<dependency>
  <groupId>com.typesafe.akka</groupId>
  <artifactId>akka-actor_2.11</artifactId>
  <version>2.5.8</version>
</dependency>

implementation 'com.typesafe.akka:akka-actor_2.11:2.5.8'

implementation("com.typesafe.akka:akka-actor_2.11:2.5.8")

libraryDependencies += "com.typesafe.akka" % "akka-actor_2.11" % "2.5.8"

@Grapes(
  @Grab(group='com.typesafe.akka', module='akka-actor_2.11', version='2.5.8')
)

<dependency org="com.typesafe.akka" name="akka-actor_2.11" rev="2.5.8" />

[com.typesafe.akka/akka-actor_2.11 "2.5.8"]

'com.typesafe.akka:akka-actor_2.11:jar:2.5.8'