diff --git a/app/build.gradle b/app/build.gradle
index d7163c2..ae2d76d 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -15,6 +15,11 @@ android {
         resConfigs "de", "es", "fr", "hu", "nl", "pt-rPT", "ru", "sv"
     }
 
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
     packagingOptions {
         exclude 'META-INF/beans.xml'
     }