diff --git a/pom.xml b/pom.xml
index 83cccbd..4b0825b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -13,7 +13,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <java.source.version>1.8</java.source.version>
         <java.target.version>1.8</java.target.version>
-        <spring.version>4.3.20.RELEASE</spring.version>
+        <spring.version>4.3.21.RELEASE</spring.version>
         <org.slf4j.version>1.7.12</org.slf4j.version>
         <jackson.version>2.10.0</jackson.version>
         <!-- mybatis版本 -->