diff --git a/build.gradle b/build.gradle
index f17c73014..de7cad829 100644
--- a/build.gradle
+++ b/build.gradle
@@ -103,6 +103,11 @@ android {
     lintOptions {
         abortOnError false
     }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_7
+        targetCompatibility JavaVersion.VERSION_1_7
+    }
 }
 
 task wrapper(type: Wrapper) {