diff --git a/authorization/src/main/kotlin/org/modelix/authorization/KtorAuthUtils.kt b/authorization/src/main/kotlin/org/modelix/authorization/KtorAuthUtils.kt
index 1f079b3c6d..589654186d 100644
--- a/authorization/src/main/kotlin/org/modelix/authorization/KtorAuthUtils.kt
+++ b/authorization/src/main/kotlin/org/modelix/authorization/KtorAuthUtils.kt
@@ -15,7 +15,7 @@ import io.ktor.server.auth.parseAuthorizationHeader
 import io.ktor.server.auth.principal
 import io.ktor.server.request.header
 import io.ktor.server.routing.Route
-import io.ktor.util.pipeline.PipelineContext
+import io.ktor.server.routing.RoutingContext
 import org.modelix.authorization.permissions.PermissionEvaluator
 import org.modelix.authorization.permissions.PermissionInstanceReference
 import org.modelix.authorization.permissions.PermissionParts
@@ -35,7 +35,7 @@ fun Route.requiresLogin(body: Route.() -> Unit) {
     }
 }
 
-fun PipelineContext<*, ApplicationCall>.checkPermission(permissionParts: PermissionParts) {
+fun RoutingContext.checkPermission(permissionParts: PermissionParts) {
     call.checkPermission(permissionParts)
 }
 
@@ -83,7 +83,7 @@ fun ApplicationCall.jwtFromHeaders(): DecodedJWT? {
 
 fun ApplicationCall.jwt() = principal<AccessTokenPrincipal>()?.jwt ?: jwtFromHeaders()
 
-fun PipelineContext<Unit, ApplicationCall>.getUserName(): String? {
+fun RoutingContext.getUserName(): String? {
     return call.getUserName()
 }
 
diff --git a/authorization/src/main/kotlin/org/modelix/authorization/PermissionManagementPage.kt b/authorization/src/main/kotlin/org/modelix/authorization/PermissionManagementPage.kt
index 005577db69..7e85668efb 100644
--- a/authorization/src/main/kotlin/org/modelix/authorization/PermissionManagementPage.kt
+++ b/authorization/src/main/kotlin/org/modelix/authorization/PermissionManagementPage.kt
@@ -11,10 +11,11 @@ import io.ktor.server.request.receiveParameters
 import io.ktor.server.response.respond
 import io.ktor.server.response.respondRedirect
 import io.ktor.server.routing.Route
+import io.ktor.server.routing.RoutingContext
+import io.ktor.server.routing.application
 import io.ktor.server.routing.get
 import io.ktor.server.routing.post
 import io.ktor.server.routing.route
-import io.ktor.util.pipeline.PipelineContext
 import kotlinx.html.FlowContent
 import kotlinx.html.a
 import kotlinx.html.body
@@ -83,7 +84,7 @@ fun Route.installPermissionManagementHandlers() {
                 }
             }
             route("{resourceId}") {
-                fun PipelineContext<*, ApplicationCall>.resourceId(): String = call.parameters["resourceId"]!!
+                fun RoutingContext.resourceId(): String = call.parameters["resourceId"]!!
                 get("/") {
                     val resourceId = resourceId()
                     val plugin = call.application.plugin(ModelixAuthorization)
@@ -240,8 +241,8 @@ fun Route.installPermissionManagementHandlers() {
                 }
                 route("permissions") {
                     route("{permissionName}") {
-                        fun PipelineContext<*, ApplicationCall>.permissionName(): String = call.parameters["permissionName"]!!
-                        fun PipelineContext<*, ApplicationCall>.permissionId(): String = "${resourceId()}/${permissionName()}"
+                        fun RoutingContext.permissionName(): String = call.parameters["permissionName"]!!
+                        fun RoutingContext.permissionId(): String = "${resourceId()}/${permissionName()}"
                         post("grant") {
                             val formParameters = call.receiveParameters()
                             grant(formParameters["userId"], formParameters["roleId"], permissionId())
@@ -300,34 +301,34 @@ fun FlowContent.buildPermissionIncludesList(currentResource: ResourceInstanceRef
     }
 }
 
-private fun PipelineContext<*, ApplicationCall>.grant(userId: String?, roleId: String?, permissionId: String) {
+private fun RoutingContext.grant(userId: String?, roleId: String?, permissionId: String) {
     val userId = userId?.takeIf { it.isNotBlank() }
     val roleId = roleId?.takeIf { it.isNotBlank() }
     require(userId != null || roleId != null) { "userId or roleId required" }
     call.checkCanGranPermission(permissionId)
 
     if (userId != null) {
-        application.plugin(ModelixAuthorization).config.accessControlPersistence.update {
+        call.application.plugin(ModelixAuthorization).config.accessControlPersistence.update {
             it.withGrantToUser(userId, permissionId)
         }
     }
     if (roleId != null) {
-        application.plugin(ModelixAuthorization).config.accessControlPersistence.update {
+        call.application.plugin(ModelixAuthorization).config.accessControlPersistence.update {
             it.withGrantToRole(roleId, permissionId)
         }
     }
 }
 
