diff --git a/package-lock.json b/package-lock.json
index e02cd9f..fdd3215 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,7 @@
       "version": "1.0.0",
       "license": "Apache-2.0",
       "dependencies": {
-        "apollo-server-express": "^3.13.0",
+        "@apollo/server": "^4.9.5",
         "graphql": "^16.8.1",
         "graphql-scalars": "^1.22.4",
         "reflect-metadata": "^0.1.13",
@@ -17,7 +17,6 @@
       },
       "devDependencies": {
         "@eslint-community/eslint-plugin-eslint-comments": "^4.1.0",
-        "@types/express": "^4.17.21",
         "@types/jest": "^29.5.10",
         "@types/node": "^20.10.1",
         "@typescript-eslint/eslint-plugin": "^6.13.1",
@@ -70,6 +69,14 @@
         "node": ">=6.0.0"
       }
     },
+    "node_modules/@apollo/cache-control-types": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@apollo/cache-control-types/-/cache-control-types-1.0.3.tgz",
+      "integrity": "sha512-F17/vCp7QVwom9eG7ToauIKdAxpSoadsJnqIfyryLFSkLSOEqu+eC5Z3N8OXcUVStuOMcNHlyraRsA6rRICu4g==",
+      "peerDependencies": {
+        "graphql": "14.x || 15.x || 16.x"
+      }
+    },
     "node_modules/@apollo/protobufjs": {
       "version": "1.2.7",
       "resolved": "https://registry.npmjs.org/@apollo/protobufjs/-/protobufjs-1.2.7.tgz",
@@ -94,6 +101,226 @@
         "apollo-pbts": "bin/pbts"
       }
     },
+    "node_modules/@apollo/server": {
+      "version": "4.9.5",
+      "resolved": "https://registry.npmjs.org/@apollo/server/-/server-4.9.5.tgz",
+      "integrity": "sha512-eDBfArYbZaTm1AGa82M1aL7lOscVhnZsH85+OWmHMIR98qntzEjNpWpQPYDTru63Qxs4kHcY29NUx/kMGZfGEA==",
+      "dependencies": {
+        "@apollo/cache-control-types": "^1.0.3",
+        "@apollo/server-gateway-interface": "^1.1.1",
+        "@apollo/usage-reporting-protobuf": "^4.1.1",
+        "@apollo/utils.createhash": "^2.0.0",
+        "@apollo/utils.fetcher": "^2.0.0",
+        "@apollo/utils.isnodelike": "^2.0.0",
+        "@apollo/utils.keyvaluecache": "^2.1.0",
+        "@apollo/utils.logger": "^2.0.0",
+        "@apollo/utils.usagereporting": "^2.1.0",
+        "@apollo/utils.withrequired": "^2.0.0",
+        "@graphql-tools/schema": "^9.0.0",
+        "@josephg/resolvable": "^1.0.0",
+        "@types/express": "^4.17.13",
+        "@types/express-serve-static-core": "^4.17.30",
+        "@types/node-fetch": "^2.6.1",
+        "async-retry": "^1.2.1",
+        "body-parser": "^1.20.0",
+        "cors": "^2.8.5",
+        "express": "^4.17.1",
+        "loglevel": "^1.6.8",
+        "lru-cache": "^7.10.1",
+        "negotiator": "^0.6.3",
+        "node-abort-controller": "^3.1.1",
+        "node-fetch": "^2.6.7",
+        "uuid": "^9.0.0",
+        "whatwg-mimetype": "^3.0.0"
+      },
+      "engines": {
+        "node": ">=14.16.0"
+      },
+      "peerDependencies": {
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+      }
+    },
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+      }
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+      "resolved": "https://registry.npmjs.org/@graphql-tools/merge/-/merge-8.4.2.tgz",
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+        "tslib": "^2.4.0"
+      },
+      "peerDependencies": {
+        "graphql": "^14.0.0 || ^15.0.0 || ^16.0.0 || ^17.0.0"
+      }
+    },
+    "node_modules/@apollo/server/node_modules/@graphql-tools/schema": {
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+      "resolved": "https://registry.npmjs.org/@graphql-tools/schema/-/schema-9.0.19.tgz",
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+        "@graphql-tools/merge": "^8.4.1",
+        "@graphql-tools/utils": "^9.2.1",
+        "tslib": "^2.4.0",
+        "value-or-promise": "^1.0.12"
+      },
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+        "graphql": "^14.0.0 || ^15.0.0 || ^16.0.0 || ^17.0.0"
+      }
+    },
+    "node_modules/@apollo/server/node_modules/lru-cache": {
