diff --git a/cluster-metrics/src/test/scala/org/apache/pekko/cluster/metrics/ClusterMetricsRoutingSpec.scala b/cluster-metrics/src/test/scala/org/apache/pekko/cluster/metrics/ClusterMetricsRoutingSpec.scala
index 29547b593f..5546d14c62 100644
--- a/cluster-metrics/src/test/scala/org/apache/pekko/cluster/metrics/ClusterMetricsRoutingSpec.scala
+++ b/cluster-metrics/src/test/scala/org/apache/pekko/cluster/metrics/ClusterMetricsRoutingSpec.scala
@@ -28,10 +28,10 @@ class MetricsSelectorSpec extends AnyWordSpec with Matchers {
     override def capacity(nodeMetrics: Set[NodeMetrics]): Map[Address, Double] = Map.empty
   }
 
-  val a1 = Address("pekko", "sys", "a1", 2551)
-  val b1 = Address("pekko", "sys", "b1", 2551)
-  val c1 = Address("pekko", "sys", "c1", 2551)
-  val d1 = Address("pekko", "sys", "d1", 2551)
+  val a1 = Address("pekko", "sys", "a1", 7354)
+  val b1 = Address("pekko", "sys", "b1", 7354)
+  val c1 = Address("pekko", "sys", "c1", 7354)
+  val d1 = Address("pekko", "sys", "d1", 7354)
 
   val decayFactor = Some(0.18)
 
diff --git a/cluster-metrics/src/test/scala/org/apache/pekko/cluster/metrics/WeightedRouteesSpec.scala b/cluster-metrics/src/test/scala/org/apache/pekko/cluster/metrics/WeightedRouteesSpec.scala
index ccf8b40f88..8f92164152 100644
--- a/cluster-metrics/src/test/scala/org/apache/pekko/cluster/metrics/WeightedRouteesSpec.scala
+++ b/cluster-metrics/src/test/scala/org/apache/pekko/cluster/metrics/WeightedRouteesSpec.scala
@@ -35,10 +35,10 @@ class WeightedRouteesSpec extends PekkoSpec(ConfigFactory.parseString("""
     if (RARP(system).provider.remoteSettings.Artery.Enabled) "pekko"
     else "pekko.tcp"
 
-  val a1 = Address(protocol, "sys", "a1", 2551)
-  val b1 = Address(protocol, "sys", "b1", 2551)
-  val c1 = Address(protocol, "sys", "c1", 2551)
-  val d1 = Address(protocol, "sys", "d1", 2551)
+  val a1 = Address(protocol, "sys", "a1", 7354)
+  val b1 = Address(protocol, "sys", "b1", 7354)
+  val c1 = Address(protocol, "sys", "c1", 7354)
+  val d1 = Address(protocol, "sys", "d1", 7354)
 
   val routeeA = ActorSelectionRoutee(system.actorSelection(RootActorPath(a1) / "user" / "a"))
   val routeeB = ActorSelectionRoutee(system.actorSelection(RootActorPath(b1) / "user" / "b"))
diff --git a/cluster-typed/src/test/java/jdocs/org/apache/pekko/cluster/typed/BasicClusterExampleTest.java b/cluster-typed/src/test/java/jdocs/org/apache/pekko/cluster/typed/BasicClusterExampleTest.java
index b92d3d01e2..fe5445af20 100644
--- a/cluster-typed/src/test/java/jdocs/org/apache/pekko/cluster/typed/BasicClusterExampleTest.java
+++ b/cluster-typed/src/test/java/jdocs/org/apache/pekko/cluster/typed/BasicClusterExampleTest.java
@@ -45,7 +45,7 @@ public class BasicClusterExampleTest { // extends JUnitSuite {
               + "  remote.artery { \n"
               + "    canonical { \n"
               + "      hostname = \"127.0.0.1\" \n"
-              + "      port = 2551 \n"
+              + "      port = 7354 \n"
               + "    } \n"
               + "  } \n"
               + "}  \n");
@@ -131,7 +131,7 @@ public class BasicClusterExampleTest { // extends JUnitSuite {
 
     // #join-seed-nodes
     List<Address> seedNodes = new ArrayList<>();
-    seedNodes.add(AddressFromURIString.parse("pekko://ClusterSystem@127.0.0.1:2551"));
+    seedNodes.add(AddressFromURIString.parse("pekko://ClusterSystem@127.0.0.1:7354"));
     seedNodes.add(AddressFromURIString.parse("pekko://ClusterSystem@127.0.0.1:7355"));
 
