title: How to change embedded tomcat's version in existing spring boot app?
body: <p>I'm currently running <code>spring-boot version 1.4.0.RELEASE</code> application with embedded tomcat. Included Tomcat's version is <code>8.5.4</code></p>
  
  <p>There's a need to update the tomcat version to <code>9.x</code>. When I looked at mvnrepository <a href="https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-tomcat/1.4.0.RELEASE" rel="noreferrer">here</a>, I found that there's an update available to tomcat version <code>9.0.5</code> (shown in pic below) </p>
  
  <p><a href="https://i.stack.imgur.com/Zbidp.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/Zbidp.jpg" alt="enter image description here"></a></p>
  
  <p>How should I use this version in my project if there's no way to directly mention this version in my <code>pom.xml</code>?</p>
  
  <p>I do not want to go the traditional deployment route (WAR artifacts on external tomcats).</p>