diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 27c388d7b091225f09db8a6dbc8c5658def3c4e2..be54154de0bb1c97420932abedd2480a37097b06 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -15,8 +15,8 @@ plugins {
 }
 
 android {
-  compileSdkVersion(26)
-  buildToolsVersion("27.0.2")
+  compileSdkVersion(27)
+  buildToolsVersion("27.0.3")
 
   signingConfigs {
     val signing = project.rootProject.properties("signing.properties")
@@ -32,7 +32,7 @@ android {
 
   defaultConfig {
     minSdkVersion(16)
-    targetSdkVersion(26)
+    targetSdkVersion(27)
 
     applicationId = "de.kuschku.quasseldroid_ng"
     versionCode = 1
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 1ae31fe938355206800ae6f14a6dd374848f20f1..5a5a337ae2c2a0e5476915c2c22b96bb5ccf24db 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -2,5 +2,5 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https://services.gradle.org/distributions/gradle-4.3.1-all.zip
+distributionUrl=https://services.gradle.org/distributions/gradle-4.5.1-all.zip
 
diff --git a/malheur/build.gradle.kts b/malheur/build.gradle.kts
index 38e8818bd602e17a811c4cdebdfd25ca911beaab..81022a43859114ff9e0881304404944d8fd1a309 100644
--- a/malheur/build.gradle.kts
+++ b/malheur/build.gradle.kts
@@ -5,12 +5,12 @@ plugins {
 }
 
 android {
-  compileSdkVersion(26)
-  buildToolsVersion("27.0.2")
+  compileSdkVersion(27)
+  buildToolsVersion("27.0.3")
 
   defaultConfig {
     minSdkVersion(9)
-    targetSdkVersion(26)
+    targetSdkVersion(27)
 
     consumerProguardFiles("proguard-rules.pro")
   }