diff --git a/app/build.gradle b/app/build.gradle
index 3e6082a..b828404 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -25,6 +25,10 @@
     dataBinding {
         enabled = true
     }
+    compileOptions {
+        targetCompatibility 1.8
+        sourceCompatibility 1.8
+    }
 }
 
 dependencies {