<dependency>
<groupId>org.json4s</groupId>
<artifactId>json4s-ext_2.12</artifactId>
<version>3.6.8</version>
</dependency>
compile
|-- org.scala-lang:scala-library:2.12.8
|-- joda-time:joda-time:2.10.6
|-- org.joda:joda-convert:2.2.1
test