diff --git a/build.gradle b/build.gradle
index 0e22927..d526267 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,7 +3,7 @@
 buildscript {
     ext.version_code = 2003001
     ext.version_name = '2.3.1'
-    ext.version_kotlin = '2.0.20'
+    ext.version_kotlin = '2.0.21'
     ext.version_sso = '1.3.2'
     ext.version_android_commons = '1.0.2'