diff --git a/build.gradle b/build.gradle
index 09c7003c..69f53231 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,7 +4,7 @@ buildscript {
     ext.target_sdk_version = 30
     ext.appcompat_version='1.2.0'
 
-    ext.kotlin_version = '1.4.20'
+    ext.kotlin_version = '1.4.21'
     ext.kotlinx_coroutines_version = '1.4.2'
     ext.anko_version='0.10.8'