diff --git a/ruanji/task4/pom.xml b/ruanji/task4/pom.xml
index 885b5da..b2ce598 100644
--- a/ruanji/task4/pom.xml
+++ b/ruanji/task4/pom.xml
@@ -34,7 +34,7 @@
         <dependency>
             <groupId>commons-io</groupId>
             <artifactId>commons-io</artifactId>
-            <version>2.4</version>
+            <version>2.7</version>
         </dependency>
 
         <dependency>