diff --git a/backend/build.gradle.kts b/backend/build.gradle.kts
index 7ece67f..30dbc5f 100644
--- a/backend/build.gradle.kts
+++ b/backend/build.gradle.kts
@@ -5,6 +5,8 @@ val logback_version: String by project
 plugins {
     kotlin("jvm") version "1.8.22"
     id("io.ktor.plugin") version "2.3.2"
+    kotlin("plugin.serialization") version "1.8.21"
+
 }
 
 group = "no.nav.helse.sprik"
@@ -31,6 +33,4 @@ dependencies {
     implementation("io.ktor:ktor-serialization-kotlinx-json:$ktor_version")
     implementation("io.ktor:ktor-server-content-negotiation:$ktor_version")
     implementation("io.ktor:ktor-client-content-negotiation:$ktor_version")
-    implementation("io.ktor:ktor-serialization-jackson:$ktor_version")
-    implementation("com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.13.3")
 }
\ No newline at end of file
diff --git a/backend/src/main/kotlin/no/nav/helse/sprik/Test.kt b/backend/src/main/kotlin/no/nav/helse/sprik/Test.kt
index 6fa1f04..74cddf2 100644
--- a/backend/src/main/kotlin/no/nav/helse/sprik/Test.kt
+++ b/backend/src/main/kotlin/no/nav/helse/sprik/Test.kt
@@ -1,6 +1,9 @@
 package no.nav.helse.sprik
 
-class Test (
+import kotlinx.serialization.*
+
+@Serializable
+data class Test (
     var ord: String,
     var tall: Int
 ) {
diff --git a/backend/src/main/kotlin/no/nav/helse/sprik/plugins/Routing.kt b/backend/src/main/kotlin/no/nav/helse/sprik/plugins/Routing.kt
index 630e07b..eb3ea04 100644
--- a/backend/src/main/kotlin/no/nav/helse/sprik/plugins/Routing.kt
+++ b/backend/src/main/kotlin/no/nav/helse/sprik/plugins/Routing.kt
@@ -1,13 +1,11 @@
 package no.nav.helse.sprik.plugins
 
-import com.fasterxml.jackson.databind.SerializationFeature
-import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule
 import io.ktor.http.*
-import io.ktor.serialization.jackson.*
 import io.ktor.server.routing.*
 import io.ktor.server.response.*
 import io.ktor.server.application.*
 import io.ktor.server.plugins.contentnegotiation.*
+import io.ktor.serialization.kotlinx.json.*
 import io.ktor.server.plugins.cors.routing.*
 import io.ktor.server.request.*
 import no.nav.helse.sprik.Test
@@ -17,14 +15,10 @@ fun Application.configureRouting() {
         anyHost()
         allowMethod(HttpMethod.Get)
         allowMethod(HttpMethod.Post)
-        //allowHeader(HttpHeaders.AccessControlAllowOrigin)
         allowNonSimpleContentTypes = true
     }
     install(ContentNegotiation) {
-        jackson {
-            disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS)
-            registerModule(JavaTimeModule())
-        }
+        json()
     }
     routing {
         get("/") {
@@ -33,7 +27,7 @@ fun Application.configureRouting() {
         post("/test") {
             val test = call.receive<Test>()
             println(test)
-            //call.respondText(test.toString())
+            call.respond(status = HttpStatusCode.Created, message = test)
         }
     }
 }