diff --git a/MyShop/pom.xml b/MyShop/pom.xml
old mode 100755
new mode 100644
index 2e051a4..dc197c7
--- a/MyShop/pom.xml
+++ b/MyShop/pom.xml
@@ -42,7 +42,7 @@
         <dependency>
             <groupId>org.springframework.security</groupId>
             <artifactId>spring-security-core</artifactId>
-            <version>5.2.0.RELEASE</version>
+            <version>5.5.7</version>
         </dependency>
         <!-- https://mvnrepository.com/artifact/commons-codec/commons-codec -->
         <dependency>