diff --git a/CHANGES.md b/CHANGES.md
index 380d8cc9..3953bcbb 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -11,9 +11,11 @@
 
 ## develop
 
+- [UPDATE] tsconfig.json を統一する
+  - @voluntas
 - [UPDATE] CI の pnpm を 9 に上げる
   - @voluntas
-- [UPDATE] Biome 1.7.1 に上げる
+- [UPDATE] Biome 1.7.3 に上げる
   - @voluntas
 - [ADD] `tsc --noEmit` で型チェックを行うようにする
   - @voluntas
diff --git a/packages/e2ee/rollup.config.mjs b/packages/e2ee/rollup.config.mjs
index f9888b0d..541f8092 100644
--- a/packages/e2ee/rollup.config.mjs
+++ b/packages/e2ee/rollup.config.mjs
@@ -1,8 +1,8 @@
-import fs from "fs";
-import resolve from "@rollup/plugin-node-resolve";
-import typescript from "@rollup/plugin-typescript";
-import replace from "@rollup/plugin-replace";
-import pkg from "./package.json";
+import fs from 'node:fs'
+import resolve from '@rollup/plugin-node-resolve'
+import replace from '@rollup/plugin-replace'
+import typescript from '@rollup/plugin-typescript'
+import pkg from './package.json'
 
 const banner = `/**
  * ${pkg.name}
@@ -11,12 +11,12 @@ const banner = `/**
  * @author: ${pkg.author}
  * @license: ${pkg.license}
  **/
-`;
-const workerScript = fs.readFileSync("./_worker/sora_e2ee_worker.js", "base64");
+`
+const workerScript = fs.readFileSync('./_worker/sora_e2ee_worker.js', 'base64')
 
 export default [
   {
-    input: "src/sora_e2ee.ts",
+    input: 'src/sora_e2ee.ts',
     plugins: [
       replace({
         __SORA_E2EE_VERSION__: pkg.version,
@@ -25,15 +25,15 @@ export default [
       }),
       resolve(),
       typescript({
-        tsconfig: "./tsconfig.json",
+        tsconfig: './tsconfig.json',
       }),
     ],
     output: {
       sourcemap: false,
-      file: "dist/sora_e2ee.mjs",
-      format: "module",
-      name: "SoraE2EE",
+      file: 'dist/sora_e2ee.mjs',
+      format: 'module',
+      name: 'SoraE2EE',
       banner: banner,
     },
   },
-];
+]
diff --git a/packages/e2ee/tsconfig.json b/packages/e2ee/tsconfig.json
index 6b55fd86..f941f0f2 100644
--- a/packages/e2ee/tsconfig.json
+++ b/packages/e2ee/tsconfig.json
@@ -1,29 +1,8 @@
 {
+  "extends": "../../tsconfig.json",
   "compilerOptions": {
-    "target": "es2020",
-    "module": "es2020",
-    "strict": true,
-    "declaration": true,
-    "strictNullChecks": true,
-    "importHelpers": true,
-    "moduleResolution": "node",
-    "experimentalDecorators": true,
-    "esModuleInterop": true,
-    "allowSyntheticDefaultImports": true,
-    "resolveJsonModule": true,
-    "newLine": "LF",
-    "lib": [
-      "esnext",
-      "dom",
-      "dom.iterable",
-      "scripthost"
-    ],
     "declarationDir": "."
   },
-  "include": [
-    "src/sora_e2ee.ts"
-  ],
-  "exclude": [
-    "node_modules"
-  ]
+  "include": ["src/sora_e2ee.ts"],
+  "exclude": ["node_modules"]
 }
diff --git a/packages/sdk/tsconfig.json b/packages/sdk/tsconfig.json
index 41a45e82..d1ba3ae0 100644
--- a/packages/sdk/tsconfig.json
+++ b/packages/sdk/tsconfig.json
@@ -1,21 +1,7 @@
 {
+  "extends": "../../tsconfig.json",
   "compilerOptions": {
-    "target": "es2020",
-    "module": "es2020",
-    "strict": true,
-    "declaration": true,
-    "strictNullChecks": true,
-    "importHelpers": true,
-    "moduleResolution": "node",
-    "experimentalDecorators": true,
-    "esModuleInterop": true,
-    "allowSyntheticDefaultImports": true,
-    "resolveJsonModule": true,
-    "stripInternal": true,
-    "newLine": "LF",
-    "types": [],
-    "lib": ["esnext", "dom", "dom.iterable", "scripthost"],
-    "declarationDir": "../../"
+    "declarationDir": "./types"
   },
   "include": ["src/**/*.ts"],
   "exclude": ["node_modules", "tests"]