diff --git a/samples/tropo-transfer-example/pom.xml b/samples/tropo-transfer-example/pom.xml
index 43deffd..0b9fe27 100644
--- a/samples/tropo-transfer-example/pom.xml
+++ b/samples/tropo-transfer-example/pom.xml
@@ -23,7 +23,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>3.8.1</version>
+      <version>4.13.1</version>
       <scope>test</scope>
     </dependency>
   </dependencies>