+      "version": "7.18.3",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-7.18.3.tgz",
+      "integrity": "sha512-jumlc0BIUrS3qJGgIkWZsyfAM7NCWiBcCDhnd+3NNM5KbBmLTgHVfWBcg6W+rLUsIpzpERPsvwUP7CckAQSOoA==",
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/@apollo/server/node_modules/value-or-promise": {
+      "version": "1.0.12",
+      "resolved": "https://registry.npmjs.org/value-or-promise/-/value-or-promise-1.0.12.tgz",
+      "integrity": "sha512-Z6Uz+TYwEqE7ZN50gwn+1LCVo9ZVrpxRPOhOLnncYkY1ZzOYtrX8Fwf/rFktZ8R5mJms6EZf5TqNOMeZmnPq9Q==",
+      "engines": {
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     "node_modules/@apollo/usage-reporting-protobuf": {
       "version": "4.1.1",
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@@ -102,123 +329,40 @@
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-      "resolved": "https://registry.npmjs.org/@apollo/utils.keyvaluecache/-/utils.keyvaluecache-1.0.2.tgz",
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+    "node_modules/@apollo/utils.createhash": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/@apollo/utils.createhash/-/utils.createhash-2.0.1.tgz",
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         "escape-html": "~1.0.3",
@@ -15990,7 +15815,6 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
       "integrity": "sha512-pMZTvIkT1d+TFGvDOqodOclx0QWkkgi6Tdoa8gC8ffGAAqz9pzPTZWAybbsHHoED/ztMtkv/VoYTYyShUn81hA==",
-      "peer": true,
       "engines": {
         "node": ">= 0.4.0"
       }
@@ -16063,14 +15887,6 @@
         "node": ">=10.12.0"
       }
     },
-    "node_modules/value-or-promise": {
-      "version": "1.0.11",
-      "resolved": "https://registry.npmjs.org/value-or-promise/-/value-or-promise-1.0.11.tgz",
-      "integrity": "sha512-41BrgH+dIbCFXClcSapVs5M6GkENd3gQOJpEfPDNa71LsUGMXDL0jMWpI/Rh7WhX+Aalfz2TTS3Zt5pUsbnhLg==",
-      "engines": {
-        "node": ">=12"
-      }
-    },
     "node_modules/vary": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
@@ -16485,21 +16301,6 @@
         "node": "^12.13.0 || ^14.15.0 || >=16.0.0"
       }
     },
-    "node_modules/xss": {
-      "version": "1.0.14",
-      "resolved": "https://registry.npmjs.org/xss/-/xss-1.0.14.tgz",
-      "integrity": "sha512-og7TEJhXvn1a7kzZGQ7ETjdQVS2UfZyTlsEdDOqvQF7GoxNfY+0YLCzBy1kPdsDDx4QuNAonQPddpsn6Xl/7sw==",
-      "dependencies": {
-        "commander": "^2.20.3",
-        "cssfilter": "0.0.10"
-      },
-      "bin": {
-        "xss": "bin/xss"
-      },
-      "engines": {
-        "node": ">= 0.10.0"
-      }
-    },
     "node_modules/y18n": {
       "version": "5.0.8",
       "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",
diff --git a/package.json b/package.json
index 28f446d..b9f7b43 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "update": "npx npm-check-update"
   },
   "dependencies": {
-    "apollo-server-express": "^3.13.0",
+    "@apollo/server": "^4.9.5",
     "graphql": "^16.8.1",
     "graphql-scalars": "^1.22.4",
     "reflect-metadata": "^0.1.13",
@@ -34,7 +34,6 @@
   },
   "devDependencies": {
     "@eslint-community/eslint-plugin-eslint-comments": "^4.1.0",
-    "@types/express": "^4.17.21",
     "@types/jest": "^29.5.10",
     "@types/node": "^20.10.1",
     "@typescript-eslint/eslint-plugin": "^6.13.1",
@@ -66,7 +65,8 @@
   },
   "imports": {
     "#graphql/*": "./src/graphql/*",
-    "#types/*": "./src/graphql/types/*",
-    "#test/*": "./test/*"
+    "#src/*": "./src/*",
+    "#test/*": "./test/*",
+    "#types/*": "./src/graphql/types/*"
   }
 }
diff --git a/src/graphql/resolvers/HelloResolver.spec.ts b/src/graphql/resolvers/HelloResolver.spec.ts
index 587bf31..99e96c9 100644
--- a/src/graphql/resolvers/HelloResolver.spec.ts
+++ b/src/graphql/resolvers/HelloResolver.spec.ts
@@ -1,20 +1,25 @@
-import { ApolloServerTestClient } from 'apollo-server-testing'
+import { ApolloServer } from '@apollo/server'
 