-private fun PipelineContext<*, ApplicationCall>.removeGrant(userId: String?, roleId: String?, permissionId: String) {
+private fun RoutingContext.removeGrant(userId: String?, roleId: String?, permissionId: String) {
     require(userId != null || roleId != null) { "userId or roleId required" }
     call.checkCanGranPermission(permissionId)
     if (userId != null) {
-        application.plugin(ModelixAuthorization).config.accessControlPersistence.update {
+        call.application.plugin(ModelixAuthorization).config.accessControlPersistence.update {
             it.withoutGrantToUser(userId, permissionId)
         }
     }
     if (roleId != null) {
-        application.plugin(ModelixAuthorization).config.accessControlPersistence.update {
+        call.application.plugin(ModelixAuthorization).config.accessControlPersistence.update {
             it.withoutGrantToUser(roleId, permissionId)
         }
     }
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 6698719ebb..b31ffdcaea 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -26,7 +26,7 @@ docker-compose = { id = "com.avast.gradle.docker-compose" , version = "0.17.12"
 [versions]
 kotlin = "2.1.0"
 kotlinCoroutines="1.9.0"
-ktor="2.3.12"
+ktor="3.0.3"
 kotlinHtml="0.8.0"
 kotlinSerialization="1.7.3"
 ignite="2.16.0"
diff --git a/kotlin-js-store/yarn.lock b/kotlin-js-store/yarn.lock
index d9a3c2e932..e96738b8d7 100644
--- a/kotlin-js-store/yarn.lock
+++ b/kotlin-js-store/yarn.lock
@@ -60,13 +60,6 @@ abab@^2.0.6:
   resolved "https://registry.yarnpkg.com/abab/-/abab-2.0.6.tgz#41b80f2c871d19686216b82309231cfd3cb3d291"
   integrity sha512-j2afSsaIENvHZN2B8GOpF566vZ5WVk5opAiMTvWgaQT8DkbOqsTfvNAvHoRGU2zzP8cPoqys+xHTRDWW8L+/BA==
 
-abort-controller@3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/abort-controller/-/abort-controller-3.0.0.tgz#eaf54d53b62bae4138e809ca225c8439a6efb392"
-  integrity sha512-h8lQ8tacZYnR3vNQTgibj+tODHI5/+l06Au2Pcriv/Gmet0eaj4TwWH41sO9wnHDiQsEj19q0drzdWdeAHtweg==
-  dependencies:
-    event-target-shim "^5.0.0"
-
 acorn-globals@^7.0.0:
   version "7.0.1"
   resolved "https://registry.yarnpkg.com/acorn-globals/-/acorn-globals-7.0.1.tgz#0dbf05c44fa7c94332914c02066d5beff62c40c3"
@@ -336,11 +329,6 @@ esutils@^2.0.2:
   resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.3.tgz#74d2eb4de0b8da1293711910d50775b9b710ef64"
   integrity sha512-kVscqXk4OCp68SZ0dkgEKVi6/8ij300KBWTJq32P/dYeWTSwK41WyTxalN1eRmA5Z9UU/LX9D7FWSmV9SAYx6g==
 
-event-target-shim@^5.0.0:
-  version "5.0.1"
-  resolved "https://registry.yarnpkg.com/event-target-shim/-/event-target-shim-5.0.1.tgz#5d4d3ebdf9583d63a5333ce2deb7480ab2b05789"
-  integrity sha512-i/2XbnSz/uxRCU6+NdVJgKWDTM427+MqYbkQzD321DuCQJUqOuJKIA0IM2+W2xtYHdKOmZ4dR6fExsd4SXL+WQ==
-
 fast-levenshtein@~2.0.6:
   version "2.0.6"
   resolved "https://registry.yarnpkg.com/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz#3d8a5c66883a16a30ca8643e851f19baa7797917"
@@ -650,13 +638,6 @@ ms@^2.1.3:
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.3.tgz#574c8138ce1d2b5861f0b44579dbadd60c6615b2"
   integrity sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==
 
-node-fetch@2.6.7:
-  version "2.6.7"
-  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.7.tgz#24de9fba827e3b4ae44dc8b20256a379160052ad"
-  integrity sha512-ZjMPFEfVx5j+y2yF35Kzx5sF7kDzxuDj6ziH4FFbOp87zKDZNx8yExJIb05OGF4Nlt9IHFIMBkRl41VdvcNdbQ==
-  dependencies:
-    whatwg-url "^5.0.0"
-
 normalize-path@^3.0.0, normalize-path@~3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-3.0.0.tgz#0dcd69ff23a1c9b11fd0978316644a0388216a65"
@@ -862,11 +843,6 @@ tr46@^3.0.0:
   dependencies:
     punycode "^2.1.1"
 
-tr46@~0.0.3:
-  version "0.0.3"
-  resolved "https://registry.yarnpkg.com/tr46/-/tr46-0.0.3.tgz#8184fd347dac9cdc185992f3a6622e14b9d9ab6a"
-  integrity sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw==
-
 tslib@^1.11.1:
   version "1.14.1"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.14.1.tgz#cf2d38bdc34a134bcaf1091c41f6619e2f672d00"
@@ -914,11 +890,6 @@ w3c-xmlserializer@^3.0.0:
   dependencies:
     xml-name-validator "^4.0.0"
 
-webidl-conversions@^3.0.0:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-3.0.1.tgz#24534275e2a7bc6be7bc86611cc16ae0a5654871"
-  integrity sha512-2JAn3z8AR6rjK8Sm8orRC0h/bcl/DqL7tRPdGZ4I1CjdF+EaMLmYxBHyXuKL849eucPFhvBoxMsflfOb8kxaeQ==
-
 webidl-conversions@^7.0.0:
   version "7.0.0"
   resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-7.0.0.tgz#256b4e1882be7debbf01d05f0aa2039778ea080a"
@@ -944,14 +915,6 @@ whatwg-url@^11.0.0:
     tr46 "^3.0.0"
     webidl-conversions "^7.0.0"
 
