If you are using SBT, Maven or Gradle, add the following dependency to the _dependencies_ section of your
project descriptor to access the Vert.x Core API and enable the Scala support:

* SBT (in your `build.sbt` file):

[source,scala,subs="+attributes"]
----
libraryDependencies += "io.vertx" %% "vertx-lang-scala" % "3.9.1"
----

* Maven (in your `pom.xml`):

[source,xml,subs="+attributes"]
----
<dependency>
  <groupId>io.vertx</groupId>
  <artifactId>vertx-lang-scala_2.12</artifactId>
  <version>3.9.1</version>
</dependency>
----

* Gradle (in your `build.gradle` file):

[source,groovy,subs="+attributes"]
----
compile "io.vertx:vertx-lang-scala_2.12:3.9.1"
----