diff --git a/app/build.gradle b/app/build.gradle
index d772a10c4..76cb0219b 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -17,6 +17,11 @@ android {
                 "es", "ja", "ko"
     }
 
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
     lintOptions {
         abortOnError false
         checkReleaseBuilds false