diff --git a/pkg/version/def.bzl b/pkg/version/def.bzl
index bca85ab4..9c018a4e 100644
--- a/pkg/version/def.bzl
+++ b/pkg/version/def.bzl
@@ -1,3 +1,17 @@
+# Copyright 2017 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 # Implements hack/lib/version.sh's kube::version::ldflags() for Bazel.
 def version_x_defs():
   # This should match the list of packages in kube::version::ldflag