diff --git a/build.gradle b/build.gradle
index 4cded90..00ec5e2 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,6 +1,6 @@
 buildscript {
     ext {
-        kotlinVersion = '1.3.72'
+        kotlinVersion = '1.4.20'
         springBootVersion = '2.2.6.RELEASE'
         jacksonVersion = '2.11.2'
         javaVersion = '1.8' // https://stackoverflow.com/a/52890377