diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 5b86388..572c536 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -1,46 +1,26 @@
 name: Release
 
 on:
+  release:
+    types:
+      - released
   push:
     tags:
-      - 'v*.*.*'
+      - "v*.*.*"
 
 permissions:
   contents: read
 
 jobs:
-  publish:
+  draft:
+    name: Create draft release
+    if: github.event_name == 'push'
     runs-on: ubuntu-latest
-    permissions:
-      contents: write
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
-      - name: Use Node.js v18
-        uses: actions/setup-node@v3
-        with:
-          node-version: 18
-          registry-url: 'https://registry.npmjs.org'
-
-      - uses: denoland/setup-deno@v1
-        with:
-          deno-version: v1.x
-
-      - name: Testing
-        run: deno test
-
-      - name: Build
-        run: deno task build:node ${{ github.ref }}
-
-      - name: Publish to registry.npmjs.com
-        run: |
-          cd ./npm
-          npm publish
-        env:
-          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
-
       - name: Setup git-cliff
         uses: kenji-miyake/setup-git-cliff@v1
 
@@ -57,3 +37,23 @@ jobs:
         with:
           draft: true
           body: ${{ steps.changelog.outputs.result }}
+
+  publish:
+    name: Publish to JSR
+    if: github.event_name == 'release'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: denoland/setup-deno@v1
+        with:
+          deno-version: v1.x
+
+      - name: Publish (dry-run)
+        run: deno publish --dry-run
+
+      - name: Publish
+        run: deno publish
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index e1c22b5..a0e91c4 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -34,3 +34,6 @@ jobs:
       - uses: codecov/codecov-action@v3
         with:
           file: ./coverage.lcov
+
+      - name: Publish (dry run)
+        run: deno publish --dry-run
diff --git a/.vscode/settings.json b/.vscode/settings.json
index cbac569..aa1c94e 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,3 +1,4 @@
 {
-  "deno.enable": true
+  "deno.enable": true,
+  "deno.unstable": true
 }
diff --git a/basic-auth/fetcher.test.ts b/basic-auth/fetcher.test.ts
index db558e5..ed1849e 100644
--- a/basic-auth/fetcher.test.ts
+++ b/basic-auth/fetcher.test.ts
@@ -1,9 +1,5 @@
-import {
-  assertInstanceOf,
-  assertSpyCalls,
-  assertStrictEquals,
-  stub,
-} from "../deps_test.ts";
+import { assertInstanceOf, assertStrictEquals } from "@std/assert";
+import { assertSpyCalls, stub } from "@std/testing/mock";
 import { fetcher as basicAuth } from "./fetcher.ts";
 
 Deno.test('When calling fetch, the "Authorization" header must be set to the correct value.', async () => {
diff --git a/basic-auth/fetcher.ts b/basic-auth/fetcher.ts
index 45e6d84..16303e4 100644
--- a/basic-auth/fetcher.ts
+++ b/basic-auth/fetcher.ts
@@ -1,4 +1,4 @@
-import { base64encode } from "../deps.ts";
+import { encodeBase64 } from "@std/encoding/base64";
 import { resolveURL } from "../utils/url.ts";
 
 /**
@@ -20,8 +20,11 @@ import { resolveURL } from "../utils/url.ts";
  * @param username your email address
  * @param password your password
  */
-export const fetcher = (username: string, password: string) => {
-  const token = base64encode(`${username}:${password}`);
+export const fetcher = (
+  username: string,
+  password: string,
+): (input: string | Request, init?: RequestInit) => Promise<Response> => {
+  const token = encodeBase64(`${username}:${password}`);
 
