diff --git a/src/main/java/com/alibaba/druid/support/monitor/PushServiceListener.java b/src/main/java/com/alibaba/druid/support/monitor/PushServiceListener.java
index 112f503baf..2f453bb48c 100644
--- a/src/main/java/com/alibaba/druid/support/monitor/PushServiceListener.java
+++ b/src/main/java/com/alibaba/druid/support/monitor/PushServiceListener.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 1999-2011 Alibaba Group Holding Ltd.
+ *
+ * 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.alibaba.druid.support.monitor;
 
 import javax.servlet.ServletContextEvent;
diff --git a/src/main/java/com/alibaba/druid/util/DaemonThreadFactory.java b/src/main/java/com/alibaba/druid/util/DaemonThreadFactory.java
index e1a4a18565..5dc2d07416 100644
--- a/src/main/java/com/alibaba/druid/util/DaemonThreadFactory.java
+++ b/src/main/java/com/alibaba/druid/util/DaemonThreadFactory.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 1999-2011 Alibaba Group Holding Ltd.
+ *
+ * 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.alibaba.druid.util;
 
 import java.util.concurrent.ThreadFactory;
diff --git a/src/main/java/com/alibaba/druid/util/HttpClientUtils.java b/src/main/java/com/alibaba/druid/util/HttpClientUtils.java
index a0e5a742ed..206a8ca0a1 100644
--- a/src/main/java/com/alibaba/druid/util/HttpClientUtils.java
+++ b/src/main/java/com/alibaba/druid/util/HttpClientUtils.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 1999-2011 Alibaba Group Holding Ltd.
+ *
+ * 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.alibaba.druid.util;
 
 import java.io.BufferedReader;