diff --git a/build.gradle b/build.gradle
index 022b664..e92616d 100644
--- a/build.gradle
+++ b/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 = '1.3.11'
+    ext.kotlin_version = '1.8.20'
 
     ext {
         group = 'com.github.markusressel'