diff --git a/build.gradle b/build.gradle
index a97b1086585ff4a7887537b5c3e740d5eb0bfcc7..5c5f0677eebdfe1328dd829f105155a33b7322af 100644
--- a/build.gradle
+++ b/build.gradle
@@ -7,6 +7,9 @@ apply plugin: 'findbugs'
 project.version = '1.0.1-SNAPSHOT'
 project.group = 'de.hhu.stups'
 
+project.sourceCompatibility = '1.7'
+project.targetCompatibility = '1.7'
+
 repositories {
 	mavenCentral()
         maven {