-whatwg-url@^5.0.0:
-  version "5.0.0"
-  resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-5.0.0.tgz#966454e8765462e37644d3626f6742ce8b70965d"
-  integrity sha512-saE57nupxk6v3HY35+jzBwYa0rKSy0XR8JSxZPwgLr7ys0IBzhGviA1/TUGJLmSVqs8pb9AnvICXEuOHLprYTw==
-  dependencies:
-    tr46 "~0.0.3"
-    webidl-conversions "^3.0.0"
-
 word-wrap@~1.2.3:
   version "1.2.3"
   resolved "https://registry.yarnpkg.com/word-wrap/-/word-wrap-1.2.3.tgz#610636f6b1f703891bd34771ccb17fb93b47079c"
@@ -976,12 +939,7 @@ wrappy@1:
   resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
   integrity sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==
 
-ws@8.5.0:
-  version "8.5.0"
-  resolved "https://registry.yarnpkg.com/ws/-/ws-8.5.0.tgz#bfb4be96600757fe5382de12c670dab984a1ed4f"
-  integrity sha512-BWX0SWVgLPzYwF8lTzEy1egjhS4S4OEAHfsO8o65WOVsrnSRGaSiUaa9e0ggGlkMTtBlmOpEXiie9RUcBO86qg==
-
-ws@^8.17.1:
+ws@8.18.0, ws@^8.17.1:
   version "8.18.0"
   resolved "https://registry.yarnpkg.com/ws/-/ws-8.18.0.tgz#0d7505a6eafe2b0e712d232b42279f53bc289bbc"
   integrity sha512-8VbfWfHLbbwu3+N6OKsOMpBdT4kXPDDB9cJk2bJ6mh9ucxdlnNvH1e+roYkKmN9Nxw2yjz7VzeO9oOz2zJ04Pw==
diff --git a/model-client-js-test/replicated-model-test/src/ReplicatedModelJS.test.ts b/model-client-js-test/replicated-model-test/src/ReplicatedModelJS.test.ts
index 99f77fbf38..ba34f7bb3d 100644
--- a/model-client-js-test/replicated-model-test/src/ReplicatedModelJS.test.ts
+++ b/model-client-js-test/replicated-model-test/src/ReplicatedModelJS.test.ts
@@ -10,6 +10,8 @@ type ReplicatedModelJS = org.modelix.model.client2.ReplicatedModelJS
 let client: ClientJS | undefined;
 let replicatedModel: ReplicatedModelJS | undefined;
 
+jest.setTimeout(60000)
+
 beforeEach(async () => {
   const repositoryId = randomUUID()
   client = await connectClient(MODEL_SERVER_URL)
@@ -33,7 +35,7 @@ test("replicated model uses user set in client", async () => {
   const versionInformation = await replicatedModel!.getCurrentVersionInformation()
   const lastAuthor = versionInformation.author
   expect(lastAuthor).toBe(userId);
-});
+}, );
 
 test("replicated model returns user set in client", async () => {
   const versionInformation = await replicatedModel!.getCurrentVersionInformation()
diff --git a/model-client/src/jvmMain/kotlin/org/modelix/model/client/RestWebModelClient.kt b/model-client/src/jvmMain/kotlin/org/modelix/model/client/RestWebModelClient.kt
index a2f5d5839f..9b30ae16bf 100644
--- a/model-client/src/jvmMain/kotlin/org/modelix/model/client/RestWebModelClient.kt
+++ b/model-client/src/jvmMain/kotlin/org/modelix/model/client/RestWebModelClient.kt
@@ -27,6 +27,7 @@ import io.ktor.util.reflect.TypeInfo
 import io.ktor.utils.io.ByteReadChannel
 import io.ktor.utils.io.charsets.Charset
 import io.ktor.utils.io.core.readText
+import io.ktor.utils.io.readRemaining
 import kotlinx.coroutines.CancellationException
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
@@ -53,25 +54,6 @@ import java.net.URLEncoder
 import java.nio.charset.StandardCharsets
 import java.util.LinkedList
 import java.util.concurrent.atomic.AtomicInteger
-import kotlin.collections.ArrayList
-import kotlin.collections.HashMap
-import kotlin.collections.Iterable
-import kotlin.collections.LinkedHashMap
-import kotlin.collections.List
-import kotlin.collections.Map
-import kotlin.collections.MutableList
-import kotlin.collections.MutableMap
-import kotlin.collections.Set
-import kotlin.collections.component1
-import kotlin.collections.component2
-import kotlin.collections.emptyList
-import kotlin.collections.emptySet
-import kotlin.collections.filter
-import kotlin.collections.forEach
-import kotlin.collections.iterator
-import kotlin.collections.minus
-import kotlin.collections.plus
-import kotlin.collections.set
 import kotlin.time.Duration
 import kotlin.time.Duration.Companion.minutes
 import kotlin.time.Duration.Companion.seconds
@@ -157,8 +139,8 @@ class RestWebModelClient @JvmOverloads constructor(
                         contentType: ContentType,
                         charset: Charset,
                         typeInfo: TypeInfo,
-                        value: Any,
-                    ): OutgoingContent {
+                        value: Any?,
+                    ): OutgoingContent? {
                         return TextContent(value.toString(), contentType)
                     }
                 },
diff --git a/model-server-api/src/commonTest/kotlin/org/modelix/model/server/api/v2/VersionDeltaStreamV2Test.kt b/model-server-api/src/commonTest/kotlin/org/modelix/model/server/api/v2/VersionDeltaStreamV2Test.kt
index b7476225fe..a530f92d4a 100644
--- a/model-server-api/src/commonTest/kotlin/org/modelix/model/server/api/v2/VersionDeltaStreamV2Test.kt
+++ b/model-server-api/src/commonTest/kotlin/org/modelix/model/server/api/v2/VersionDeltaStreamV2Test.kt
@@ -1,8 +1,8 @@
 package org.modelix.model.server.api.v2
 
