diff --git a/V2rayNG/app/build.gradle b/V2rayNG/app/build.gradle
index 3c906e29..a0cb7c43 100644
--- a/V2rayNG/app/build.gradle
+++ b/V2rayNG/app/build.gradle
@@ -89,12 +89,9 @@ dependencies {
     implementation 'io.reactivex:rxjava:1.3.4'
     implementation 'io.reactivex:rxandroid:1.2.1'
     implementation 'com.tbruyelle.rxpermissions:rxpermissions:0.9.4@aar'
-    implementation 'com.dinuscxj:recycleritemdecoration:1.0.0'
-    implementation 'io.reactivex:rxkotlin:0.60.0'
     implementation 'me.dm7.barcodescanner:core:1.9.8'
     implementation 'me.dm7.barcodescanner:zxing:1.9.8'
     implementation 'com.github.jorgecastilloprz:fabprogresscircle:1.01@aar'
-    implementation 'com.beust:klaxon:3.0.1'
 
     implementation(name: 'libv2ray', ext: 'aar')
     //implementation(name: 'tun2socks', ext: 'aar')
diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/PerAppProxyActivity.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/PerAppProxyActivity.kt
index 3ba3120c..d154d4d3 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/PerAppProxyActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/PerAppProxyActivity.kt
@@ -4,6 +4,8 @@ import android.animation.Animator
 import android.animation.AnimatorListenerAdapter
 import android.content.Context
 import android.os.Bundle
+import android.support.v7.widget.DividerItemDecoration
+import android.support.v7.widget.LinearLayoutManager
 import android.support.v7.widget.RecyclerView
 import android.text.TextUtils
 import android.util.Log
@@ -12,7 +14,6 @@ import android.view.MenuItem
 import android.view.View
 import android.view.animation.AccelerateInterpolator
 import android.view.animation.DecelerateInterpolator
-import com.dinuscxj.itemdecoration.LinearDividerItemDecoration
 import com.v2ray.ang.R
 import com.v2ray.ang.extension.defaultDPreference
 import com.v2ray.ang.util.AppManagerUtil
@@ -47,8 +48,7 @@ class PerAppProxyActivity : BaseActivity() {
 
         supportActionBar?.setDisplayHomeAsUpEnabled(true)
 
-        val dividerItemDecoration = LinearDividerItemDecoration(
-                this, LinearDividerItemDecoration.LINEAR_DIVIDER_VERTICAL)
+        val dividerItemDecoration = DividerItemDecoration(this, LinearLayoutManager.VERTICAL)
         recycler_view.addItemDecoration(dividerItemDecoration)
 
         val blacklist = defaultDPreference.getPrefStringSet(PREF_PER_APP_PROXY_SET, null)
@@ -276,4 +276,4 @@ class PerAppProxyActivity : BaseActivity() {
         }
         return true
     }
-}
\ No newline at end of file
+}
diff --git a/V2rayNG/app/src/main/res/raw/licenses.xml b/V2rayNG/app/src/main/res/raw/licenses.xml
index 2df2478e..e7949142 100644
--- a/V2rayNG/app/src/main/res/raw/licenses.xml
+++ b/V2rayNG/app/src/main/res/raw/licenses.xml
@@ -17,12 +17,6 @@
         <copyright>Copyright(C) 2008-2011 The Android Open Source Project</copyright>
         <license>Apache Software License 2.0</license>
     </notice>
-    <notice>
-        <name>Apache Commons Validator</name>
-        <url>http://commons.apache.org/proper/commons-collections/</url>
-        <copyright>Copyright(C) 2001-2014 The Apache Software Foundation</copyright>
-        <license>Apache Software License 2.0</license>
-    </notice>
     <notice>
         <name>anko</name>
         <url>https://github.com/Kotlin/anko</url>
@@ -52,33 +46,9 @@
         <copyright>Copyright 2015 Square, Inc.</copyright>
         <license>Apache Software License 2.0</license>
     </notice>
-    <notice>
-        <name>ReactiveNetwork</name>
-        <url>https://github.com/pwittchen/ReactiveNetwork</url>
-        <copyright>Copyright 2016 Piotr Wittchen</copyright>
-        <license>Apache Software License 2.0</license>
-    </notice>
-    <notice>
-        <name>RecyclerItemDecoration</name>
-        <url>https://github.com/dinuscxj/RecyclerItemDecoration</url>
-        <copyright>Copyright 2015-2019 dinus</copyright>
-        <license>Apache Software License 2.0</license>
-    </notice>
-    <notice>
-        <name>RxKotlin</name>
-        <url>https://github.com/ReactiveX/RxKotlin</url>
-        <copyright>Copyright 2012 Netflix, Inc.</copyright>
-        <license>Apache Software License 2.0</license>
-    </notice>
     <notice>
         <name>RxPermissions</name>
         <url>https://github.com/tbruyelle/RxPermissions</url>
         <license>Apache Software License 2.0</license>
     </notice>
-    <notice>
-        <name>RecyclerItemDecoration</name>
-        <url>https://github.com/dinuscxj/RecyclerItemDecoration</url>
-        <copyright>Copyright 2015-2019 dinus</copyright>
-        <license>Apache Software License 2.0</license>
-    </notice>
-</notices>
\ No newline at end of file
+</notices>