     Cluster.get(system).manager().tell(new JoinSeedNodes(seedNodes));
diff --git a/cluster-typed/src/test/scala/docs/org/apache/pekko/cluster/typed/BasicClusterExampleSpec.scala b/cluster-typed/src/test/scala/docs/org/apache/pekko/cluster/typed/BasicClusterExampleSpec.scala
index 6e3a4a13e8..5e9dda4298 100644
--- a/cluster-typed/src/test/scala/docs/org/apache/pekko/cluster/typed/BasicClusterExampleSpec.scala
+++ b/cluster-typed/src/test/scala/docs/org/apache/pekko/cluster/typed/BasicClusterExampleSpec.scala
@@ -46,13 +46,13 @@ pekko {
   remote.artery {
     canonical {
       hostname = "127.0.0.1"
-      port = 2551
+      port = 7354
     }
   }
 
   cluster {
     seed-nodes = [
-      "pekko://ClusterSystem@127.0.0.1:2551",
+      "pekko://ClusterSystem@127.0.0.1:7354",
       "pekko://ClusterSystem@127.0.0.1:7355"]
     
     downing-provider-class = "org.apache.pekko.cluster.sbr.SplitBrainResolverProvider"
@@ -75,7 +75,7 @@ pekko {
     import pekko.cluster.typed.JoinSeedNodes
 
     val seedNodes: List[Address] =
-      List("pekko://ClusterSystem@127.0.0.1:2551", "pekko://ClusterSystem@127.0.0.1:7355").map(
+      List("pekko://ClusterSystem@127.0.0.1:7354", "pekko://ClusterSystem@127.0.0.1:7355").map(
         AddressFromURIString.parse)
     Cluster(system).manager ! JoinSeedNodes(seedNodes)
     // #join-seed-nodes
@@ -163,7 +163,7 @@ pekko {
   remote.artery {
     canonical {
       hostname = "127.0.0.1"
-      port = 2551
+      port = 7354
     }
   }
 }
diff --git a/cluster/jmx-client/pekko-cluster b/cluster/jmx-client/pekko-cluster
index 2bb59b63a4..ac347238fc 100755
--- a/cluster/jmx-client/pekko-cluster
+++ b/cluster/jmx-client/pekko-cluster
@@ -219,9 +219,9 @@ do
         printf "Examples: $0 localhost 9999 is-available\n"
         printf "          $0 localhost 9999 join pekko.tcp://MySystem@darkstar:7355\n"
         printf "          $0 localhost 9999 cluster-status\n"
-        printf "          $0 localhost 9999 -p 2551 is-available\n"
-        printf "          $0 localhost 9999 -p 2551 join pekko.tcp://MySystem@darkstar:7355\n"
-        printf "          $0 localhost 9999 -p 2551 cluster-status\n"
+        printf "          $0 localhost 9999 -p 7354 is-available\n"
+        printf "          $0 localhost 9999 -p 7354 join pekko.tcp://MySystem@darkstar:7355\n"
+        printf "          $0 localhost 9999 -p 7354 cluster-status\n"
         exit 1
         ;;
 esac
diff --git a/cluster/src/test/scala/org/apache/pekko/cluster/ClusterDomainEventPublisherSpec.scala b/cluster/src/test/scala/org/apache/pekko/cluster/ClusterDomainEventPublisherSpec.scala
index 3df03b3147..e2c828ad78 100644
--- a/cluster/src/test/scala/org/apache/pekko/cluster/ClusterDomainEventPublisherSpec.scala
+++ b/cluster/src/test/scala/org/apache/pekko/cluster/ClusterDomainEventPublisherSpec.scala
@@ -61,7 +61,7 @@ class ClusterDomainEventPublisherSpec
   val cJoining = TestMember(Address(protocol, "sys", "c", 7355), Joining, Set("GRP"))
   val cUp = cJoining.copy(status = Up)
   val cRemoved = cUp.copy(status = Removed)
-  val a51Up = TestMember(Address(protocol, "sys", "a", 2551), Up)
+  val a51Up = TestMember(Address(protocol, "sys", "a", 7354), Up)
   val dUp = TestMember(Address(protocol, "sys", "d", 7355), Up, Set("GRP"))
   val eUp = TestMember(Address(protocol, "sys", "e", 7355), Up, Set("GRP"), OtherDataCenter)
 
diff --git a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/DataEnvelopeSpec.scala b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/DataEnvelopeSpec.scala
index c48c080db8..29cf0ac607 100644
--- a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/DataEnvelopeSpec.scala
+++ b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/DataEnvelopeSpec.scala
@@ -24,7 +24,7 @@ import pekko.cluster.ddata.Replicator.Internal.DataEnvelope
 class DataEnvelopeSpec extends AnyWordSpec with Matchers {
   import PruningState._
 
