diff --git a/build.gradle b/build.gradle
index e28ffc4..a26e4bb 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 buildscript {
     ext {
-        kotlin_version = '1.4.20'
+        kotlin_version = '1.4.21'
         lifecycle_version = "2.2.0"
         appcompat_version = "1.2.0"
         constraint_layout_version = "2.0.4"