diff --git a/pom.xml b/pom.xml
index ede5d03..68569ae 100644
--- a/pom.xml
+++ b/pom.xml
@@ -186,7 +186,7 @@
         <dependency>
             <groupId>commons-net</groupId>
             <artifactId>commons-net</artifactId>
-            <version>3.1</version>
+            <version>3.9.0</version>
         </dependency>
 
         <!-- file upload -->