diff --git a/build.gradle b/build.gradle
index e881b55d..db09ddee 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,6 +1,6 @@
 buildscript {
     ext {
-        KOTLIN_VERSION = "1.4.10"
+        KOTLIN_VERSION = "1.4.21"
         KETHEREUM_VERSION = "0.82.2"
     }