diff --git a/cinema-api/build.gradle.kts b/cinema-api/build.gradle.kts
index 80b9f12..0f1051e 100644
--- a/cinema-api/build.gradle.kts
+++ b/cinema-api/build.gradle.kts
@@ -2,7 +2,8 @@ description = "Cinema API"
 
 plugins {
     kotlin("jvm")
-    id("io.github.ermadmi78.kobby") version "4.0.0"
+    kotlin("plugin.serialization")
+    id("io.github.ermadmi78.kobby") version "5.3.1"
 }
 
 kotlin {
@@ -10,9 +11,9 @@ kotlin {
 }
 
 dependencies {
-    // Add this dependency to enable Jackson annotation generation in DTO classes
-    compileOnly("com.fasterxml.jackson.core:jackson-annotations:2.15.4")
+    // Add this dependency to enable Kotlinx Serialization
+    compileOnly("org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.3")
 
     // Add this dependency to enable default Ktor adapters generation
-    compileOnly("io.ktor:ktor-client-cio:2.3.9")
+    compileOnly("io.ktor:ktor-client-cio:2.3.13")
 }
\ No newline at end of file
diff --git a/cinema-client/build.gradle.kts b/cinema-client/build.gradle.kts
index c1357bd..4a3843d 100644
--- a/cinema-client/build.gradle.kts
+++ b/cinema-client/build.gradle.kts
@@ -3,7 +3,7 @@ description = "Cinema Client"
 plugins {
     kotlin("jvm")
     id("org.jetbrains.kotlin.plugin.spring")
-    id("org.springframework.boot") version "3.2.4"
+    id("org.springframework.boot") version "3.5.9"
 }
 
 kotlin {
@@ -16,13 +16,12 @@ dependencies {
     implementation(platform(org.springframework.boot.gradle.plugin.SpringBootPlugin.BOM_COORDINATES))
     implementation("org.springframework.boot:spring-boot-starter")
 
-    implementation("com.fasterxml.jackson.module:jackson-module-kotlin:2.15.4")
-    implementation("com.fasterxml.jackson.module:jackson-module-parameter-names:2.15.4")
+    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.3")
 
-    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.8.0")
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.8.1")
 
-    implementation("io.ktor:ktor-client-cio:2.3.9")
-    implementation("io.ktor:ktor-client-websockets:2.3.9")
+    implementation("io.ktor:ktor-client-cio:2.3.13")
+    implementation("io.ktor:ktor-client-websockets:2.3.13")
 
     implementation(kotlin("stdlib"))
     implementation(kotlin("reflect"))
diff --git a/cinema-client/src/main/kotlin/io/github/ermadmi78/kobby/cinema/client/application.kt b/cinema-client/src/main/kotlin/io/github/ermadmi78/kobby/cinema/client/application.kt
index ffa525b..ce43d75 100644
--- a/cinema-client/src/main/kotlin/io/github/ermadmi78/kobby/cinema/client/application.kt
+++ b/cinema-client/src/main/kotlin/io/github/ermadmi78/kobby/cinema/client/application.kt
@@ -1,8 +1,5 @@
 package io.github.ermadmi78.kobby.cinema.client
 
-import com.fasterxml.jackson.annotation.JsonCreator
-import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
-import com.fasterxml.jackson.module.paramnames.ParameterNamesModule
 import io.github.ermadmi78.kobby.cinema.api.kobby.kotlin.*
 import io.github.ermadmi78.kobby.cinema.api.kobby.kotlin.adapter.ktor.CinemaCompositeKtorAdapter
 import io.ktor.client.*
@@ -15,7 +12,6 @@ import kotlinx.coroutines.runBlocking
 import org.springframework.boot.CommandLineRunner
 import org.springframework.boot.autoconfigure.SpringBootApplication
 import org.springframework.boot.runApplication
-import kotlin.reflect.KClass
 
 /**
  * Created on 16.10.2021
@@ -216,31 +212,19 @@ class Application : CommandLineRunner {
     private fun createKtorAdapter(): CinemaAdapter {
         // Create Ktor http client
         val client = HttpClient(CIO) {
+            expectSuccess = true
             install(WebSockets)
         }
 
-        // Create Jackson object mapper
-        val mapper = jacksonObjectMapper()
-            .registerModule(ParameterNamesModule(JsonCreator.Mode.PROPERTIES))
-
-        // Create default implementation of CinemaAdapter
-        // Note, you can write your own implementation
+        // Default implementation of CinemaAdapter.
+        // Note, you can write your own implementation.
         return CinemaCompositeKtorAdapter(
             client,
             "http://localhost:8080/graphql",
-            "ws://localhost:8080/graphql",
-            object : CinemaMapper {
-                override fun serialize(value: Any): String =
-                    mapper.writeValueAsString(value)
-
-                override fun <T : Any> deserialize(content: String, contentType: KClass<T>): T =
-                    mapper.readValue(content, contentType.java)
-            }
+            "ws://localhost:8080/graphql"
         ) {
             println(">> ${it.query}")
-            if (!it.variables.isNullOrEmpty()) {
-                println(">> ${it.variables}")
-            }
+            println(">> ${it.variables}")
         }
     }
 }
\ No newline at end of file
diff --git a/cinema-server/build.gradle.kts b/cinema-server/build.gradle.kts
index 21f383e..0ddc35c 100644
--- a/cinema-server/build.gradle.kts
+++ b/cinema-server/build.gradle.kts
@@ -5,7 +5,7 @@ description = "Cinema Server"
 plugins {
     kotlin("jvm")
     id("org.jetbrains.kotlin.plugin.spring")
-    id("org.springframework.boot") version "3.2.4"
+    id("org.springframework.boot") version "3.5.9"
 }
 
 kotlin {
@@ -20,11 +20,11 @@ dependencies {
     implementation("org.springframework.boot:spring-boot-starter-webflux")
     implementation("org.springframework.data:spring-data-commons")
 
