diff --git a/xos/gui/gulp_tasks/browsersync.js b/xos/gui/gulp_tasks/browsersync.js
index 945a88d..0e4ada2 100755
--- a/xos/gui/gulp_tasks/browsersync.js
+++ b/xos/gui/gulp_tasks/browsersync.js
@@ -1,3 +1,21 @@
+
+/*
+ * Copyright 2017-present Open Networking Foundation
+
+ * 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.
+ */
+
+
 const gulp = require('gulp');
 const browserSync = require('browser-sync');
 const spa = require('browser-sync-spa');
diff --git a/xos/gui/gulp_tasks/karma.js b/xos/gui/gulp_tasks/karma.js
index 5b90572..9955d1a 100755
--- a/xos/gui/gulp_tasks/karma.js
+++ b/xos/gui/gulp_tasks/karma.js
@@ -1,3 +1,21 @@
+
+/*
+ * Copyright 2017-present Open Networking Foundation
+
+ * 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.
+ */
+
+
 const path = require('path');
 
 const gulp = require('gulp');
diff --git a/xos/gui/gulp_tasks/misc.js b/xos/gui/gulp_tasks/misc.js
index d1e70ec..2c9fbb0 100755
--- a/xos/gui/gulp_tasks/misc.js
+++ b/xos/gui/gulp_tasks/misc.js
@@ -1,3 +1,21 @@
+
+/*
+ * Copyright 2017-present Open Networking Foundation
+
+ * 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.
+ */
+
+
 const path = require('path');
 
 const gulp = require('gulp');
diff --git a/xos/gui/gulp_tasks/webpack.js b/xos/gui/gulp_tasks/webpack.js
index ec8e8b1..ccb64c0 100755
--- a/xos/gui/gulp_tasks/webpack.js
+++ b/xos/gui/gulp_tasks/webpack.js
@@ -1,3 +1,21 @@
+
+/*
+ * Copyright 2017-present Open Networking Foundation
+
+ * 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.
+ */
+
+
 const gulp = require('gulp');
 const gutil = require('gulp-util');