diff --git a/pom.xml b/pom.xml
old mode 100755
new mode 100644
index d231c51d..629618cf
--- a/pom.xml
+++ b/pom.xml
@@ -554,7 +554,7 @@
       <dependency>
         <groupId>commons-net</groupId>
         <artifactId>commons-net</artifactId>
-        <version>2.2</version>
+        <version>3.9.0</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>