diff --git a/exercise-1.md b/exercise-1.md
index b2087ce..d9380a3 100644
--- a/exercise-1.md
+++ b/exercise-1.md
@@ -12,7 +12,7 @@ Prepare the maven pom.xml for Kotlin.
 
 ```xml
 <properties>
-    <kotlin.version>1.5.10</kotlin.version>
+    <kotlin.version>2.0.20</kotlin.version>
     <kotlin.compiler.incremental>true</kotlin.compiler.incremental>
     ...
 </properties>