diff --git a/README.md b/README.md
index 0c1e336..10cd713 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ Add below dependency in your **build.gradle** file.
 
 ```groovy
 dependencies {
-    compile 'co.lujun:androidtagview:1.1.3'
+    compile 'co.lujun:androidtagview:1.1.4'
 }
 ```
 
@@ -84,6 +84,7 @@ Now, you have successfully created some TagViews. The following will show some m
 | tag_cross_line_width | dimension | The cross line width(default 1dp)
 | tag_cross_area_padding | dimension | The padding of the cross area(default 10dp)
 | tag_support_letters_rlt | boolean | Whether to support 'letters show with RTL(eg: Android -> diordnA)' style(default false)
+| tag_background | reference | TagView background resource(default none background)
 
 **You can set these attributes in layout file, or use setters(each attribute has get and set method) to set them.**
 
@@ -208,6 +209,9 @@ mTagcontainerLayout.setTags(tags, colors);
 
 ## Change logs
 
+### 1.1.4(2017-6-1)
+- Add attribute for TagView background.
+
 ### 1.1.3(2017-5-17)
 - Add ```getTagView(int position)``` method to get TagView in specified position.
 
diff --git a/androidtagview/build.gradle b/androidtagview/build.gradle
index dbbf3b1..b819a0e 100644
--- a/androidtagview/build.gradle
+++ b/androidtagview/build.gradle
@@ -7,8 +7,8 @@ android {
     defaultConfig {
         minSdkVersion 9
         targetSdkVersion 25
-        versionCode 113
-        versionName "1.1.3"
+        versionCode 114
+        versionName "1.1.4"
     }
     buildTypes {
         release {
diff --git a/androidtagview/src/main/java/co/lujun/androidtagview/ColorFactory.java b/androidtagview/src/main/java/co/lujun/androidtagview/ColorFactory.java
index e51a7ce..943813d 100644
--- a/androidtagview/src/main/java/co/lujun/androidtagview/ColorFactory.java
+++ b/androidtagview/src/main/java/co/lujun/androidtagview/ColorFactory.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2015 lujun
+ *
+ * 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 co.lujun.androidtagview;
 
 import android.graphics.Color;
diff --git a/androidtagview/src/main/java/co/lujun/androidtagview/TagContainerLayout.java b/androidtagview/src/main/java/co/lujun/androidtagview/TagContainerLayout.java
index a8516d2..54ee53e 100644
--- a/androidtagview/src/main/java/co/lujun/androidtagview/TagContainerLayout.java
+++ b/androidtagview/src/main/java/co/lujun/androidtagview/TagContainerLayout.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2015 lujun
+ *
+ * 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 co.lujun.androidtagview;
 
 import android.content.Context;
diff --git a/androidtagview/src/main/java/co/lujun/androidtagview/TagView.java b/androidtagview/src/main/java/co/lujun/androidtagview/TagView.java
index dfb39dd..9afd66d 100644
--- a/androidtagview/src/main/java/co/lujun/androidtagview/TagView.java
+++ b/androidtagview/src/main/java/co/lujun/androidtagview/TagView.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2015 lujun
+ *
+ * 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 co.lujun.androidtagview;
 
 import android.animation.ValueAnimator;
diff --git a/androidtagview/src/main/java/co/lujun/androidtagview/Utils.java b/androidtagview/src/main/java/co/lujun/androidtagview/Utils.java
index c059416..6691bcf 100644
--- a/androidtagview/src/main/java/co/lujun/androidtagview/Utils.java
+++ b/androidtagview/src/main/java/co/lujun/androidtagview/Utils.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2015 lujun
+ *
+ * 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 co.lujun.androidtagview;
 
 import android.content.Context;