src/jdk.javadoc/share/classes/module-info.java

*** 24,33 ****
--- 24,35 ----
   */
  
  /** Defines the implementation of the
   *  {@link javax.tools.ToolProvider#getSystemDocumentationTool system documentation tool}
   *  and its command line equivalent, <em>javadoc</em>.
+  *
+  *  @since 9
   */
  module jdk.javadoc {
      requires transitive java.compiler;
      requires transitive jdk.compiler;
      requires java.xml;