diff --git a/mobile/build.gradle b/mobile/build.gradle
index 5e228e8..644d13a 100644
--- a/mobile/build.gradle
+++ b/mobile/build.gradle
@@ -7,8 +7,8 @@ android {
         applicationId "info.papdt.express.helper"
         minSdkVersion 19
         targetSdkVersion 25
-        versionCode 31
-        versionName "2.5.0 Alpha 1"
+        versionCode 32
+        versionName "2.5.0 Beta 2"
         resConfigs "en", "zh_cn", "zh_tw"
     }
     buildTypes {
diff --git a/mobile/src/main/assets/licenses.html b/mobile/src/main/assets/licenses.html
index 8c7226a..559e2e2 100644
--- a/mobile/src/main/assets/licenses.html
+++ b/mobile/src/main/assets/licenses.html
@@ -113,6 +113,25 @@ <h3>Notices for files:</h3>
 
 <h3>Notices for files:</h3>
 
+<ul>
+	<li>MaterialPreference</li>
+</ul>
+	<pre>Copyright 2016 RikkaW
+
+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.</pre>
+
+<h3>Notices for files:</h3>
+
 <ul>
 	<li>CircleImageView</li>
 </ul>