diff --git a/Back End/pom.xml b/Back End/pom.xml
old mode 100755
new mode 100644
index dd82c7338..d72f317d0
--- a/Back End/pom.xml	
+++ b/Back End/pom.xml	
@@ -9,7 +9,7 @@
     <version>1.0-SNAPSHOT</version>
     <properties>
         <file.encoding>UTF-8</file.encoding>
-        <spring.version>4.3.9.RELEASE</spring.version>
+        <spring.version>5.2.22.RELEASE</spring.version>
         <mysql.version>5.1.29</mysql.version>
         <servlet.version>2.5</servlet.version>
         <aspectj.version>1.8.1</aspectj.version>