diff --git a/build.gradle b/build.gradle
index 4a96ae77f..fd7f17aea 100644
--- a/build.gradle
+++ b/build.gradle
@@ -11,7 +11,7 @@ subprojects {
         testCompile 'org.hamcrest:hamcrest-library:1.3'
     }
 
-    sourceCompatibility = 1.6
+    sourceCompatibility = 1.7
     jar {
         manifest {
             attributes 'Implementation-Version': '0.9.31-7'