   return (input: string | Request, init?: RequestInit) => {
     const url = resolveURL(input);
diff --git a/build.ts b/build.ts
deleted file mode 100644
index aa1d0d2..0000000
--- a/build.ts
+++ /dev/null
@@ -1,113 +0,0 @@
-import { build, emptyDir } from "https://deno.land/x/dnt@0.33.0/mod.ts";
-import * as semver from "https://deno.land/std@0.175.0/semver/mod.ts";
-
-const trimVersion = (str: string) =>
-  /^refs\/tags\/v(.+)$/.exec(str)?.at(1)?.trim();
-const version = semver.valid(trimVersion(Deno.args[0]) ?? null);
-
-if (!version) {
-  console.error("Incorrect version");
-  Deno.exit(1);
-}
-
-await emptyDir("npm");
-await build({
-  entryPoints: ["./mod.ts"],
-  outDir: "./npm",
-  typeCheck: false,
-  test: false, // NOTE: 一時的に無効
-  compilerOptions: {
-    lib: ["dom", "esnext"],
-    target: "ES2020",
-  },
-  package: {
-    name: "twitter-api-fetch",
-    version,
-    description: "fetch-like implementation designed for Twitter API",
-    author: "InkoHX <me@inkohx.dev>",
-    homepage: "https://github.com/nexterias/twitter-api-fetch#readme",
-    license: "MIT",
-    repository: {
-      type: "git",
-      url: "https://github.com/nexterias/twitter-api-fetch.git",
-    },
-    bugs: {
-      url: "https://github.com/nexterias/twitter-api-fetch/issues",
-    },
-    keywords: [
-      "twitter-api",
-      "fetch",
-    ],
-  },
-  shims: {
-    crypto: true,
-    deno: "dev",
-    custom: [{
-      package: {
-        name: "cross-fetch",
-        version: "~3.1.5",
-      },
-      globalNames: [
-        {
-          name: "fetch",
-          exportName: "default",
-        },
-        {
-          name: "Request",
-        },
-        {
-          name: "Response",
-        },
-        {
-          name: "Headers",
-        },
-      ],
-    }],
-  },
-});
-
-Deno.copyFileSync("./README.md", "./npm/README.md");
-Deno.copyFileSync("./LICENSE", "./npm/LICENSE");
-
-// Bundling for Edge runtime.
-{
-  const process = Deno.run({
-    cmd: ["deno", "bundle", "./mod.ts", "--", "./npm/edge.js"],
-  });
-  const status = await process.status();
-
-  if (!status.success) {
-    console.error("Bundling failed.");
-    Deno.exit(status.code);
-  }
-
-  await Deno.writeTextFile(
-    "./npm/edge.d.ts",
-    'export * from "./types/mod.js";',
-  );
-
-  const metadata = JSON.parse(
-    await Deno.readTextFile("./npm/package.json"),
-    // deno-lint-ignore no-explicit-any
-  ) as Record<string, any>;
-
-  await Deno.writeTextFile(
-    "./npm/package.json",
-    JSON.stringify(
-      {
-        ...metadata,
-        exports: {
-          ...metadata.exports,
-          "./edge": {
-            import: {
-              types: "./edge.d.ts",
-              default: "./edge.js",
-            },
-          },
-        },
-      },
-      null,
-      2,
-    ),
-  );
-}
diff --git a/deno.json b/deno.json
index 27e41f6..4f730be 100644
--- a/deno.json
+++ b/deno.json
@@ -1,20 +1,23 @@
 {
-  "tasks": {
-    "build:node": "deno run -A ./build.ts"
+  "name": "@nexterias/twitter-api-fetch",
+  "version": "3.0.0",
+  "exports": "./mod.ts",
+  "lock": false,
+  "publish": {
+    "exclude": ["./.github/**/*", "./cliff.toml", "./vscode/**/*"]
   },
   "lint": {
-    "files": {
-      "exclude": ["./npm", "./coverage"]
-    }
+    "exclude": ["./coverage"]
   },
   "fmt": {
-    "files": {
-      "exclude": ["./npm", "./coverage"]
-    }
+    "exclude": ["./coverage"]
   },
   "test": {
-    "files": {
-      "exclude": ["./npm", "./coverage"]
-    }
+    "exclude": ["./coverage"]
+  },
+  "imports": {
+    "@std/assert": "jsr:@std/assert@^0.219.1",
+    "@std/encoding": "jsr:@std/encoding@^0.219.1",
+    "@std/testing": "jsr:@std/testing@^0.219.1"
   }
 }
diff --git a/deno.lock b/deno.lock
deleted file mode 100644
index d0d5bd8..0000000
--- a/deno.lock
+++ /dev/null
@@ -1,140 +0,0 @@
-{
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-    "https://deno.land/x/ts_morph@17.0.1/common/typescript.d.ts": "57e52a0882af4e835473dda27e4316cc31149866970210f9f79b940e916b7838",
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-  }
-}
\ No newline at end of file
diff --git a/deps.ts b/deps.ts
deleted file mode 100644
index d2a3fc4..0000000
--- a/deps.ts
+++ /dev/null
@@ -1 +0,0 @@
-export { encode as base64encode } from "https://deno.land/std@0.175.0/encoding/base64.ts";
diff --git a/deps_test.ts b/deps_test.ts
deleted file mode 100644
index 9403715..0000000
--- a/deps_test.ts
+++ /dev/null
@@ -1,10 +0,0 @@
-export {
-  assertInstanceOf,
-  assertStrictEquals,
-  assertThrows,
-} from "https://deno.land/std@0.175.0/testing/asserts.ts";
-export { FakeTime } from "https://deno.land/std@0.175.0/testing/time.ts";
-export {
-  assertSpyCalls,
-  stub,
-} from "https://deno.land/std@0.175.0/testing/mock.ts";
diff --git a/oauth1/fetcher.ts b/oauth1/fetcher.ts
index 6608a98..11cc1b9 100644
