diff --git a/java-library/pom.xml b/java-library/pom.xml
old mode 100755
new mode 100644
index b1ce26b6..2e6a9435
--- a/java-library/pom.xml
+++ b/java-library/pom.xml
@@ -80,7 +80,7 @@
         <dependency>
             <groupId>commons-net</groupId>
             <artifactId>commons-net</artifactId>
-            <version>3.6</version>
+            <version>3.9.0</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>
@@ -142,7 +142,7 @@
         <dependency>
             <groupId>commons-net</groupId>
             <artifactId>commons-net</artifactId>
-            <version>3.6</version>
+            <version>3.9.0</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>