-    implementation("com.fasterxml.jackson.module:jackson-module-kotlin:2.15.4")
+    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.3")
 
     implementation(kotlin("stdlib"))
     implementation(kotlin("reflect"))
 
-    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.8.0")
-    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-reactor:1.8.0")
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.8.1")
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-reactor:1.8.1")
 }
\ No newline at end of file
diff --git a/cinema-server/src/main/resources/graphiql/index.html b/cinema-server/src/main/resources/graphiql/index.html
new file mode 100644
index 0000000..a3a4671
--- /dev/null
+++ b/cinema-server/src/main/resources/graphiql/index.html
@@ -0,0 +1,79 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>GraphiQL</title>
+    <style>
+        body {
+            margin: 0;
+        }
+        #graphiql {
+            height: 100dvh;
+        }
+        .loading {
+            height: 100%;
+            display: flex;
+            align-items: center;
+            justify-content: center;
+            font-size: 4rem;
+        }
+    </style>
+    <link rel="stylesheet" href="https://esm.sh/graphiql@5.2.1/dist/style.css"/>
+    <link rel="stylesheet" href="https://esm.sh/@graphiql/plugin-explorer@5.1.1/dist/style.css"/>
+    <script type="importmap">
+        {
+          "imports": {
+            "react": "https://esm.sh/react@19.1.0",
+            "react/": "https://esm.sh/react@19.1.0/",
+            "react-dom": "https://esm.sh/react-dom@19.1.0",
+            "react-dom/": "https://esm.sh/react-dom@19.1.0/",
+            "graphiql": "https://esm.sh/graphiql@5.2.1?standalone&external=react,react-dom,@graphiql/react,graphql",
+            "graphiql/": "https://esm.sh/graphiql@5.2.1/",
+            "@graphiql/plugin-explorer": "https://esm.sh/@graphiql/plugin-explorer@5.1.1?standalone&external=react,@graphiql/react,graphql",
+            "@graphiql/react": "https://esm.sh/@graphiql/react@0.37.2?standalone&external=react,react-dom,graphql,@graphiql/toolkit,@emotion/is-prop-valid",
+            "@graphiql/toolkit": "https://esm.sh/@graphiql/toolkit@0.11.3?standalone&external=graphql",
+            "graphql": "https://esm.sh/graphql@16.11.0",
+            "@emotion/is-prop-valid": "data:text/javascript,"
+          }
+        }
+    </script>
+    <script type="module">
+        import React from 'react';
+        import ReactDOM from 'react-dom/client';
+        import { GraphiQL, HISTORY_PLUGIN } from 'graphiql';
+        import { createGraphiQLFetcher } from '@graphiql/toolkit';
+        import { explorerPlugin } from '@graphiql/plugin-explorer';
+        import 'graphiql/setup-workers/esm.sh';
+
+        const params = new URLSearchParams(window.location.search);
+        const path = params.get('path') || '/graphql';
+        const url = `${location.protocol}//${location.host}${path}`;
+        const wsPath = params.get('wsPath') || '/graphql';
+        const wsProtocol = location.protocol === 'https:' ? 'wss:' : 'ws:';
+        const subscriptionUrl = `${wsProtocol}//${location.host}${wsPath}`;
+        const gqlFetcher = createGraphiQLFetcher({'url': url, 'subscriptionUrl': subscriptionUrl});
+        const plugins = [HISTORY_PLUGIN, explorerPlugin()];
+        const xsrfToken = document.cookie.match(new RegExp('(?:^| )XSRF-TOKEN=([^;]+)'));
+        const initialHeaders = xsrfToken ? `{ 'X-XSRF-TOKEN' : '${ xsrfToken[1] }' }` : undefined;
+
+        function App() {
+            return React.createElement(GraphiQL, {
+                fetcher: gqlFetcher,
+                defaultEditorToolsVisibility: true,
+                headerEditorEnabled: true,
+                shouldPersistHeaders: true,
+                initialHeaders: initialHeaders,
+                plugins: plugins,
+            });
+        }
+
+        const container = document.getElementById('graphiql');
+        const root = ReactDOM.createRoot(container);
+        root.render(React.createElement(App));
+    </script>
+</head>
+<body>
+    <div id="graphiql"><div class="loading">Loading...</div></div>
+</body>
+</html>
diff --git a/gradle.properties b/gradle.properties
index daa9cfe..5b7f049 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,7 +1,7 @@
 # suppress inspection "UnusedProperty" for whole file
 kotlin.code.style=official
-kotlin.version=1.9.23
-kotlinVersion=1.9.23
+kotlin.version=1.9.25
+kotlinVersion=1.9.25
 
 group=io.github.ermadmi78
 version=0.0.0-SNAPSHOT
diff --git a/settings.gradle.kts b/settings.gradle.kts
index f34c7e7..f252c34 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -4,6 +4,7 @@ pluginManagement {
     val kotlinVersion: String by settings
     plugins {
         kotlin("jvm") version kotlinVersion
+        kotlin("plugin.serialization") version kotlinVersion
         id("org.jetbrains.kotlin.plugin.spring") version kotlinVersion
     }
 }