diff --git a/back-end/pom.xml b/back-end/pom.xml
old mode 100755
new mode 100644
index a38aa74..259778f
--- a/back-end/pom.xml
+++ b/back-end/pom.xml
@@ -46,7 +46,7 @@
 		<dependency>
 			<groupId>io.netty</groupId>
 			<artifactId>netty-all</artifactId>
-			<version>4.1.25.Final</version>
+			<version>4.1.42.Final</version>
 		</dependency>
 		
 		<!-- apache 工具类 -->