diff --git a/samples/02.echo-bot/pom.xml b/samples/02.echo-bot/pom.xml
index 0826c753f..af633db9a 100644
--- a/samples/02.echo-bot/pom.xml
+++ b/samples/02.echo-bot/pom.xml
@@ -51,7 +51,7 @@
       <dependency>
         <groupId>junit</groupId>
         <artifactId>junit</artifactId>
-        <version>4.12</version>
+        <version>4.13.1</version>
         <scope>test</scope>
       </dependency>
       <dependency>