diff --git a/mango-demo/pom.xml b/mango-demo/pom.xml
index 23e3c71..db9c617 100644
--- a/mango-demo/pom.xml
+++ b/mango-demo/pom.xml
@@ -20,7 +20,7 @@
     </modules>
 
     <properties>
-	<logback.version>1.2.3</logback.version>
+	<logback.version>1.3.12</logback.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>