diff --git a/colornames/colornames.go b/colornames/colornames.go
index e952be9..fa94d42 100644
--- a/colornames/colornames.go
+++ b/colornames/colornames.go
@@ -1,4 +1,4 @@
-// Copyright 2011 The Go Authors. All rights reserved.
+// Copyright 2015 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/colornames/colornames_test.go b/colornames/colornames_test.go
index d6d0324..5251bb8 100644
--- a/colornames/colornames_test.go
+++ b/colornames/colornames_test.go
@@ -1,4 +1,4 @@
-// Copyright 2011 The Go Authors. All rights reserved.
+// Copyright 2015 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/colornames/gen.go b/colornames/gen.go
index 035825c..c03404c 100644
--- a/colornames/gen.go
+++ b/colornames/gen.go
@@ -1,4 +1,4 @@
-// Copyright 2011 The Go Authors. All rights reserved.
+// Copyright 2015 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.