diff --git a/akka-http-core/src/main/scala/akka/http/javadsl/ServerBinding.scala b/akka-http-core/src/main/scala/akka/http/javadsl/ServerBinding.scala
index a3bcbed642..9cfe0537a4 100644
--- a/akka-http-core/src/main/scala/akka/http/javadsl/ServerBinding.scala
+++ b/akka-http-core/src/main/scala/akka/http/javadsl/ServerBinding.scala
@@ -11,10 +11,10 @@ import akka.actor.ClassicActorSystemProvider
 import akka.annotation.DoNotInherit
 import akka.dispatch.ExecutionContexts
 import akka.Done
-import akka.util.JavaDurationConverters._
 
 import scala.concurrent.duration.FiniteDuration
 import scala.jdk.FutureConverters._
+import scala.jdk.DurationConverters._
 
 /**
  * Represents a prospective HTTP server binding.
@@ -92,7 +92,7 @@ class ServerBinding private[http] (delegate: akka.http.scaladsl.Http.ServerBindi
    */
   def whenTerminationSignalIssued: CompletionStage[java.time.Duration] =
     delegate.whenTerminationSignalIssued
-      .map(deadline => deadline.time.asJava)(ExecutionContexts.parasitic)
+      .map(deadline => deadline.time.toJava)(ExecutionContexts.parasitic)
       .asJava
 
   /**
@@ -119,8 +119,7 @@ class ServerBinding private[http] (delegate: akka.http.scaladsl.Http.ServerBindi
    * @param hardTerminationDeadline timeout after which all requests and connections shall be forcefully terminated
    */
   def addToCoordinatedShutdown(hardTerminationDeadline: java.time.Duration, system: ClassicActorSystemProvider): ServerBinding = {
-    import akka.util.JavaDurationConverters._
-    delegate.addToCoordinatedShutdown(hardTerminationDeadline.asScala)(system)
+    delegate.addToCoordinatedShutdown(hardTerminationDeadline.toScala)(system)
     this
   }
 }
diff --git a/akka-http-core/src/main/scala/akka/http/javadsl/settings/ConnectionPoolSettings.scala b/akka-http-core/src/main/scala/akka/http/javadsl/settings/ConnectionPoolSettings.scala
index 8781c9e721..e3b3c1f595 100644
--- a/akka-http-core/src/main/scala/akka/http/javadsl/settings/ConnectionPoolSettings.scala
+++ b/akka-http-core/src/main/scala/akka/http/javadsl/settings/ConnectionPoolSettings.scala
@@ -15,7 +15,6 @@ import akka.annotation.{ ApiMayChange, DoNotInherit }
 import akka.http.impl.settings.ConnectionPoolSettingsImpl
 import akka.http.impl.util.JavaMapping.Implicits._
 import akka.http.javadsl.ClientTransport
-import akka.util.JavaDurationConverters._
 
 /**
  * Public API but not intended for subclassing
@@ -27,7 +26,9 @@ abstract class ConnectionPoolSettings private[akka] () { self: ConnectionPoolSet
   def getMaxRetries: Int = maxRetries
   def getMaxOpenRequests: Int = maxOpenRequests
   def getPipeliningLimit: Int = pipeliningLimit
-  def getMaxConnectionLifetime: JDuration = maxConnectionLifetime.asJava
+  def getMaxConnectionLifetime: JDuration =
+    if (maxConnectionLifetime.isFinite) JDuration.ofNanos(maxConnectionLifetime.toNanos)
+    else JDuration.ZERO
   def getBaseConnectionBackoff: FiniteDuration = baseConnectionBackoff
   def getMaxConnectionBackoff: FiniteDuration = maxConnectionBackoff
   def getIdleTimeout: Duration = idleTimeout
diff --git a/akka-http/src/main/scala/akka/http/javadsl/common/SSLContextFactory.scala b/akka-http/src/main/scala/akka/http/javadsl/common/SSLContextFactory.scala
index 7cf65f461b..f1bbe71418 100644
--- a/akka-http/src/main/scala/akka/http/javadsl/common/SSLContextFactory.scala
+++ b/akka-http/src/main/scala/akka/http/javadsl/common/SSLContextFactory.scala
@@ -11,13 +11,13 @@ import java.nio.file.Path
 import javax.net.ssl.SSLContext
 import java.util.{ List => JList }
 import akka.http.scaladsl.common.{ SSLContextFactory => ScalaSSLContextFactory }
-import akka.util.JavaDurationConverters.JavaDurationOps
 import com.typesafe.config.Config
 
 import java.security.SecureRandom
 import java.time.Duration
 import java.util.Optional
 import javax.net.ssl.SSLEngine
+import scala.jdk.DurationConverters._
 import scala.jdk.CollectionConverters._
 import scala.jdk.OptionConverters.RichOptional
 
@@ -107,7 +107,7 @@ object SSLContextFactory {
    */
   @ApiMayChange
   def refreshingSSLEngineProvider(refreshAfter: Duration)(construct: akka.japi.function.Creator[SSLContext]): akka.japi.function.Creator[SSLEngine] =
-    () => ScalaSSLContextFactory.refreshingSSLEngineProvider(refreshAfter.asScala)(construct.create _)()
+    () => ScalaSSLContextFactory.refreshingSSLEngineProvider(refreshAfter.toScala)(construct.create _)()
 
   /**
    * Keeps a created SSLContext around for a `refreshAfter` period, sharing it among connections, then creates a new
@@ -122,5 +122,5 @@ object SSLContextFactory {
    */
   @ApiMayChange
   def refreshingSSLContextProvider(refreshAfter: Duration)(construct: akka.japi.function.Creator[SSLContext]): akka.japi.function.Creator[SSLContext] =
-    () => ScalaSSLContextFactory.refreshingSSLContextProvider(refreshAfter.asScala)(construct.create _)()
+    () => ScalaSSLContextFactory.refreshingSSLContextProvider(refreshAfter.toScala)(construct.create _)()
 }