Using different GWT SDK Version

Currently the mojo use and has been tested with following gwt sdk version 2.4.0. This version is defined in the plugin dependencies, so if you want an other (newer) version you must change your pom as it

<project>
  <properties>
    <gwt.version>here your prefered gwt sdk version</gwt.version>
  </properties>
  [...]
  <build>
    <plugins>
      [...]
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>gwt-maven-plugin</artifactId>
        <version>2.4.0</version>
        <dependencies>
          <dependency>
            <groupId>com.google.gwt</groupId>
            <artifactId>gwt-user</artifactId>
            <version>${gwt.version}</version>
          </dependency>
          <dependency>
            <groupId>com.google.gwt</groupId>
            <artifactId>gwt-dev</artifactId>
            <version>${gwt.version}</version>
          </dependency>
        </dependencies>
      </plugin>
      [...]
    </plugins>
  </build>
  [...]
</project>