 import io.ktor.util.cio.use
-import io.ktor.util.toByteArray
 import io.ktor.utils.io.ByteChannel
+import io.ktor.utils.io.toByteArray
 import io.ktor.utils.io.writeFully
 import io.ktor.utils.io.writeStringUtf8
 import kotlinx.coroutines.flow.emptyFlow
diff --git a/model-server/src/main/kotlin/org/modelix/model/server/Main.kt b/model-server/src/main/kotlin/org/modelix/model/server/Main.kt
index 673c857289..b6fa31e4b9 100644
--- a/model-server/src/main/kotlin/org/modelix/model/server/Main.kt
+++ b/model-server/src/main/kotlin/org/modelix/model/server/Main.kt
@@ -8,14 +8,13 @@ import io.ktor.http.HttpStatusCode
 import io.ktor.serialization.kotlinx.json.json
 import io.ktor.server.application.Application
 import io.ktor.server.application.ApplicationCall
-import io.ktor.server.application.call
 import io.ktor.server.application.install
+import io.ktor.server.engine.connector
 import io.ktor.server.engine.embeddedServer
 import io.ktor.server.http.content.staticResources
 import io.ktor.server.netty.Netty
-import io.ktor.server.netty.NettyApplicationEngine
-import io.ktor.server.plugins.callloging.CallLogging
-import io.ktor.server.plugins.callloging.processingTimeMillis
+import io.ktor.server.plugins.calllogging.CallLogging
+import io.ktor.server.plugins.calllogging.processingTimeMillis
 import io.ktor.server.plugins.contentnegotiation.ContentNegotiation
 import io.ktor.server.plugins.cors.routing.CORS
 import io.ktor.server.plugins.forwardedheaders.ForwardedHeaders
@@ -27,7 +26,6 @@ import io.ktor.server.request.path
 import io.ktor.server.resources.Resources
 import io.ktor.server.response.respondText
 import io.ktor.server.routing.IgnoreTrailingSlash
-import io.ktor.server.routing.Routing
 import io.ktor.server.routing.get
 import io.ktor.server.routing.routing
 import io.ktor.server.websocket.WebSockets
@@ -69,9 +67,9 @@ import java.io.File
 import java.io.FileReader
 import java.io.IOException
 import java.nio.charset.StandardCharsets
-import java.time.Duration
 import java.util.Properties
 import javax.sql.DataSource
+import kotlin.time.Duration.Companion.seconds
 
 object Main {
     private val LOG = LoggerFactory.getLogger(Main::class.java)
@@ -173,12 +171,10 @@ object Main {
             val modelReplicationServer = ModelReplicationServer(repositoriesManager)
             val metricsApi = MetricsApiImpl()
 
-            val configureNetty: NettyApplicationEngine.Configuration.() -> Unit = {
-                this.responseWriteTimeoutSeconds = cmdLineArgs.responseWriteTimeoutSeconds
-            }
-
-            val ktorServer: NettyApplicationEngine = embeddedServer(Netty, port = port, configure = configureNetty) {
-                install(Routing)
+            val ktorServer = embeddedServer(Netty, configure = {
+                connector { this.port = port }
+                responseWriteTimeoutSeconds = cmdLineArgs.responseWriteTimeoutSeconds
+            }) {
                 install(ModelixAuthorization) {
                     permissionSchema = ModelServerPermissionSchema.SCHEMA
                     installStatusPages = false
@@ -205,8 +201,8 @@ object Main {
                 // https://opensource.zalando.com/restful-api-guidelines/#136
                 install(IgnoreTrailingSlash)
                 install(WebSockets) {
-                    pingPeriod = Duration.ofSeconds(30)
-                    timeout = Duration.ofSeconds(30)
+                    pingPeriod = 30.seconds
+                    timeout = 30.seconds
                     maxFrameSize = Long.MAX_VALUE
                     masking = false
                 }
diff --git a/model-server/src/main/kotlin/org/modelix/model/server/handlers/AboutApiImpl.kt b/model-server/src/main/kotlin/org/modelix/model/server/handlers/AboutApiImpl.kt
index 8f89137182..a40e6d8281 100644
--- a/model-server/src/main/kotlin/org/modelix/model/server/handlers/AboutApiImpl.kt
+++ b/model-server/src/main/kotlin/org/modelix/model/server/handlers/AboutApiImpl.kt
@@ -1,16 +1,14 @@
 package org.modelix.model.server.handlers
 
-import io.ktor.server.application.ApplicationCall
-import io.ktor.server.application.call
 import io.ktor.server.response.respond
-import io.ktor.util.pipeline.PipelineContext
+import io.ktor.server.routing.RoutingContext
 import org.modelix.model.server.MODELIX_VERSION
 
