diff --git a/app/build.gradle b/app/build.gradle
index c3e8ea87..cbe0c867 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,15 +1,15 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion = 26
-    buildToolsVersion = "26.0.2"
+    compileSdkVersion = 27
+    buildToolsVersion = "27"
 
     defaultConfig {
         applicationId = "eu.faircode.netguard"
-        versionName = "2.142"
-        minSdkVersion 14
-        targetSdkVersion 26
-        versionCode = 2017102301
+        versionName = "2.143"
+        minSdkVersion 21
+        targetSdkVersion 27
+        versionCode = 2017102601
         archivesBaseName = "NetGuard-v$versionName"
 
         externalNativeBuild {
@@ -21,7 +21,7 @@ android {
         }
 
         ndk {
-            abiFilters 'armeabi', 'x86'
+            abiFilters 'armeabi', 'armeabi-v7a', 'x86', 'mips'
         }
     }
 
@@ -49,8 +49,8 @@ dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
 
     // https://developer.android.com/topic/libraries/support-library/revisions.html
-    implementation 'com.android.support:appcompat-v7:26.1.+'
-    implementation 'com.android.support:recyclerview-v7:26.1.+'
+    implementation 'com.android.support:appcompat-v7:27.+'
+    implementation 'com.android.support:recyclerview-v7:27.+'
 
     // https://developers.google.com/android/guides/setup
     implementation 'com.google.android.gms:play-services-base:11.4.+'
diff --git a/app/src/main/jni/netguard/netguard.c b/app/src/main/jni/netguard/netguard.c
index 5ee2aa08..1d2d4a46 100644
--- a/app/src/main/jni/netguard/netguard.c
+++ b/app/src/main/jni/netguard/netguard.c
@@ -418,7 +418,7 @@ void report_error(const struct arguments *args, jint error, const char *fmt, ...
 static jmethodID midProtect = NULL;
 
 int protect_socket(const struct arguments *args, int socket) {
-    if (args->sdk >= 23)
+    if (args->sdk >= 21)
         return 0;
 
     jclass cls = (*args->env)->GetObjectClass(args->env, args->instance);
diff --git a/app/src/main/res/layout/traffic.xml b/app/src/main/res/layout/traffic.xml
index 7a64e1c2..4378727c 100644
--- a/app/src/main/res/layout/traffic.xml
+++ b/app/src/main/res/layout/traffic.xml
@@ -15,7 +15,7 @@
             android:id="@+id/tvTx"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:textAppearance="@style/TextAppearance.AppCompat.Notification.Info"
+            android:textAppearance="@style/TextAppearance.AppCompat.Small"
             android:typeface="monospace" />
 
         <TextView
@@ -25,7 +25,7 @@
             android:layout_marginStart="4dp"
             android:alpha="0.5"
             android:text="▲"
-            android:textAppearance="@style/TextAppearance.AppCompat.Notification.Info"
+            android:textAppearance="@style/TextAppearance.AppCompat.Small"
             android:textColor="@color/colorSend" />
 
         <TextView
@@ -34,7 +34,7 @@
             android:layout_height="wrap_content"
             android:layout_marginLeft="4dp"
             android:layout_marginStart="4dp"
-            android:textAppearance="@style/TextAppearance.AppCompat.Notification.Info"
+            android:textAppearance="@style/TextAppearance.AppCompat.Small"
             android:typeface="monospace" />
 
         <TextView
@@ -44,7 +44,7 @@
             android:layout_marginStart="4dp"
             android:alpha="0.5"
             android:text="▼"
-            android:textAppearance="@style/TextAppearance.AppCompat.Notification.Info"
+            android:textAppearance="@style/TextAppearance.AppCompat.Small"
             android:textColor="@color/colorReceive" />
     </LinearLayout>
 
@@ -55,7 +55,7 @@
         android:layout_alignParentLeft="true"
         android:layout_alignParentStart="true"
         android:layout_alignParentTop="true"
-        android:textAppearance="@style/TextAppearance.AppCompat.Notification.Info"
+        android:textAppearance="@style/TextAppearance.AppCompat.Small"
         android:textSize="10sp" />
 
     <TextView
@@ -66,7 +66,7 @@
         android:layout_alignParentLeft="true"
         android:layout_alignParentStart="true"
         android:singleLine="false"
-        android:textAppearance="@style/TextAppearance.AppCompat.Notification.Info"
+        android:textAppearance="@style/TextAppearance.AppCompat.Small"
         android:textSize="10sp" />
 
     <TextView
@@ -76,7 +76,7 @@
         android:layout_alignParentEnd="true"
         android:layout_alignParentRight="true"
         android:layout_alignParentTop="true"
-        android:textAppearance="@style/TextAppearance.AppCompat.Notification.Info"
+        android:textAppearance="@style/TextAppearance.AppCompat.Small"
         android:textSize="10sp" />
 
     <ImageView
@@ -96,7 +96,7 @@
         android:layout_alignParentRight="true"
         android:layout_centerVertical="true"
         android:paddingTop="10sp"
-        android:textAppearance="@style/TextAppearance.AppCompat.Notification.Info"
+        android:textAppearance="@style/TextAppearance.AppCompat.Small"
         android:textColor="@color/colorGrayed"
         android:textSize="10sp"
         android:typeface="monospace" />
diff --git a/build.gradle b/build.gradle
index 328f439f..277d555b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,7 +8,7 @@ buildscript {
         // http://tools.android.com/tech-docs/new-build-system/gradle-experimental
         // https://bintray.com/android/android-tools/com.android.tools.build.gradle-experimental/view
         // https://bintray.com/android/android-tools/com.google.gms.google-services/view
-        classpath 'com.android.tools.build:gradle:3.0.0-rc2'
+        classpath 'com.android.tools.build:gradle:3.0.0'
         classpath 'com.google.gms:google-services:3.1.0'
 
         // NOTE: Do not place your application dependencies here; they belong
diff --git a/tools/addr2line.sh b/tools/addr2line.sh
index b1ced971..9d226d50 100644
--- a/tools/addr2line.sh
+++ b/tools/addr2line.sh
@@ -1,4 +1,4 @@
 #!/bin/sh
 addr2line=/media/marcel/C720/android-ndk-r10e/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-addr2line
-lib=./app/build/intermediates/binaries/debug/all/obj/armeabi-v7a/libnetguard.so
+lib=./app/build/intermediates/cmake/release/obj/armeabi/libnetguard.so
 addr2line -C -f -e $lib $1