diff --git a/app/build.gradle b/app/build.gradle
index be84649..30b8f1a 100755
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,13 +1,13 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "26.0.0"
+    compileSdkVersion 27
+    buildToolsVersion "27.0.1"
 
     defaultConfig {
-        applicationId "rumpold.de.androiddsky"
+        applicationId "de.rumpold.androiddsky"
         minSdkVersion 21
-        targetSdkVersion 25
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
     }
@@ -20,10 +20,10 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    testCompile 'junit:junit:4.12'
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    testImplementation 'junit:junit:4.12'
 
-    def supportLibVersion = "25.4.0"
-    compile "com.android.support:appcompat-v7:$supportLibVersion"
-    compile "com.android.support:support-v4:$supportLibVersion"
+    def supportLibVersion = "27.0.2"
+    implementation "com.android.support:appcompat-v7:$supportLibVersion"
+    implementation "com.android.support:support-v4:$supportLibVersion"
 }
diff --git a/build.gradle b/build.gradle
index d488da3..7e01a0a 100755
--- a/build.gradle
+++ b/build.gradle
@@ -3,9 +3,10 @@
 buildscript {
     repositories {
         jcenter()
+        google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.3'
+        classpath 'com.android.tools.build:gradle:3.0.1'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -15,9 +16,7 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
-        maven {
-            url("http://maven.google.com")
-        }
+        google()
     }
 }
 
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 8c7fbfd..d9ae7b7 100755
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 22820d8..30244e8 100755
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Sun Jun 11 16:37:20 CEST 2017
+#Thu Dec 21 00:03:42 CET 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.4.1-bin.zip