Upgrading jetty to 9.4.20.v20190813

Project: Gradle project

IDE: Eclipse

JAVA VERSION:

 java version "1.8.0_202"
 Java(TM) SE Runtime Environment (build 1.8.0_202-b08)
 Java HotSpot(TM) 64-Bit Server VM (build 25.202-b08, mixed mode)

Build Tool: Gradle

Web Server: Jetty 9.4.20.v20190813

Currently, the gretty configuration in build.gradle is as below,

gretty {
  servletContainer = 'jetty9'
}

I came to know that jetty9 will uses jetty 9.2.22.v20170606 and even jetty9.4 will use 9.4.6.v20170531 which I confirmed running web application from eclipse. Referred from https://stackoverflow.com/a/49676985/11733763

I need to use jetty 9.4.20.v20190813 in my development environment since we upgraded the jetty server to 9.4.20.v20190813. How could this be achieved?