diff --git a/build.gradle b/build.gradle
index 9775aac..fef2078 100644
--- a/build.gradle
+++ b/build.gradle
@@ -10,7 +10,7 @@ plugins {
     id 'io.github.gradle-nexus.publish-plugin' version '1.3.0'
 }
 
-final KOTLIN_VER = '1.9.10'
+final KOTLIN_VER = '1.9.20'
 
 //noinspection GroovyUnusedAssignment
 sourceCompatibility = targetCompatibility = JavaVersion.VERSION_1_8