diff --git a/code-notes-demo/nio-practise/pom.xml b/code-notes-demo/nio-practise/pom.xml
index b58cb91..f3ed57f 100644
--- a/code-notes-demo/nio-practise/pom.xml
+++ b/code-notes-demo/nio-practise/pom.xml
@@ -26,7 +26,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>compile</scope>
         </dependency>
     </dependencies>