diff --git a/pom.xml b/pom.xml
old mode 100755
new mode 100644
index 1780c00..bd9721e
--- a/pom.xml
+++ b/pom.xml
@@ -29,7 +29,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <maven.compiler.source>1.7</maven.compiler.source>
         <maven.compiler.target>1.7</maven.compiler.target>
-        <spring.version>4.2.4.RELEASE</spring.version>
+        <spring.version>5.2.20.RELEASE</spring.version>
         <mybatis.version>3.2.8</mybatis.version>
         <mybatis.spring.version>1.2.2</mybatis.spring.version>
         <mysql.version>5.1.32</mysql.version>