diff --git a/BasicSample/build.gradle b/BasicSample/build.gradle
index ef2fe1a..e3a8845 100644
--- a/BasicSample/build.gradle
+++ b/BasicSample/build.gradle
@@ -17,7 +17,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.2.50'
+    ext.kotlin_version = '1.2.70'
     repositories {
         google()
         jcenter()