diff --git a/event/src/main/java/com/zfoo/event/manager/EventThreadFactory.java b/event/src/main/java/com/zfoo/event/manager/EventThreadFactory.java
index 807aab72..9965e293 100644
--- a/event/src/main/java/com/zfoo/event/manager/EventThreadFactory.java
+++ b/event/src/main/java/com/zfoo/event/manager/EventThreadFactory.java
@@ -1,3 +1,16 @@
+/*
+ * Copyright (C) 2020 The zfoo 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.
+ */
+
 package com.zfoo.event.manager;
 
 import io.netty.util.concurrent.FastThreadLocalThread;