diff --git a/spring-web/spring-shiro/pom.xml b/spring-web/spring-shiro/pom.xml
index c94108c..c7826f5 100644
--- a/spring-web/spring-shiro/pom.xml
+++ b/spring-web/spring-shiro/pom.xml
@@ -21,7 +21,7 @@
         <activiti.version>5.21.0</activiti.version>
 
         <!-- tools version setting -->
-        <log4j.version>2.1</log4j.version>
+        <log4j.version>2.16.0</log4j.version>
 
         <!-- jdbc driver setting -->
         <mysql.driver.version>5.1.35</mysql.driver.version>