diff --git a/app/build.gradle b/app/build.gradle
index cf884c7..66c1b07 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -2,7 +2,7 @@ apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion 25
-    buildToolsVersion '25.0.3'
+    buildToolsVersion '26.0.3'
 
     testOptions {
         unitTests.returnDefaultValues = true
@@ -12,8 +12,8 @@ android {
         applicationId "org.secuso.privacyfriendlysudoku"
         minSdkVersion 16
         targetSdkVersion 25
-        versionCode 5
-        versionName "2.1.1"
+        versionCode 6
+        versionName "2.1.2"
     }
     buildTypes {
         release {