diff --git a/build.gradle b/build.gradle
index a68adc14..8e355c93 100644
--- a/build.gradle
+++ b/build.gradle
@@ -12,7 +12,7 @@ buildscript {
         }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.0-beta05'
+        classpath 'com.android.tools.build:gradle:3.5.0-rc01'
         classpath 'com.github.ben-manes:gradle-versions-plugin:0.21.0'
         classpath 'com.google.gms:google-services:4.3.0'
         classpath 'io.fabric.tools:gradle:1.30.0'
diff --git a/mobile/build.gradle b/mobile/build.gradle
index b01418f0..58f63f88 100644
--- a/mobile/build.gradle
+++ b/mobile/build.gradle
@@ -19,8 +19,8 @@ android {
         minSdkVersion 21
         targetSdkVersion 29
         resConfigs "ru", "zh-rCN"
-        versionCode 207
-        versionName '2.5.0'
+        versionCode 208
+        versionName '2.5.1'
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         javaCompileOptions {
             annotationProcessorOptions {
diff --git a/mobile/src/main/java/be/mygod/vpnhotspot/client/MacLookup.kt b/mobile/src/main/java/be/mygod/vpnhotspot/client/MacLookup.kt
index 654be479..a1c5e785 100644
--- a/mobile/src/main/java/be/mygod/vpnhotspot/client/MacLookup.kt
+++ b/mobile/src/main/java/be/mygod/vpnhotspot/client/MacLookup.kt
@@ -15,7 +15,6 @@ import kotlinx.coroutines.launch
 import org.json.JSONException
 import org.json.JSONObject
 import timber.log.Timber
-import java.io.IOException
 import java.net.HttpURLConnection
 import java.net.URL
 
diff --git a/mobile/src/main/java/be/mygod/vpnhotspot/net/monitor/TetherTimeoutMonitor.kt b/mobile/src/main/java/be/mygod/vpnhotspot/net/monitor/TetherTimeoutMonitor.kt
index e1bbc715..0db85441 100644
--- a/mobile/src/main/java/be/mygod/vpnhotspot/net/monitor/TetherTimeoutMonitor.kt
+++ b/mobile/src/main/java/be/mygod/vpnhotspot/net/monitor/TetherTimeoutMonitor.kt
@@ -16,8 +16,8 @@ import timber.log.Timber
 import java.lang.IllegalArgumentException
 
 @RequiresApi(28)
-class TetherTimeoutMonitor(private val context: Context, private val handler: Handler, private val onTimeout: () -> Unit):
-        ContentObserver(handler), AutoCloseable {
+class TetherTimeoutMonitor(private val context: Context, private val handler: Handler,
+                           private val onTimeout: () -> Unit) : ContentObserver(handler), AutoCloseable {
     /**
      * config_wifi_framework_soft_ap_timeout_delay was introduced in Android 9.
      *
@@ -40,7 +40,8 @@ class TetherTimeoutMonitor(private val context: Context, private val handler: Ha
             app.resources.getInteger(Resources.getSystem().getIdentifier(
                     "config_wifi_framework_soft_ap_timeout_delay", "integer", "android")).let { delay ->
                 if (delay < MIN_SOFT_AP_TIMEOUT_DELAY_MS) {
-                    Timber.w("Overriding timeout delay with minimum limit value: $delay < $MIN_SOFT_AP_TIMEOUT_DELAY_MS")
+                    Timber.w(
+                            "Overriding timeout delay with minimum limit value: $delay < $MIN_SOFT_AP_TIMEOUT_DELAY_MS")
                     MIN_SOFT_AP_TIMEOUT_DELAY_MS
                 } else delay
             }