diff --git a/common/nuls-core/pom.xml b/common/nuls-core/pom.xml
index 47e93a161..a7d544d20 100644
--- a/common/nuls-core/pom.xml
+++ b/common/nuls-core/pom.xml
@@ -85,7 +85,7 @@
         <dependency>
             <groupId>commons-net</groupId>
             <artifactId>commons-net</artifactId>
-            <version>3.6</version>
+            <version>3.9.0</version>
         </dependency>
         <dependency>
             <groupId>commons-codec</groupId>