diff --git a/pom.xml b/pom.xml
index bf98467..18d452c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -136,7 +136,7 @@
     </profiles>
     <properties>
         <java.version>1.8</java.version>
-        <kotlin.version>1.3.31</kotlin.version>
+        <kotlin.version>1.6.0</kotlin.version>
         <nexmo.version>4.4.0</nexmo.version>
         <spring-boot.version>2.1.4.RELEASE</spring-boot.version>
     </properties>