diff --git a/akka-actor/src/main/scala/akka/actor/ActorSystem.scala b/akka-actor/src/main/scala/akka/actor/ActorSystem.scala
index 9eace92b95..5e296f9a20 100644
--- a/akka-actor/src/main/scala/akka/actor/ActorSystem.scala
+++ b/akka-actor/src/main/scala/akka/actor/ActorSystem.scala
@@ -1000,6 +1000,7 @@ private[akka] class ActorSystemImpl(
       "akka-coordination",
       "akka-discovery",
       "akka-distributed-data",
+      "akka-testkit",
       "akka-multi-node-testkit",
       "akka-osgi",
       "akka-persistence",