diff --git a/deploy/vector_search/interface.py b/deploy/vector_search/interface.py
index e438d233d8d9218e95d4400974d54e2d76af046d..bbb460b9d6b9f1b3f4f11703c70c635a7f1e2f4a 100644
--- a/deploy/vector_search/interface.py
+++ b/deploy/vector_search/interface.py
@@ -1,3 +1,17 @@
+# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
+#
+# 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.
+
 import ctypes
 import paddle
 import numpy.ctypeslib as ctl