diff --git a/pom.xml b/pom.xml
index d23774f..3e74d5f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -159,7 +159,7 @@
         <dependency>
             <groupId>commons-net</groupId>
             <artifactId>commons-net</artifactId>
-            <version>3.1</version>
+            <version>3.9.0</version>
         </dependency>
 
         <!-- file upload -->