diff --git a/FrameworkPre/mybatis-study/flower/pom.xml b/FrameworkPre/mybatis-study/flower/pom.xml
index c77420fc..163b769f 100644
--- a/FrameworkPre/mybatis-study/flower/pom.xml
+++ b/FrameworkPre/mybatis-study/flower/pom.xml
@@ -26,7 +26,7 @@
     <dependency>
       <groupId>org.apache.tomcat</groupId>
       <artifactId>tomcat-catalina</artifactId>
-      <version>7.0.78</version>
+      <version>7.0.81</version>
       <scope>provided</scope>
     </dependency>
     <!-- mysql -->