diff --git a/build.gradle b/build.gradle
index 81a0abd..1dee8a8 100644
--- a/build.gradle
+++ b/build.gradle
@@ -69,6 +69,9 @@ android {
         versionCode(20000 + getMyVersionCode())
         minSdkVersion 9
         targetSdkVersion 25
+        jackOptions {
+            enabled true
+        }
     }
 }