diff --git a/.eslintrc.js b/.eslintrc.json
similarity index 81%
rename from .eslintrc.js
rename to .eslintrc.json
index 0db5b24..62fd271 100644
--- a/.eslintrc.js
+++ b/.eslintrc.json
@@ -1,4 +1,4 @@
-module.exports = {
+{
     "env": {
         "browser": true,
         "commonjs": true,
@@ -8,6 +8,5 @@ module.exports = {
     "parserOptions": {
         "ecmaVersion": 12
     },
-    "rules": {
-    }
-};
+    "rules": {}
+}
\ No newline at end of file
diff --git a/.github/workflows/buildlint.yml b/.github/workflows/buildlint.yml
index 0b9914f..9803bc3 100644
--- a/.github/workflows/buildlint.yml
+++ b/.github/workflows/buildlint.yml
@@ -21,9 +21,10 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v1
+      uses: actions/setup-node@v2
       with:
         node-version: ${{ matrix.node-version }}
+        cache: 'npm'
     - run: npm i
-    - run: npx eslint --config .eslintrc.js
+    - run: npx eslint --config .eslintrc.json
     - run: npm run build
diff --git a/package.json b/package.json
index d32cc47..f2ad86e 100644
--- a/package.json
+++ b/package.json
@@ -9,6 +9,7 @@
   },
   "author": "",
   "license": "MIT",
+  "type": "module",
   "dependencies": {
     "@discordjs/opus": "^0.3.3",
     "@google-cloud/text-to-speech": "^3.1.3",
diff --git a/src/main.ts b/src/main.ts
index 2396a0b..871f60d 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -4,7 +4,7 @@ import { readFileSync, writeFile, writeFileSync, statSync } from "fs";
 import { promisify } from "util";
 import { createHash } from "crypto";
 import { Client, TextChannel } from "discord.js";
-import { getConf, updateConf } from "./conf";
+import { getConf, updateConf } from "./conf.js";
 
 // いるやつ初期化
 const Gclient = new TextToSpeechClient();
diff --git a/tsconfig.json b/tsconfig.json
index 4660236..8b3160a 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -5,7 +5,7 @@
     /* Basic Options */
     // "incremental": true,                   /* Enable incremental compilation */
     "target": "ESNEXT",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
-    "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
+    "module": "ES2020",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
     // "lib": [],                             /* Specify library files to be included in the compilation. */
     "allowJs": true,                       /* Allow javascript files to be compiled. */
     // "checkJs": true,                       /* Report errors in .js files. */