 /**
  * Responding information about the model server.
  */
 object AboutApiImpl : AboutApi() {
-    override suspend fun PipelineContext<Unit, ApplicationCall>.getAboutInformationV1() {
+    override suspend fun RoutingContext.getAboutInformationV1() {
         val about = AboutV1(MODELIX_VERSION)
         call.respond(about)
     }
diff --git a/model-server/src/main/kotlin/org/modelix/model/server/handlers/HealthApiImpl.kt b/model-server/src/main/kotlin/org/modelix/model/server/handlers/HealthApiImpl.kt
index d988fab50a..a319e12ab0 100644
--- a/model-server/src/main/kotlin/org/modelix/model/server/handlers/HealthApiImpl.kt
+++ b/model-server/src/main/kotlin/org/modelix/model/server/handlers/HealthApiImpl.kt
@@ -2,10 +2,8 @@ package org.modelix.model.server.handlers
 
 import io.ktor.http.ContentType
 import io.ktor.http.HttpStatusCode
-import io.ktor.server.application.ApplicationCall
-import io.ktor.server.application.call
 import io.ktor.server.response.respondText
-import io.ktor.util.pipeline.PipelineContext
+import io.ktor.server.routing.RoutingContext
 import org.modelix.model.server.handlers.KeyValueLikeModelServer.Companion.PROTECTED_PREFIX
 import org.modelix.model.server.store.RequiresTransaction
 import org.modelix.model.server.store.StoreManager
@@ -16,7 +14,7 @@ class HealthApiImpl(
 
     private val stores: StoreManager get() = repositoriesManager.stores
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.getHealth() {
+    override suspend fun RoutingContext.getHealth() {
         if (isHealthy()) {
             call.respondText(text = "healthy", contentType = ContentType.Text.Plain, status = HttpStatusCode.OK)
         } else {
diff --git a/model-server/src/main/kotlin/org/modelix/model/server/handlers/IdsApiImpl.kt b/model-server/src/main/kotlin/org/modelix/model/server/handlers/IdsApiImpl.kt
index 27c1eee672..1bafa773ff 100644
--- a/model-server/src/main/kotlin/org/modelix/model/server/handlers/IdsApiImpl.kt
+++ b/model-server/src/main/kotlin/org/modelix/model/server/handlers/IdsApiImpl.kt
@@ -1,12 +1,10 @@
 package org.modelix.model.server.handlers
 
 import io.ktor.server.application.Application
-import io.ktor.server.application.ApplicationCall
-import io.ktor.server.application.call
 import io.ktor.server.plugins.origin
 import io.ktor.server.response.respondText
+import io.ktor.server.routing.RoutingContext
 import io.ktor.server.routing.routing
-import io.ktor.util.pipeline.PipelineContext
 import org.modelix.authorization.getUserName
 import org.modelix.authorization.requiresLogin
 import org.modelix.model.server.store.RequiresTransaction
@@ -19,7 +17,7 @@ class IdsApiImpl(
     private val repositoriesManager: IRepositoriesManager,
 ) : IdsApi() {
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.getServerId() {
+    override suspend fun RoutingContext.getServerId() {
         // Currently, the server ID is initialized in KeyValueLikeModelServer eagerly on startup.
         // Should KeyValueLikeModelServer be removed or change,
         // RepositoriesManager#maybeInitAndGetSeverId will initialize the server ID lazily on the first request.
@@ -34,11 +32,11 @@ class IdsApiImpl(
         call.respondText(serverId)
     }
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.getUserId() {
+    override suspend fun RoutingContext.getUserId() {
         call.respondText(call.getUserName() ?: call.request.origin.remoteHost)
     }
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.generateClientId() {
+    override suspend fun RoutingContext.generateClientId() {
         call.respondText(repositoriesManager.getStoreManager().getGlobalStoreClient().generateId("clientId").toString())
     }
 
diff --git a/model-server/src/main/kotlin/org/modelix/model/server/handlers/KeyValueLikeModelServer.kt b/model-server/src/main/kotlin/org/modelix/model/server/handlers/KeyValueLikeModelServer.kt
index 3cecbdd4b4..56850b360f 100644
--- a/model-server/src/main/kotlin/org/modelix/model/server/handlers/KeyValueLikeModelServer.kt
+++ b/model-server/src/main/kotlin/org/modelix/model/server/handlers/KeyValueLikeModelServer.kt
@@ -11,6 +11,7 @@ import io.ktor.server.resources.get
 import io.ktor.server.resources.post
 import io.ktor.server.resources.put
 import io.ktor.server.response.respondText
+import io.ktor.server.routing.RoutingContext
 import io.ktor.server.routing.routing
 import io.ktor.util.pipeline.PipelineContext
 import kotlinx.html.br
@@ -211,7 +212,7 @@ class KeyValueLikeModelServer(
     }
 
     @RequiresTransaction
-    fun collect(rootKey: String, callContext: CallContext?): JSONArray {
+    fun collect(rootKey: String, routingContext: RoutingContext?): JSONArray {
         val result = JSONArray()
         val processed: MutableSet<String> = HashSet()
         val pending: MutableSet<String> = HashSet()
@@ -219,8 +220,8 @@ class KeyValueLikeModelServer(
         while (pending.isNotEmpty()) {
             val keys: List<String> = ArrayList(pending)
             pending.clear()
-            if (callContext != null) {
-                keys.forEach { callContext.checkKeyPermission(it, EPermissionType.READ) }
+            if (routingContext != null) {
+                keys.forEach { routingContext.checkKeyPermission(it, EPermissionType.READ) }
             }
             val values = stores.getGlobalStoreClient(false).getAll(keys)
             for (i in keys.indices) {
@@ -253,7 +254,7 @@ class KeyValueLikeModelServer(
     }
 
