diff --git a/doric-android/devkit/src/main/java/pub/doric/devkit/DoricDev.java b/doric-android/devkit/src/main/java/pub/doric/devkit/DoricDev.java
index 6fc6ab1f..e8cf78ca 100644
--- a/doric-android/devkit/src/main/java/pub/doric/devkit/DoricDev.java
+++ b/doric-android/devkit/src/main/java/pub/doric/devkit/DoricDev.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright [2019] [Doric.Pub]
+ *
+ * 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 pub.doric.devkit;
 
 import android.content.Intent;
@@ -12,7 +27,6 @@ import org.json.JSONObject;
 import java.io.EOFException;
 import java.net.ConnectException;
 import java.util.ArrayList;
-import java.util.Collection;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
@@ -21,11 +35,9 @@ import java.util.WeakHashMap;
 import pub.doric.Doric;
 import pub.doric.DoricContext;
 import pub.doric.DoricContextManager;
-import pub.doric.DoricNativeDriver;
 import pub.doric.DoricSingleton;
 import pub.doric.devkit.ui.DoricDevActivity;
 import pub.doric.devkit.util.SimulatorUtil;
-import pub.doric.performance.DoricPerformanceProfile;
 import pub.doric.utils.DoricLog;
 
 public class DoricDev {
diff --git a/doric-android/devkit/src/main/java/pub/doric/devkit/DoricDevkitPlugin.java b/doric-android/devkit/src/main/java/pub/doric/devkit/DoricDevkitPlugin.java
index 602aef28..1419b6f4 100644
--- a/doric-android/devkit/src/main/java/pub/doric/devkit/DoricDevkitPlugin.java
+++ b/doric-android/devkit/src/main/java/pub/doric/devkit/DoricDevkitPlugin.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright [2021] [Doric.Pub]
+ *
+ * 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 pub.doric.devkit;
 
 import com.github.pengfeizhou.jscore.JavaValue;
diff --git a/doric-android/devkit/src/main/java/pub/doric/devkit/util/SimulatorUtil.java b/doric-android/devkit/src/main/java/pub/doric/devkit/util/SimulatorUtil.java
index 5b0e5b87..72a63e0c 100644
--- a/doric-android/devkit/src/main/java/pub/doric/devkit/util/SimulatorUtil.java
+++ b/doric-android/devkit/src/main/java/pub/doric/devkit/util/SimulatorUtil.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright [2019] [Doric.Pub]
+ *
+ * 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 pub.doric.devkit.util;
 
 import android.bluetooth.BluetoothAdapter;