diff --git a/Backend/pom.xml b/Backend/pom.xml
old mode 100755
new mode 100644
index 655cba0..c72f84b
--- a/Backend/pom.xml
+++ b/Backend/pom.xml
@@ -11,7 +11,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <maven.compiler.encoding>UTF-8</maven.compiler.encoding>
         <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>