diff --git a/README.md b/README.md
index 7ba9a17..0d3e301 100644
--- a/README.md
+++ b/README.md
@@ -10,11 +10,11 @@ page.
 
 Prerequisites:
 - JDK 8
-- sbt 0.13.13 or higher
+- sbt 1.3.x or higher
 
 Open a console and run the following command to apply this template:
  ```
-sbt -Dsbt.version=1.2.8 new akka/akka-http-quickstart-scala.g8
+sbt -Dsbt.version=1.3.13 new akka/akka-http-quickstart-scala.g8
  ```
 
 This template will prompt for the following parameters. Press `Enter` if the default values suit you:
diff --git a/project/build.properties b/project/build.properties
index 6adcdc7..0837f7a 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.3.3
+sbt.version=1.3.13
diff --git a/src/main/g8/default.properties b/src/main/g8/default.properties
index 22f0fc1..9e89a1d 100644
--- a/src/main/g8/default.properties
+++ b/src/main/g8/default.properties
@@ -1,6 +1,6 @@
 name=My Akka HTTP Project
 description=This is a seed project which creates a basic build for an Akka HTTP application using Scala.
-scala_version=2.13.1
+scala_version=2.13.3
 akka_http_version=maven(com.typesafe.akka, akka-http-core_2.13, stable)
 akka_version=maven(com.typesafe.akka, akka-actor-typed_2.13, stable)
 organization=com.example
diff --git a/src/main/g8/project/build.properties b/src/main/g8/project/build.properties
index 6adcdc7..0837f7a 100644
--- a/src/main/g8/project/build.properties
+++ b/src/main/g8/project/build.properties
@@ -1 +1 @@
-sbt.version=1.3.3
+sbt.version=1.3.13
diff --git a/src/main/g8/src/main/scala/$package$/QuickstartApp.scala b/src/main/g8/src/main/scala/$package$/QuickstartApp.scala
index db59cf9..4001052 100644
--- a/src/main/g8/src/main/scala/$package$/QuickstartApp.scala
+++ b/src/main/g8/src/main/scala/$package$/QuickstartApp.scala
@@ -1,7 +1,6 @@
 package $package$
 
 import akka.actor.typed.ActorSystem
-import akka.actor.typed.scaladsl.adapter._
 import akka.actor.typed.scaladsl.Behaviors
 import akka.http.scaladsl.Http
 import akka.http.scaladsl.server.Route
@@ -12,12 +11,11 @@ import scala.util.Success
 //#main-class
 object QuickstartApp {
   //#start-http-server
-  private def startHttpServer(routes: Route, system: ActorSystem[_]): Unit = {
+  private def startHttpServer(routes: Route)(implicit system: ActorSystem[_]): Unit = {
     // Akka HTTP still needs a classic ActorSystem to start
-    implicit val classicSystem: akka.actor.ActorSystem = system.toClassic
     import system.executionContext
 
-    val futureBinding = Http().bindAndHandle(routes, "localhost", 8080)
+    val futureBinding = Http().newServerAt("localhost", 8080).bind(routes)
     futureBinding.onComplete {
       case Success(binding) =>
         val address = binding.localAddress
@@ -35,7 +33,7 @@ object QuickstartApp {
       context.watch(userRegistryActor)
 
       val routes = new UserRoutes(userRegistryActor)(context.system)
-      startHttpServer(routes.userRoutes, context.system)
+      startHttpServer(routes.userRoutes)(context.system)
 
       Behaviors.empty
     }
diff --git a/src/main/g8/src/test/scala/$package$/UserRoutesSpec.scala b/src/main/g8/src/test/scala/$package$/UserRoutesSpec.scala
index 115ee55..ef1ced3 100644
--- a/src/main/g8/src/test/scala/$package$/UserRoutesSpec.scala
+++ b/src/main/g8/src/test/scala/$package$/UserRoutesSpec.scala
@@ -8,7 +8,6 @@ import akka.http.scaladsl.model._
 import akka.http.scaladsl.testkit.ScalatestRouteTest
 import org.scalatest.concurrent.ScalaFutures
 import org.scalatest.{ Matchers, WordSpec }
-import akka.actor.typed.scaladsl.adapter._
 
 //#set-up
 class UserRoutesSpec extends WordSpec with Matchers with ScalaFutures with ScalatestRouteTest {
@@ -19,7 +18,7 @@ class UserRoutesSpec extends WordSpec with Matchers with ScalaFutures with Scala
   lazy val testKit = ActorTestKit()
   implicit def typedSystem = testKit.system
   override def createActorSystem(): akka.actor.ActorSystem =
-    testKit.system.toClassic
+    testKit.system.classicSystem
 
   // Here we need to implement all the abstract members of UserRoutes.
   // We use the real UserRegistryActor to test it while we hit the Routes,