-import { testEnvironment } from '#test/helpers'
+import { createServer } from '#src/server/server'
 
-let query: ApolloServerTestClient['query']
+let testServer: ApolloServer
 
 beforeAll(async () => {
-  const testEnv = await testEnvironment()
-  query = testEnv.query
+  testServer = await createServer()
 })
 
 describe('HelloResolver', () => {
   it('return "Hello World!"', async () => {
-    await expect(query({ query: '{ hello { hello } }' })).resolves.toMatchObject({
-      data: {
-        hello: {
-          hello: 'Hello world!',
+    const response = await testServer.executeOperation({
+      query: '{ hello { hello } }',
+    })
+    expect(response.body).toMatchObject({
+      kind: 'single',
+      singleResult: {
+        data: {
+          hello: {
+            hello: 'Hello world!',
+          },
         },
       },
     })
diff --git a/src/graphql/schema.ts b/src/graphql/schema.ts
index f801356..402f7e8 100644
--- a/src/graphql/schema.ts
+++ b/src/graphql/schema.ts
@@ -1,5 +1,3 @@
-import path from 'path'
-
 import { GraphQLSchema } from 'graphql'
 import { buildSchema } from 'type-graphql'
 
diff --git a/src/index.ts b/src/index.ts
index eabb9d0..97f9a5a 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -3,9 +3,9 @@ import 'reflect-metadata'
 import { listen } from './server/server'
 
 export async function main() {
-  await listen(4000)
+  const url = await listen(4000)
   // eslint-disable-next-line no-console
-  console.log('🚀 Server is ready at http://localhost:4000/graphql')
+  console.log(`🚀 Server is ready at ${url}`)
 }
 
 main().catch((e) => {
diff --git a/src/server/server.spec.ts b/src/server/server.spec.ts
index afbb886..eda8885 100644
--- a/src/server/server.spec.ts
+++ b/src/server/server.spec.ts
@@ -1,24 +1,20 @@
-// eslint-disable-next-line @typescript-eslint/no-unused-vars
-import { ApolloServer } from 'apollo-server-express'
-import express from 'express'
+import { startStandaloneServer } from '@apollo/server/standalone'
 
 import { listen } from './server'
 
-jest.mock('express', () => {
-  const originalModule = jest.requireActual('express')
+jest.mock('@apollo/server/standalone', () => {
+  const originalModule = jest.requireActual('@apollo/server/standalone')
   return {
     __esModule: true,
     ...originalModule,
-    default: jest.fn(() => {
+    startStandaloneServer: jest.fn(() => {
       return {
-        listen: jest.fn(),
+        url: 'url',
       }
     }),
   }
 })
 
-jest.mock('apollo-server-express')
-
 describe('server', () => {
   describe('listen', () => {
     beforeEach(async () => {
@@ -26,8 +22,8 @@ describe('server', () => {
       await listen(4000)
     })
 
-    it('calls express', () => {
-      expect(express).toBeCalled()
+    it('calls startStandaloneServer', () => {
+      expect(startStandaloneServer).toBeCalled()
     })
   })
 })
diff --git a/src/server/server.ts b/src/server/server.ts
index e5f3bfc..41b8c7b 100644
--- a/src/server/server.ts
+++ b/src/server/server.ts
@@ -1,18 +1,18 @@
-import { ApolloServer } from 'apollo-server-express'
-import express from 'express'
+import { ApolloServer } from '@apollo/server'
+import { startStandaloneServer } from '@apollo/server/standalone'
 
 import { schema } from '#graphql/schema'
 
-export async function listen(port: number) {
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  const app: any = express()
-
-  const server = new ApolloServer({
+export const createServer = async (): Promise<ApolloServer> => {
+  return new ApolloServer({
     schema: await schema(),
   })
-  await server.start()
-
-  server.applyMiddleware({ app, path: '/' })
-
-  return app.listen(port)
+}
+
+export async function listen(port: number) {
+  const { url } = await startStandaloneServer(await createServer(), {
+    listen: { port },
+  })
+
+  return url
 }
diff --git a/test/helpers.ts b/test/helpers.ts
deleted file mode 100644
index 7d0f0e4..0000000
--- a/test/helpers.ts
+++ /dev/null
@@ -1,12 +0,0 @@
-import { ApolloServer } from 'apollo-server-express'
-import { createTestClient } from 'apollo-server-testing'
-
-import { schema } from '#graphql/schema'
-
-export const testEnvironment = async () => {
-  const server = new ApolloServer({
-    schema: await schema(),
-  })
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  return createTestClient(server as any)
-}
diff --git a/tsconfig.json b/tsconfig.json
index 2f9491d..f432dcc 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -9,8 +9,9 @@
     "lib": ["ESNext"],
     "paths": {
       "#graphql/*": ["./src/graphql/*"],
-      "#types/*": ["./src/graphql/types/*"],
-      "#test/*": ["./test/*"]
+      "#src/*": ["./src/*"],
+      "#test/*": ["./test/*"],
+      "#types/*": ["./src/graphql/types/*"]
     },
     "outDir": "./build/src",
     "esModuleInterop": true,