diff --git a/.github/workflows/integration-test.yml b/.github/workflows/integration-test.yml
index 00f116c..9874717 100644
--- a/.github/workflows/integration-test.yml
+++ b/.github/workflows/integration-test.yml
@@ -7,7 +7,7 @@ on:
       - completed
 
 env:
-  IMAGE_NAME: alpine:3.10.3
+  IMAGE_NAME: knqyf263/vuln-image
 
 jobs:
   test1:
diff --git a/__tests__/downloader.test.ts b/__tests__/downloader.test.ts
new file mode 100644
index 0000000..c7c8a8e
--- /dev/null
+++ b/__tests__/downloader.test.ts
@@ -0,0 +1,99 @@
+import * as fs from 'fs';
+import { removeTrivyCmd } from './helper';
+import { Downloader } from '../src/downloader';
+
+const downloader = new Downloader();
+
+describe('Check Platform', () => {
+  test('is Liniux', () => {
+    const result = downloader.checkPlatform('linux');
+    expect(result).toBe('Linux');
+  });
+
+  test('is Darwin', () => {
+    const result = downloader.checkPlatform('darwin');
+    expect(result).toBe('macOS');
+  });
+
+  test('is not linux and darwin', () => {
+    expect(() => {
+      downloader.checkPlatform('other');
+    }).toThrowError('Sorry, other is not supported.');
+  });
+});
+
+describe('getDownloadUrl', () => {
+  test('with latest version and linux', async () => {
+    const version = 'latest';
+    const os = 'Linux';
+    const result = await downloader.getDownloadUrl(version, os);
+    expect(result).toMatch(
+      /releases\/download\/v[0-9]+\.[0-9]+\.[0-9]+\/trivy_[0-9]+\.[0-9]+\.[0-9]+_Linux-64bit\.tar\.gz$/
+    );
+  });
+
+  test('with 0.18.3 and macOS', async () => {
+    const version = '0.18.3';
+    const os = 'macOS';
+    const result = await downloader.getDownloadUrl(version, os);
+    expect(result).toMatch(
+      /releases\/download\/v0\.18\.3\/trivy_0\.18\.3_macOS-64bit\.tar\.gz$/
+    );
+  });
+
+  test('with non-supported version', async () => {
+    const version = 'none';
+    const os = 'Linux';
+    await expect(downloader.getDownloadUrl(version, os)).rejects.toThrowError(
+      'Could not find Trivy asset that you specified.'
+    );
+  });
+
+  test('with non-supported os', async () => {
+    const version = 'latest';
+    const os = 'none';
+    await expect(downloader.getDownloadUrl(version, os)).rejects.toThrowError(
+      'Could not find Trivy asset that you specified.'
+    );
+  });
+});
+
+describe('Download trivy command', () => {
+  afterAll(() => {
+    removeTrivyCmd('__tests__');
+  });
+
+  test('with valid download URL and save in __tests__', async () => {
+    let downloadUrl = 'https://github.com/aquasecurity/trivy';
+    downloadUrl += '/releases/download/v0.18.3/trivy_0.18.3_Linux-64bit.tar.gz';
+    const savePath = './__tests__';
+    await expect(
+      downloader.downloadTrivyCmd(downloadUrl, savePath)
+    ).resolves.toEqual(`${savePath}/trivy`);
+  }, 300000);
+
+  test('with invalid download URL', async () => {
+    const downloadUrl = 'https://github.com/this_is_invalid';
+    await expect(downloader.downloadTrivyCmd(downloadUrl)).rejects.toThrow();
+  });
+});
+
+describe('Trivy command', () => {
+  beforeAll(() => {
+    fs.writeFileSync('./trivy', '');
+  });
+
+  afterAll(() => {
+    removeTrivyCmd('.');
+  });
+
+  test('exists', () => {
+    const result = downloader.trivyExists('.');
+    expect(result).toBeTruthy();
+  });
+
+  test('does not exist', () => {
+    const result = downloader.trivyExists('src');
+    expect(result).toBeFalsy();
+  });
+});
diff --git a/__tests__/helper.ts b/__tests__/helper.ts
new file mode 100644
index 0000000..89061f2
--- /dev/null
+++ b/__tests__/helper.ts
@@ -0,0 +1,11 @@
+import * as fs from 'fs';
+import { Downloader } from '../src/downloader';
+
+const downloader = new Downloader();
+
+export function removeTrivyCmd(path: string) {
+  path = path.replace(/\/trivy$/, '');
+  if (downloader.trivyExists(path)) {
+    fs.unlinkSync(`${path}/trivy`);
+  }
+}
diff --git a/__tests__/trivy.test.ts b/__tests__/trivy.test.ts
index 56af097..08a9476 100644
--- a/__tests__/trivy.test.ts
+++ b/__tests__/trivy.test.ts
@@ -1,98 +1,15 @@
-import { Downloader, Trivy } from '../src/trivy';
-import { unlinkSync, writeFileSync } from 'fs';
+import * as fs from 'fs';
+import { Downloader } from '../src/downloader';
+import { Trivy } from '../src/trivy';
 import { Vulnerability, TrivyOption } from '../src/interface';
+import { removeTrivyCmd } from './helper';
 
 const downloader = new Downloader();
 const trivy = new Trivy();
 
