diff --git a/code/pom.xml b/code/pom.xml
index 13b02fa..8f95012 100644
--- a/code/pom.xml
+++ b/code/pom.xml
@@ -143,7 +143,7 @@
         <dependency>
             <groupId>commons-net</groupId>
             <artifactId>commons-net</artifactId>
-            <version>3.8.0</version>
+            <version>3.9.0</version>
         </dependency>
         <dependency>
             <groupId>commons-validator</groupId>