--- a/oauth1/fetcher.ts
+++ b/oauth1/fetcher.ts
@@ -31,7 +31,11 @@ import { resolveURL } from "../utils/url.ts";
  * console.log(await response.json());
  * ```
  */
-export const fetcher = async (credentials: Readonly<OAuth1aCredential>) => {
+export const fetcher = async (
+  credentials: Readonly<OAuth1aCredential>,
+): Promise<
+  (input: string | Request, init?: RequestInit) => Promise<Response>
+> => {
   const signingKey = await createSigningKey({
     secretAccessToken: credentials.secretAccessToken,
     secretConsumerKey: credentials.secretConsumerKey,
diff --git a/oauth1/hmac.test.ts b/oauth1/hmac.test.ts
index c7c75be..7bf84da 100644
--- a/oauth1/hmac.test.ts
+++ b/oauth1/hmac.test.ts
@@ -1,5 +1,5 @@
 import * as hmac from "./hmac.ts";
-import { assertStrictEquals } from "../deps_test.ts";
+import { assertStrictEquals } from "@std/assert";
 import * as oauth1a from "./oauth1a.ts";
 
 const credentials = {
diff --git a/oauth1/hmac.ts b/oauth1/hmac.ts
index 8a57fff..db06817 100644
--- a/oauth1/hmac.ts
+++ b/oauth1/hmac.ts
@@ -5,7 +5,7 @@ import {
   OAuth1aSignedParameters,
 } from "./types.ts";
 import * as percent from "../utils/percent.ts";
-import { base64encode } from "../deps.ts";
+import { encodeBase64 } from "@std/encoding/base64";
 
 /**
  * {@link https://developer.twitter.com/en/docs/authentication/oauth-1-0a/creating-a-signature Creating a signature | Docs | Twitter Developer Platform} - Getting a signing key
@@ -17,7 +17,7 @@ export const combineKeys = (
     OAuth1aCredential,
     "secretAccessToken" | "secretConsumerKey"
   >,
-) =>
+): string =>
   [
     credentials.secretConsumerKey,
     credentials.secretAccessToken,
@@ -28,7 +28,7 @@ export const createSigningKey = (
     OAuth1aCredential,
     "secretAccessToken" | "secretConsumerKey"
   >,
-) => {
+): Promise<CryptoKey> => {
   const key = combineKeys(credentials);
   const textEncoder = new TextEncoder();
 
@@ -73,7 +73,7 @@ export const sign = async (
     textEncoder.encode(message),
   );
 
-  clonedParams.set("oauth_signature", base64encode(hash));
+  clonedParams.set("oauth_signature", encodeBase64(hash));
 
   return clonedParams;
 };
diff --git a/oauth1/oauth1a.test.ts b/oauth1/oauth1a.test.ts
index 7c9d547..013c407 100644
--- a/oauth1/oauth1a.test.ts
+++ b/oauth1/oauth1a.test.ts
@@ -1,9 +1,6 @@
-import {
-  assertInstanceOf,
-  assertStrictEquals,
-  FakeTime,
-  stub,
-} from "../deps_test.ts";
+import { assertInstanceOf, assertStrictEquals } from "@std/assert";
+import { stub } from "@std/testing/mock";
+import { FakeTime } from "@std/testing/time";
 import { createBaseParams, createHttpHeader } from "./oauth1a.ts";
 
 Deno.test("createBaseParams", () => {
diff --git a/oauth1/oauth1a.ts b/oauth1/oauth1a.ts
index 183c816..6c2307c 100644
--- a/oauth1/oauth1a.ts
+++ b/oauth1/oauth1a.ts
@@ -1,4 +1,4 @@
-import { base64encode } from "../deps.ts";
+import { encodeBase64 } from "@std/encoding/base64";
 import { OAuth1aBaseParameters, OAuth1aSignedParameters } from "./types.ts";
 import * as percent from "../utils/percent.ts";
 
@@ -10,7 +10,7 @@ export const createBaseParams = (
 
   return new Map([
     ["oauth_consumer_key", consumerKey],
-    ["oauth_nonce", base64encode(randomBytes)],
+    ["oauth_nonce", encodeBase64(randomBytes)],
     ["oauth_timestamp", (Date.now() / 1000).toFixed(0)],
     ["oauth_token", accessToken],
     ["oauth_version", "1.0"],
diff --git a/oauth2/fetcher.test.ts b/oauth2/fetcher.test.ts
index c33208d..42c9c67 100644
--- a/oauth2/fetcher.test.ts
+++ b/oauth2/fetcher.test.ts
@@ -1,9 +1,5 @@
-import {
-  assertInstanceOf,
-  assertSpyCalls,
-  assertStrictEquals,
-  stub,
-} from "../deps_test.ts";
+import { assertInstanceOf, assertStrictEquals } from "@std/assert";
+import { assertSpyCalls, stub } from "@std/testing/mock";
 import { fetcher as oauth2 } from "./fetcher.ts";
 
 Deno.test('When calling fetch, the "Authorization" header must be set to the correct value.', async () => {
diff --git a/oauth2/fetcher.ts b/oauth2/fetcher.ts
index 74fe8f6..a652e6d 100644
--- a/oauth2/fetcher.ts
+++ b/oauth2/fetcher.ts
@@ -11,7 +11,9 @@ import { resolveURL } from "../utils/url.ts";
  * console.log(await fetcher("/2/tweets"));
  * ```
  */
-export const fetcher = (bearerToken: string) => {
+export const fetcher = (
+  bearerToken: string,
+): (input: string | Request, init?: RequestInit) => Promise<Response> => {
   return (input: string | Request, init?: RequestInit) => {
     const url = resolveURL(input);
     const request = new Request(url, init);
diff --git a/utils/percent.test.ts b/utils/percent.test.ts
index 91bad21..c5140f5 100644
--- a/utils/percent.test.ts
+++ b/utils/percent.test.ts
@@ -1,4 +1,4 @@
-import { assertStrictEquals } from "../deps_test.ts";
+import { assertStrictEquals } from "@std/assert";
 import * as percent from "./percent.ts";
 
