Manchester, UK.
 #
 # All rights reserved.
 #