diff --git a/build.sbt b/build.sbt
index 726a9ef6..f958a9aa 100644
--- a/build.sbt
+++ b/build.sbt
@@ -20,6 +20,9 @@ proguardVersion := "5.3.2"
 proguardCache := Seq()
 proguardOptions ++=
   "-keep class com.github.shadowsocks.System { *; }" ::
+  "-keep class okhttp3.** { *; }" ::
+  "-keep interface okhttp3.** { *; }" ::
+  "-dontwarn okio.**" ::
   "-dontwarn com.google.android.gms.internal.**" ::
   "-dontwarn com.j256.ormlite.**" ::
   "-dontwarn org.xbill.**" ::
@@ -37,7 +40,7 @@ libraryDependencies ++=
   "com.android.support" % "preference-v14" % "25.1.0" ::
   "com.evernote" % "android-job" % "1.1.3" ::
   "com.github.jorgecastilloprz" % "fabprogresscircle" % "1.01" ::
-  "com.github.kevinsawicki" % "http-request" % "6.0" ::
+  "com.squareup.okhttp3" % "okhttp" % "3.5.0" ::
   "com.google.android.gms" % "play-services-ads" % "10.0.1" ::
   "com.google.android.gms" % "play-services-analytics" % "10.0.1" ::
   "com.google.android.gms" % "play-services-gcm" % "10.0.1" ::
diff --git a/src/main/res/raw/gtm_default_container b/src/main/res/raw/gtm_default_container
index fb2471d1..a17ed043 100644
Binary files a/src/main/res/raw/gtm_default_container and b/src/main/res/raw/gtm_default_container differ
diff --git a/src/main/scala/com/github/shadowsocks/BaseService.scala b/src/main/scala/com/github/shadowsocks/BaseService.scala
index a1b1de52..faa4ad18 100644
--- a/src/main/scala/com/github/shadowsocks/BaseService.scala
+++ b/src/main/scala/com/github/shadowsocks/BaseService.scala
@@ -21,7 +21,9 @@
 package com.github.shadowsocks
 
 import java.io.IOException
-import java.util.{Timer, TimerTask}
+import java.util.concurrent.TimeUnit;
+import java.util.{Arrays, List, Timer, TimerTask}
+import java.net.InetAddress
 
 import android.app.Service
 import android.content.{BroadcastReceiver, Context, Intent, IntentFilter}
@@ -30,12 +32,26 @@ import android.os.{Handler, RemoteCallbackList}
 import android.text.TextUtils
 import android.util.Log
 import android.widget.Toast
-import com.github.kevinsawicki.http.HttpRequest
 import com.github.shadowsocks.ShadowsocksApplication.app
 import com.github.shadowsocks.aidl.{IShadowsocksService, IShadowsocksServiceCallback}
 import com.github.shadowsocks.database.Profile
 import com.github.shadowsocks.utils._
 
+import okhttp3.Dns
+import okhttp3.FormBody
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import okhttp3.Response
+
+class CustomDns extends Dns {
+  override def lookup(hostname: String): List[InetAddress] = {
+    Utils.resolve(hostname, false) match {
+      case Some(ip) => Arrays.asList(InetAddress.getByName(ip))
+      case _ => Dns.SYSTEM.lookup(hostname)
+    }
+  }
+}
+
 trait BaseService extends Service {
 
   @volatile private var state = State.STOPPED
@@ -132,12 +148,24 @@ trait BaseService extends Service {
     val container = holder.getContainer
     val url = container.getString("proxy_url")
     val sig = Utils.getSignature(this)
-    val list = HttpRequest
-      .post(url)
-      .connectTimeout(2000)
-      .readTimeout(2000)
-      .send("sig="+sig)
-      .body
+
+    val client = new OkHttpClient.Builder()
+      .dns(new CustomDns())
+      .connectTimeout(10, TimeUnit.SECONDS)
+      .writeTimeout(10, TimeUnit.SECONDS)
+      .readTimeout(30, TimeUnit.SECONDS)
+      .build()
+    val requestBody = new FormBody.Builder()
+      .add("sig", sig)
+      .build()
+    val request = new Request.Builder()
+      .url(url)
+      .post(requestBody)
+      .build()
+
+    val resposne = client.newCall(request).execute()
+    val list = resposne.body.string
+
     val proxies = util.Random.shuffle(list.split('|').toSeq)
     val proxy = proxies.head.split(':')
     profile.host = proxy(0).trim