 Deno.test("encode", () => {
diff --git a/utils/url.test.ts b/utils/url.test.ts
index bbb12db..2e6c861 100644
--- a/utils/url.test.ts
+++ b/utils/url.test.ts
@@ -2,7 +2,7 @@ import {
   assertInstanceOf,
   assertStrictEquals,
   assertThrows,
-} from "../deps_test.ts";
+} from "@std/assert";
 import { resolveURL } from "./url.ts";
 
 Deno.test("Returns URL (string) when a Request object is passed", () => {
diff --git a/utils/url.ts b/utils/url.ts
index ef46fa1..584f21d 100644
--- a/utils/url.ts
+++ b/utils/url.ts
@@ -1,4 +1,4 @@
-export const ALLOW_HOSTNAMES = new Set([
+export const ALLOW_HOSTNAMES: Set<string> = new Set([
   "gnip-stream.twitter.com",
   "data-api.twitter.com",
   "gnip-stream.gnip.com",
@@ -6,7 +6,7 @@ export const ALLOW_HOSTNAMES = new Set([
   "gnip-api.twitter.com",
 ]);
 
-export const resolveURL = (info: string | Request) => {
+export const resolveURL = (info: string | Request): URL => {
   const url = new URL(
     typeof info === "string" ? info : info.url,
     "https://api.twitter.com",