     @RequiresTransaction
-    private fun CallContext.putEntries(newEntries: Map<String, String?>) {
+    private fun RoutingContext.putEntries(newEntries: Map<String, String?>) {
         val referencedKeys: MutableSet<String> = HashSet()
         for ((key, value) in newEntries) {
             checkKeyPermission(key, EPermissionType.WRITE)
@@ -326,7 +327,7 @@ class KeyValueLikeModelServer(
         }
     }
 
-    private suspend fun CallContext.respondValue(key: String, value: String?) {
+    private suspend fun RoutingContext.respondValue(key: String, value: String?) {
         if (value == null) {
             throw HttpException(HttpStatusCode.NotFound, details = "key '$key' not found")
         } else {
@@ -335,7 +336,7 @@ class KeyValueLikeModelServer(
     }
 
     @Throws(IOException::class)
-    private fun CallContext.checkKeyPermission(key: String, type: EPermissionType) {
+    private fun RoutingContext.checkKeyPermission(key: String, type: EPermissionType) {
         val isWrite = type == EPermissionType.WRITE
         switchKeyType(
             key = key,
diff --git a/model-server/src/main/kotlin/org/modelix/model/server/handlers/MetricsApiImpl.kt b/model-server/src/main/kotlin/org/modelix/model/server/handlers/MetricsApiImpl.kt
index f7f2b24928..411bce118b 100644
--- a/model-server/src/main/kotlin/org/modelix/model/server/handlers/MetricsApiImpl.kt
+++ b/model-server/src/main/kotlin/org/modelix/model/server/handlers/MetricsApiImpl.kt
@@ -1,13 +1,11 @@
 package org.modelix.model.server.handlers
 
 import io.ktor.server.application.Application
-import io.ktor.server.application.ApplicationCall
-import io.ktor.server.application.call
 import io.ktor.server.application.install
 import io.ktor.server.metrics.micrometer.MicrometerMetrics
 import io.ktor.server.response.respond
+import io.ktor.server.routing.RoutingContext
 import io.ktor.server.routing.routing
-import io.ktor.util.pipeline.PipelineContext
 import io.micrometer.core.instrument.binder.jvm.ClassLoaderMetrics
 import io.micrometer.core.instrument.binder.jvm.JvmGcMetrics
 import io.micrometer.core.instrument.binder.jvm.JvmInfoMetrics
@@ -54,7 +52,7 @@ class MetricsApiImpl : MetricsApi() {
         }
     }
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.getMetrics() {
+    override suspend fun RoutingContext.getMetrics() {
         call.respond(appMicrometerRegistry.scrape())
     }
 }
diff --git a/model-server/src/main/kotlin/org/modelix/model/server/handlers/ModelReplicationServer.kt b/model-server/src/main/kotlin/org/modelix/model/server/handlers/ModelReplicationServer.kt
index 331d245c35..c3006202a8 100644
--- a/model-server/src/main/kotlin/org/modelix/model/server/handlers/ModelReplicationServer.kt
+++ b/model-server/src/main/kotlin/org/modelix/model/server/handlers/ModelReplicationServer.kt
@@ -13,9 +13,9 @@ import io.ktor.server.response.respond
 import io.ktor.server.response.respondBytesWriter
 import io.ktor.server.response.respondText
 import io.ktor.server.response.respondTextWriter
+import io.ktor.server.routing.RoutingContext
 import io.ktor.server.routing.routing
 import io.ktor.util.cio.use
-import io.ktor.util.pipeline.PipelineContext
 import io.ktor.utils.io.ByteWriteChannel
 import io.ktor.utils.io.close
 import io.ktor.utils.io.readUTF8Line
@@ -90,7 +90,7 @@ class ModelReplicationServer(
     private fun repositoryId(paramValue: String?) =
         RepositoryId(checkNotNull(paramValue) { "Parameter 'repository' not available" })
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.getRepositories() {
+    override suspend fun RoutingContext.getRepositories() {
         call.respondText(
             @OptIn(RequiresTransaction::class)
             runRead { repositoriesManager.getRepositories() }
@@ -99,7 +99,7 @@ class ModelReplicationServer(
         )
     }
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.getRepositoryBranches(repository: String) {
+    override suspend fun RoutingContext.getRepositoryBranches(repository: String) {
         call.respondText(
             @OptIn(RequiresTransaction::class)
             runRead { repositoriesManager.getBranchNames(repositoryId(repository)) }
@@ -108,7 +108,7 @@ class ModelReplicationServer(
         )
     }
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.getRepositoryBranchDelta(
+    override suspend fun RoutingContext.getRepositoryBranchDelta(
         repository: String,
         branch: String,
         lastKnown: String?,
@@ -123,7 +123,7 @@ class ModelReplicationServer(
         call.respondDelta(RepositoryId(repository), versionHash, lastKnown)
     }
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.getRepositoryBranchV1(
+    override suspend fun RoutingContext.getRepositoryBranchV1(
         repository: String,
         branch: String,
         lastKnown: String?,
@@ -138,7 +138,7 @@ class ModelReplicationServer(
         call.respond(BranchV1(branch, versionHash))
     }
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.deleteRepositoryBranch(
+    override suspend fun RoutingContext.deleteRepositoryBranch(
         repository: String,
         branch: String,
     ) {
@@ -162,7 +162,7 @@ class ModelReplicationServer(
         call.respond(HttpStatusCode.NoContent)
     }
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.getRepositoryBranchHash(
+    override suspend fun RoutingContext.getRepositoryBranchHash(
         repository: String,
         branch: String,
     ) {
@@ -176,7 +176,7 @@ class ModelReplicationServer(
         call.respondText(versionHash)
     }
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.initializeRepository(
+    override suspend fun RoutingContext.initializeRepository(
         repository: String,
         useRoleIds: Boolean?,
         legacyGlobalStorage: Boolean?,
@@ -194,7 +194,7 @@ class ModelReplicationServer(
         call.respondDelta(RepositoryId(repository), initialVersion.getContentHash(), null)
     }
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.deleteRepository(repository: String) {
+    override suspend fun RoutingContext.deleteRepository(repository: String) {
         checkPermission(ModelServerPermissionSchema.repository(repository).delete)
 
