diff --git a/build.gradle b/build.gradle
index 29700f835f166fa2b80a30a9be1c2cf4e788589a..d0e78fc0b6592de9e7111c55138c3a6405820aa3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,8 +8,8 @@ project.group = 'de.hhu.stups'
 project.archivesBaseName = "sablecc"
 
 allprojects {
-    sourceCompatibility = 1.5
-    targetCompatibility = 1.5
+    sourceCompatibility = 1.6
+    targetCompatibility = 1.6
 }
 
 dependencies {