diff --git a/sandbox/sandbox-server/pom.xml b/sandbox/sandbox-server/pom.xml
old mode 100755
new mode 100644
index 1b0e700..ed16d2e
--- a/sandbox/sandbox-server/pom.xml
+++ b/sandbox/sandbox-server/pom.xml
@@ -94,7 +94,7 @@
     <dependency>
       <groupId>mysql</groupId>
       <artifactId>mysql-connector-java</artifactId>
-      <version>8.0.17</version>
+      <version>8.0.28</version>
     </dependency>
 
     <dependency>