         @OptIn(RequiresTransaction::class)
@@ -208,7 +208,7 @@ class ModelReplicationServer(
         }
     }
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.postRepositoryBranch(
+    override suspend fun RoutingContext.postRepositoryBranch(
         repository: String,
         branch: String,
     ) {
@@ -228,7 +228,7 @@ class ModelReplicationServer(
         call.respondDelta(RepositoryId(repository), mergedHash, deltaFromClient.versionHash)
     }
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.pollRepositoryBranch(
+    override suspend fun RoutingContext.pollRepositoryBranch(
         repository: String,
         branch: String,
         lastKnown: String?,
@@ -239,7 +239,7 @@ class ModelReplicationServer(
         call.respondDelta(RepositoryId(repository), newVersionHash, lastKnown)
     }
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.postRepositoryObjectsGetAll(repository: String) {
+    override suspend fun RoutingContext.postRepositoryObjectsGetAll(repository: String) {
         checkPermission(ModelServerPermissionSchema.repository(repository).objects.read)
         val channel = call.receiveChannel()
         val keys = hashSetOf<String>()
@@ -263,7 +263,7 @@ class ModelReplicationServer(
         }
     }
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.pollRepositoryBranchHash(
+    override suspend fun RoutingContext.pollRepositoryBranchHash(
         repository: String,
         branch: String,
         lastKnown: String?,
@@ -275,7 +275,7 @@ class ModelReplicationServer(
         call.respondText(newVersionHash)
     }
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.getRepositoryVersionHash(
+    override suspend fun RoutingContext.getRepositoryVersionHash(
         versionHash: String,
         repository: String,
         lastKnown: String?,
@@ -287,7 +287,7 @@ class ModelReplicationServer(
         call.respondDelta(RepositoryId(repository), versionHash, lastKnown)
     }
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.postRepositoryBranchQuery(
+    override suspend fun RoutingContext.postRepositoryBranchQuery(
         repository: String,
         branchName: String,
     ) {
@@ -334,7 +334,7 @@ class ModelReplicationServer(
         }
     }
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.postRepositoryVersionHashQuery(
+    override suspend fun RoutingContext.postRepositoryVersionHashQuery(
         versionHash: String,
         repository: String,
     ) {
@@ -345,7 +345,7 @@ class ModelReplicationServer(
         ModelQLServer.handleCall(call, branch.getRootNode(), branch.getArea())
     }
 
-    override suspend fun PipelineContext<Unit, ApplicationCall>.putRepositoryObjects(repository: String) {
+    override suspend fun RoutingContext.putRepositoryObjects(repository: String) {
         checkPermission(ModelServerPermissionSchema.repository(parameter("repository")).objects.add)
 
         val channel = call.receiveChannel()
@@ -374,7 +374,7 @@ class ModelReplicationServer(
     }
 
     @Deprecated("deprecated flag is set in the OpenAPI specification")
-    override suspend fun PipelineContext<Unit, ApplicationCall>.getVersionHash(
+    override suspend fun RoutingContext.getVersionHash(
         versionHash: String,
         lastKnown: String?,
     ) {
@@ -493,7 +493,7 @@ private fun <K, V> Map<K, V?>.checkValuesNotNull(lazyMessage: (K) -> Any): Map<K
     }
 } as Map<K, V>
 
-private fun PipelineContext<Unit, ApplicationCall>.parameter(name: String): String {
+private fun RoutingContext.parameter(name: String): String {
     return call.parameter(name)
 }
 
diff --git a/model-server/src/main/resources/openapi/templates/api.mustache b/model-server/src/main/resources/openapi/templates/api.mustache
index 4d47a3c227..74055390f4 100644
--- a/model-server/src/main/resources/openapi/templates/api.mustache
+++ b/model-server/src/main/resources/openapi/templates/api.mustache
@@ -16,7 +16,7 @@ import io.ktor.server.resources.head
 import io.ktor.server.resources.patch
 {{/featureResources}}
 import io.ktor.server.routing.*
-import io.ktor.util.pipeline.PipelineContext
+import io.ktor.server.routing.RoutingContext
 {{#imports}}import {{import}}
 {{/imports}}
 
