diff --git a/pom.xml b/pom.xml
index 3d0db3e..0435894 100644
--- a/pom.xml
+++ b/pom.xml
@@ -88,7 +88,7 @@
         <dependency>
             <groupId>commons-net</groupId>
             <artifactId>commons-net</artifactId>
-            <version>3.1</version>
+            <version>3.9.0</version>
         </dependency>
         <!-- https://mvnrepository.com/artifact/com.alipay.sdk/alipay-sdk-java -->
         <!-- alipay -->