-  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 2551), 1L)
+  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 7354), 1L)
   val node2 = UniqueAddress(node1.address.copy(port = Some(7355)), 2L)
   val node3 = UniqueAddress(node1.address.copy(port = Some(7356)), 3L)
   val node4 = UniqueAddress(node1.address.copy(port = Some(7357)), 4L)
diff --git a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/GCounterSpec.scala b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/GCounterSpec.scala
index d04649f707..51178dfe7f 100644
--- a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/GCounterSpec.scala
+++ b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/GCounterSpec.scala
@@ -22,7 +22,7 @@ import pekko.cluster.UniqueAddress
 import pekko.cluster.ddata.Replicator.Changed
 
 class GCounterSpec extends AnyWordSpec with Matchers {
-  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 2551), 1L)
+  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 7354), 1L)
   val node2 = UniqueAddress(node1.address.copy(port = Some(7355)), 2L)
   val node3 = UniqueAddress(node1.address.copy(port = Some(7356)), 3L)
 
diff --git a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/LWWMapSpec.scala b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/LWWMapSpec.scala
index e13375382b..e4f326968d 100644
--- a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/LWWMapSpec.scala
+++ b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/LWWMapSpec.scala
@@ -24,7 +24,7 @@ import pekko.cluster.ddata.Replicator.Changed
 class LWWMapSpec extends AnyWordSpec with Matchers {
   import LWWRegister.defaultClock
 
-  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 2551), 1L)
+  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 7354), 1L)
   val node2 = UniqueAddress(node1.address.copy(port = Some(7355)), 2L)
 
   "A LWWMap" must {
diff --git a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/LWWRegisterSpec.scala b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/LWWRegisterSpec.scala
index df5465c757..864655d026 100644
--- a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/LWWRegisterSpec.scala
+++ b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/LWWRegisterSpec.scala
@@ -24,7 +24,7 @@ import pekko.cluster.ddata.Replicator.Changed
 class LWWRegisterSpec extends AnyWordSpec with Matchers {
   import LWWRegister.defaultClock
 
-  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 2551), 1L)
+  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 7354), 1L)
   val node2 = UniqueAddress(node1.address.copy(port = Some(7355)), 2L)
 
   "A LWWRegister" must {
diff --git a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/LotsOfDataBot.scala b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/LotsOfDataBot.scala
index bb830c5d67..c8b2b7136b 100644
--- a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/LotsOfDataBot.scala
+++ b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/LotsOfDataBot.scala
@@ -33,7 +33,7 @@ object LotsOfDataBot {
 
   def main(args: Array[String]): Unit = {
     if (args.isEmpty)
-      startup(Seq("2551", "7355", "0"))
+      startup(Seq("7354", "7355", "0"))
     else
       startup(args.toIndexedSeq)
   }
@@ -57,7 +57,7 @@ object LotsOfDataBot {
 
             pekko.cluster {
               seed-nodes = [
-                "pekko://ClusterSystem@127.0.0.1:2551",
+                "pekko://ClusterSystem@127.0.0.1:7354",
                 "pekko://ClusterSystem@127.0.0.1:7355"]
 
               downing-provider-class = org.apache.pekko.cluster.testkit.AutoDowning
diff --git a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/ORMapSpec.scala b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/ORMapSpec.scala
index f2b1dd82f2..f40e9a16d0 100644
--- a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/ORMapSpec.scala
+++ b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/ORMapSpec.scala
@@ -24,7 +24,7 @@ import pekko.cluster.ddata.Replicator.Changed
 
 class ORMapSpec extends AnyWordSpec with Matchers {
 
-  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 2551), 1L)
+  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 7354), 1L)
   val node2 = UniqueAddress(node1.address.copy(port = Some(7355)), 2L)
 
   "A ORMap" must {
diff --git a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/ORMultiMapSpec.scala b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/ORMultiMapSpec.scala
index a469da028c..15653f7f67 100644
--- a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/ORMultiMapSpec.scala
+++ b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/ORMultiMapSpec.scala
@@ -23,7 +23,7 @@ import pekko.cluster.ddata.Replicator.Changed
 
 class ORMultiMapSpec extends AnyWordSpec with Matchers {
 
-  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 2551), 1L)
+  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 7354), 1L)
   val node2 = UniqueAddress(node1.address.copy(port = Some(7355)), 2L)
 