@@ -42,7 +42,7 @@ abstract class {{classname}} {
      {{#isDeprecated}}
      @Deprecated("deprecated flag is set in the OpenAPI specification")
      {{/isDeprecated}}
-    abstract suspend fun PipelineContext<Unit, ApplicationCall>.{{operationId}}{{#lambda.titlecase}}{{key}}{{/lambda.titlecase}}({{#allParams}}{{paramName}}: {{{dataType}}}{{^required}}?{{/required}}{{#required}}{{#isNullable}}?{{/isNullable}}{{/required}}{{^-last}}, {{/-last}}{{/allParams}})
+    abstract suspend fun RoutingContext.{{operationId}}{{#lambda.titlecase}}{{key}}{{/lambda.titlecase}}({{#allParams}}{{paramName}}: {{{dataType}}}{{^required}}?{{/required}}{{#required}}{{#isNullable}}?{{/isNullable}}{{/required}}{{^-last}}, {{/-last}}{{/allParams}})
 
                 {{/entrySet}}
             {{/x-modelix-media-type-handlers}}
@@ -62,7 +62,7 @@ abstract class {{classname}} {
     {{#isDeprecated}}
     @Deprecated("deprecated flag is set in the OpenAPI specification")
     {{/isDeprecated}}
-    abstract suspend fun PipelineContext<Unit, ApplicationCall>.{{operationId}}({{#allParams}}{{paramName}}: {{{dataType}}}{{^required}}?{{/required}}{{#required}}{{#isNullable}}?{{/isNullable}}{{/required}}{{^-last}}, {{/-last}}{{/allParams}})
+    abstract suspend fun RoutingContext.{{operationId}}({{#allParams}}{{paramName}}: {{{dataType}}}{{^required}}?{{/required}}{{#required}}{{#isNullable}}?{{/isNullable}}{{/required}}{{^-last}}, {{/-last}}{{/allParams}})
 
             {{/x-modelix-media-type-handlers}}
         {{/vendorExtensions}}
diff --git a/model-server/src/test/kotlin/org/modelix/model/server/ModelServerTestUtil.kt b/model-server/src/test/kotlin/org/modelix/model/server/ModelServerTestUtil.kt
index ac09c332a5..3bc312f10f 100644
--- a/model-server/src/test/kotlin/org/modelix/model/server/ModelServerTestUtil.kt
+++ b/model-server/src/test/kotlin/org/modelix/model/server/ModelServerTestUtil.kt
@@ -4,6 +4,9 @@ import io.ktor.serialization.kotlinx.json.json
 import io.ktor.server.application.Application
 import io.ktor.server.application.install
 import io.ktor.server.application.pluginOrNull
+import io.ktor.server.engine.EmbeddedServer
+import io.ktor.server.engine.connector
+import io.ktor.server.engine.embeddedServer
 import io.ktor.server.netty.Netty
 import io.ktor.server.netty.NettyApplicationEngine
 import io.ktor.server.plugins.contentnegotiation.ContentNegotiation
@@ -51,9 +54,12 @@ fun Application.installDefaultServerPlugins(unitTestMode: Boolean = true) {
  */
 fun runWithNettyServer(
     setupBlock: (application: Application) -> Unit,
-    testBlock: suspend (server: NettyApplicationEngine) -> Unit,
+    testBlock: suspend (server: EmbeddedServer<NettyApplicationEngine, NettyApplicationEngine.Configuration>) -> Unit,
 ) {
-    val nettyServer: NettyApplicationEngine = io.ktor.server.engine.embeddedServer(Netty, port = 0) {
+    val nettyServer = embeddedServer(Netty, configure = {
+        connector { this.port = 0 }
+        responseWriteTimeoutSeconds = 30
+    }) {
         installDefaultServerPlugins()
         setupBlock(this)
     }
diff --git a/model-server/src/test/kotlin/org/modelix/model/server/handlers/ModelReplicationServerTest.kt b/model-server/src/test/kotlin/org/modelix/model/server/handlers/ModelReplicationServerTest.kt
index b1b0d63bc9..c204329411 100644
--- a/model-server/src/test/kotlin/org/modelix/model/server/handlers/ModelReplicationServerTest.kt
+++ b/model-server/src/test/kotlin/org/modelix/model/server/handlers/ModelReplicationServerTest.kt
@@ -28,6 +28,7 @@ import io.ktor.serialization.kotlinx.KotlinxSerializationConverter
 import io.ktor.serialization.kotlinx.json.DefaultJson
 import io.ktor.serialization.kotlinx.json.json
 import io.ktor.server.application.Application
+import io.ktor.server.engine.EmbeddedServer
 import io.ktor.server.netty.NettyApplicationEngine
 import io.ktor.server.testing.ApplicationTestBuilder
 import io.ktor.server.testing.testApplication
@@ -287,8 +288,8 @@ class ModelReplicationServerTest {
             repositoriesManager.createRepository(repositoryId, null)
         }
 
-        suspend fun createClient(server: NettyApplicationEngine): HttpClient {
-            val port = server.resolvedConnectors().first().port
+        suspend fun createClient(server: EmbeddedServer<NettyApplicationEngine, NettyApplicationEngine.Configuration>): HttpClient {
+            val port = server.engine.resolvedConnectors().first().port
             return HttpClient(CIO) {
                 defaultRequest {
                     url("http://localhost:$port")
@@ -301,7 +302,7 @@ class ModelReplicationServerTest {
 
         val modelReplicationServer = ModelReplicationServer(faultyRepositoriesManager)
         val setupBlock = { application: Application -> modelReplicationServer.init(application) }
-        val testBlock: suspend (server: NettyApplicationEngine) -> Unit = { server ->
+        val testBlock: suspend (server: EmbeddedServer<NettyApplicationEngine, NettyApplicationEngine.Configuration>) -> Unit = { server ->
             withTimeout(10.seconds) {
                 val client = createClient(server)
                 // Act