diff --git a/package.json b/package.json
index 94c21a6..821f54f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "voicevox-client",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "description": "Voicevox wrapper for ts/js",
   "main": "dist/index.js",
   "exports": {
@@ -18,9 +18,9 @@
   "devDependencies": {
     "prettier": "^2.8.6",
     "ts-node": "^10.9.1",
-    "typedoc": "^0.23.28",
+    "typedoc": "^0.24.8",
     "typescript": "^5.0.2",
-    "@types/node": "^18.15.10",
+    "@types/node": "^20.2.5",
     "voicevox-client": "file:./"
   },
   "scripts": {
diff --git a/src/audio_query.ts b/src/audio_query.ts
index 55fd16c..b29b4d6 100644
--- a/src/audio_query.ts
+++ b/src/audio_query.ts
@@ -43,11 +43,12 @@ export class audioQuery {
    */
   async synthesis(
     speaker: number,
-    options: {
+    options?: {
       interrogative_upspeak?: boolean;
       core_version?: string;
     }
   ): Promise<ArrayBuffer> {
+    options ??= {};
     let params: synthesisParams = {
       speaker: speaker,
     };
diff --git a/src/client.ts b/src/client.ts
index 862b2cd..847ffe8 100644
--- a/src/client.ts
+++ b/src/client.ts
@@ -36,10 +36,11 @@ export class Client {
   async createAudioQuery(
     text: string,
     speaker: number,
-    options: {
+    options?: {
       core_version?: string;
     }
   ): Promise<audioQuery> {
+    options ??= {};
     let audioquery = await this.rest.createAudioQuery(text, speaker, options);
     return new audioQuery(this.rest, audioquery);
   }
diff --git a/tests/basic.ts b/tests/basic.ts
index 3d3e1d4..bed3c0a 100644
--- a/tests/basic.ts
+++ b/tests/basic.ts
@@ -1,12 +1,11 @@
-import Client from "voicevox-client";
+import Client from "../dist";
 import { promises as fs } from "fs";
 
 const client = new Client("http://127.0.0.1:50021");
 
 async function main() {
-    const audioQuery = await client.createAudioQuery("こんにちは", 0, {});
-    const data = await audioQuery.synthesis(0);
-    await fs.writeFile('sample.wav', data);
+    const audioQuery = await client.createAudioQuery("こんにちは", 0);
+    await audioQuery.synthesis(0);
 }
 
 main();
diff --git a/yarn.lock b/yarn.lock
index 5b27c21..6c74f34 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -47,10 +47,10 @@
   resolved "https://registry.yarnpkg.com/@tsconfig/node16/-/node16-1.0.3.tgz#472eaab5f15c1ffdd7f8628bd4c4f753995ec79e"
   integrity sha512-yOlFc+7UtL/89t2ZhjPvvB/DeAr3r+Dq58IgzsFkOAvVC6NMJXmCGjbptdXdR9qsX7pKcTL+s87FtYREi2dEEQ==
 
-"@types/node@^18.15.10":
-  version "18.15.11"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-18.15.11.tgz#b3b790f09cb1696cffcec605de025b088fa4225f"
-  integrity sha512-E5Kwq2n4SbMzQOn6wnmBjuK9ouqlURrcZDVfbo9ftDDTFt3nk7ZKK4GMOzoYgnpQJKcxwQw+lGaBvvlMo0qN/Q==
+"@types/node@^20.2.5":
+  version "20.2.5"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-20.2.5.tgz#26d295f3570323b2837d322180dfbf1ba156fefb"
+  integrity sha512-JJulVEQXmiY9Px5axXHeYGLSjhkZEnD+MDPDGbCbIAbMslkKwmygtZFy1X6s/075Yo94sf8GuSlFfPzysQrWZQ==
 
 acorn-walk@^8.1.1:
   version "8.2.0"
@@ -109,15 +109,15 @@ make-error@^1.1.1:
   resolved "https://registry.yarnpkg.com/make-error/-/make-error-1.3.6.tgz#2eb2e37ea9b67c4891f684a1394799af484cf7a2"
   integrity sha512-s8UhlNe7vPKomQhC1qFelMokr/Sc3AgNbso3n74mVPA5LTZwkB9NlXf4XPamLxJE8h0gh73rM94xvwRT2CVInw==
 
-marked@^4.2.12:
+marked@^4.3.0:
   version "4.3.0"
   resolved "https://registry.yarnpkg.com/marked/-/marked-4.3.0.tgz#796362821b019f734054582038b116481b456cf3"
   integrity sha512-PRsaiG84bK+AMvxziE/lCFss8juXjNaWzVbN5tXAm4XjeaS9NAHhop+PjQxz2A9h8Q4M/xGmzP8vqNwy6JeK0A==
 
-minimatch@^7.1.3:
-  version "7.4.3"
-  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-7.4.3.tgz#012cbf110a65134bb354ae9773b55256cdb045a2"
-  integrity sha512-5UB4yYusDtkRPbRiy1cqZ1IpGNcJCGlEMG17RKzPddpyiPKoCdwohbED8g4QXT0ewCt8LTkQXuljsUfQ3FKM4A==
+minimatch@^9.0.0:
+  version "9.0.1"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-9.0.1.tgz#8a555f541cf976c622daf078bb28f29fb927c253"
+  integrity sha512-0jWhJpD/MdhPXwPuiRkCbfYfSKp2qnn2eOc279qI7f+osl/l+prKSrvhg157zSYvx/1nmgn2NqdT6k2Z7zSH9w==
   dependencies:
     brace-expansion "^2.0.1"
 
@@ -155,14 +155,14 @@ ts-node@^10.9.1:
     v8-compile-cache-lib "^3.0.1"
     yn "3.1.1"
 
-typedoc@^0.23.28:
-  version "0.23.28"
-  resolved "https://registry.yarnpkg.com/typedoc/-/typedoc-0.23.28.tgz#3ce9c36ef1c273fa849d2dea18651855100d3ccd"
-  integrity sha512-9x1+hZWTHEQcGoP7qFmlo4unUoVJLB0H/8vfO/7wqTnZxg4kPuji9y3uRzEu0ZKez63OJAUmiGhUrtukC6Uj3w==
+typedoc@^0.24.8:
+  version "0.24.8"
+  resolved "https://registry.yarnpkg.com/typedoc/-/typedoc-0.24.8.tgz#cce9f47ba6a8d52389f5e583716a2b3b4335b63e"
+  integrity sha512-ahJ6Cpcvxwaxfu4KtjA8qZNqS43wYt6JL27wYiIgl1vd38WW/KWX11YuAeZhuz9v+ttrutSsgK+XO1CjL1kA3w==
   dependencies:
     lunr "^2.3.9"
-    marked "^4.2.12"
-    minimatch "^7.1.3"
+    marked "^4.3.0"
+    minimatch "^9.0.0"
     shiki "^0.14.1"
 
 typescript@^5.0.2:
@@ -176,7 +176,7 @@ v8-compile-cache-lib@^3.0.1:
   integrity sha512-wa7YjyUGfNZngI/vtK0UHAN+lgDCxBPCylVXGp0zu59Fz5aiGtNXaq3DhIov063MorB+VfufLh3JlF2KdTK3xg==
 
 "voicevox-client@file:.":
-  version "0.1.0"
+  version "0.1.1"
 
 vscode-oniguruma@^1.7.0:
   version "1.7.0"