   "A ORMultiMap" must {
diff --git a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/ORSetSpec.scala b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/ORSetSpec.scala
index f8a1cee29d..b04164324c 100644
--- a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/ORSetSpec.scala
+++ b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/ORSetSpec.scala
@@ -25,7 +25,7 @@ import pekko.cluster.ddata.Replicator.Changed
 
 class ORSetSpec extends AnyWordSpec with Matchers {
 
-  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 2551), 1L)
+  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 7354), 1L)
   val node2 = UniqueAddress(node1.address.copy(port = Some(7355)), 2L)
   val node3 = UniqueAddress(node1.address.copy(port = Some(7356)), 3L)
 
diff --git a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/PNCounterMapSpec.scala b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/PNCounterMapSpec.scala
index 6e062dd0f0..3f8468db86 100644
--- a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/PNCounterMapSpec.scala
+++ b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/PNCounterMapSpec.scala
@@ -23,7 +23,7 @@ import pekko.cluster.ddata.Replicator.Changed
 
 class PNCounterMapSpec extends AnyWordSpec with Matchers {
 
-  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 2551), 1L)
+  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 7354), 1L)
   val node2 = UniqueAddress(node1.address.copy(port = Some(7355)), 2L)
 
   "A PNCounterMap" must {
diff --git a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/PNCounterSpec.scala b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/PNCounterSpec.scala
index 0ef9d4f761..7990808c51 100644
--- a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/PNCounterSpec.scala
+++ b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/PNCounterSpec.scala
@@ -22,7 +22,7 @@ import pekko.cluster.UniqueAddress
 import pekko.cluster.ddata.Replicator.Changed
 
 class PNCounterSpec extends AnyWordSpec with Matchers {
-  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 2551), 1L)
+  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 7354), 1L)
   val node2 = UniqueAddress(node1.address.copy(port = Some(7355)), 2L)
 
   "A PNCounter" must {
diff --git a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/PruningStateSpec.scala b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/PruningStateSpec.scala
index 24ab7c978b..d6f3c7cc69 100644
--- a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/PruningStateSpec.scala
+++ b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/PruningStateSpec.scala
@@ -23,7 +23,7 @@ import pekko.cluster.UniqueAddress
 class PruningStateSpec extends AnyWordSpec with Matchers {
   import PruningState._
 
-  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 2551), 1L)
+  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 7354), 1L)
   val node2 = UniqueAddress(node1.address.copy(port = Some(7355)), 2L)
   val node3 = UniqueAddress(node1.address.copy(port = Some(7356)), 3L)
   val node4 = UniqueAddress(node1.address.copy(port = Some(7357)), 4L)
diff --git a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/VersionVectorSpec.scala b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/VersionVectorSpec.scala
index ff65f934b4..b1a3d2c07a 100644
--- a/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/VersionVectorSpec.scala
+++ b/distributed-data/src/test/scala/org/apache/pekko/cluster/ddata/VersionVectorSpec.scala
@@ -29,7 +29,7 @@ class VersionVectorSpec
     with Matchers
     with BeforeAndAfterAll {
 
-  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 2551), 1L)
+  val node1 = UniqueAddress(Address("pekko", "Sys", "localhost", 7354), 1L)
   val node2 = UniqueAddress(node1.address.copy(port = Some(7355)), 2L)
   val node3 = UniqueAddress(node1.address.copy(port = Some(7356)), 3L)
   val node4 = UniqueAddress(node1.address.copy(port = Some(7357)), 4L)
diff --git a/docs/src/test/java/jdocs/cluster/StatsSampleOneMasterMain.java b/docs/src/test/java/jdocs/cluster/StatsSampleOneMasterMain.java
index 07a05c6ed3..162a4784df 100644
--- a/docs/src/test/java/jdocs/cluster/StatsSampleOneMasterMain.java
+++ b/docs/src/test/java/jdocs/cluster/StatsSampleOneMasterMain.java
@@ -28,7 +28,7 @@ public class StatsSampleOneMasterMain {
 
   public static void main(String[] args) {
     if (args.length == 0) {
-      startup(new String[] {"2551", "7355", "0"});
+      startup(new String[] {"7354", "7355", "0"});
       StatsSampleOneMasterClientMain.main(new String[0]);
     } else {
       startup(args);