diff --git a/back-end/pom.xml b/back-end/pom.xml
old mode 100755
new mode 100644
index a38aa74..c67b21a
--- a/back-end/pom.xml
+++ b/back-end/pom.xml
@@ -69,7 +69,7 @@
 		<dependency>
 			<groupId>mysql</groupId>
 			<artifactId>mysql-connector-java</artifactId>
-			<version>8.0.11</version>
+			<version>8.0.28</version>
 		</dependency>
 
 		<!-- mybatis -->