-function removeTrivyCmd(path: string) {
-  path = path.replace(/\/trivy$/, '');
-  if (downloader.trivyExists(path)) {
-    unlinkSync(`${path}/trivy`);
-  }
-}
-
-describe('Platform', () => {
-  test('is Liniux', () => {
-    const result = downloader['checkPlatform']('linux');
-    expect(result).toBe('Linux');
-  });
-
-  test('is Darwin', () => {
-    const result = downloader['checkPlatform']('darwin');
-    expect(result).toBe('macOS');
-  });
-
-  test('is not linux and darwin', () => {
-    expect(() => {
-      downloader['checkPlatform']('other');
-    }).toThrowError('Sorry, other is not supported.');
-  });
-});
-
-describe('getDownloadUrl', () => {
-  test('with latest version and linux', async () => {
-    const version = 'latest';
-    const os = 'Linux';
-    const result = await downloader['getDownloadUrl'](version, os);
-    expect(result).toMatch(
-      /releases\/download\/v[0-9]+\.[0-9]+\.[0-9]+\/trivy_[0-9]+\.[0-9]+\.[0-9]+_Linux-64bit\.tar\.gz$/
-    );
-  });
-
-  test('with 0.2.0 and macOS', async () => {
-    const version = '0.2.0';
-    const os = 'macOS';
-    const result = await downloader['getDownloadUrl'](version, os);
-    expect(result).toMatch(
-      /releases\/download\/v0\.2\.0\/trivy_0\.2\.0_macOS-64bit\.tar\.gz$/
-    );
-  });
-
-  test('with non-supported version', async () => {
-    const version = 'none';
-    const os = 'Linux';
-    await expect(
-      downloader['getDownloadUrl'](version, os)
-    ).rejects.toThrowError(
-      'Cloud not be found a Trivy asset that you specified.'
-    );
-  });
-
-  test('with non-supported os', async () => {
-    const version = 'latest';
-    const os = 'none';
-    await expect(
-      downloader['getDownloadUrl'](version, os)
-    ).rejects.toThrowError(
-      'Cloud not be found a Trivy asset that you specified.'
-    );
-  });
-});
-
-describe('Download trivy command', () => {
-  afterAll(() => {
-    removeTrivyCmd('__tests__');
-  });
-
-  test('with valid download URL and save in __tests__', async () => {
-    let downloadUrl = 'https://github.com/aquasecurity/trivy';
-    downloadUrl += '/releases/download/v0.2.1/trivy_0.2.1_Linux-64bit.tar.gz';
-    const savePath = './__tests__';
-    await expect(
-      downloader['downloadTrivyCmd'](downloadUrl, savePath)
-    ).resolves.toEqual(`${savePath}/trivy`);
-  }, 300000);
-
-  test('with invalid download URL', async () => {
-    const downloadUrl = 'https://github.com/this_is_invalid';
-    await expect(downloader['downloadTrivyCmd'](downloadUrl)).rejects.toThrow();
-  });
-});
-
 describe('Trivy command', () => {
   beforeAll(() => {
-    writeFileSync('./trivy', '');
+    fs.writeFileSync('./trivy', '');
   });
 
   afterAll(() => {
@@ -115,9 +32,9 @@ describe('Trivy scan', () => {
   const image: string = 'alpine:3.10';
 
   beforeAll(async () => {
-    trivyPath = !downloader.trivyExists('./__tests__')
-      ? await downloader.download('latest', './__tests__')
-      : './__tests__/trivy';
+    trivyPath = !downloader.trivyExists(__dirname)
+      ? await downloader.download('latest', __dirname)
+      : `${__dirname}/trivy`;
   }, 300000);
 
   afterAll(() => {
diff --git a/package.json b/package.json
index 1d84e69..1241fc8 100644
--- a/package.json
+++ b/package.json
@@ -22,8 +22,9 @@
   "author": "homoluctus",
   "license": "MIT",
   "dependencies": {
-    "@actions/core": "^1.2.6",
-    "@actions/github": "^1.1.0",
+    "@actions/core": "^1.2.7",
+    "@actions/github": "^4.0.0",
+    "@octokit/rest": "^18.5.6",
     "node-fetch": "^2.6.1",
     "tar": "^5.0.5"
   },
diff --git a/src/downloader.ts b/src/downloader.ts
new file mode 100644
index 0000000..3664bd6
--- /dev/null
+++ b/src/downloader.ts
@@ -0,0 +1,116 @@
+import fs from 'fs';
+import zlib from 'zlib';
+import tar from 'tar';
+import * as core from '@actions/core';
+import { Octokit } from '@octokit/rest';
+import fetch, { Response } from 'node-fetch';
+
+export class Downloader {
+  readonly trivyRepo = {
+    owner: 'aquasecurity',
+    repo: 'trivy',
+  };
+
+  async download(
+    version: string,
+    trivyCmdDir: string = __dirname
+  ): Promise<string> {
+    const os = this.checkPlatform(process.platform);
+    const downloadUrl = await this.getDownloadUrl(version, os);
+    console.debug(`Download URL: ${downloadUrl}`);
+    const trivyCmdBaseDir = process.env.GITHUB_WORKSPACE || trivyCmdDir;
+    const trivyCmdPath = await this.downloadTrivyCmd(
+      downloadUrl,
+      trivyCmdBaseDir
+    );
+    console.debug(`Trivy Command Path: ${trivyCmdPath}`);
+    return trivyCmdPath;
+  }
+
+  checkPlatform(platform: string): string {
+    switch (platform) {
+      case 'linux':
+        return 'Linux';
+      case 'darwin':
+        return 'macOS';
+      default:
+        const errorMsg = `Sorry, ${platform} is not supported.
+        Trivy support Linux, MacOS, FreeBSD and OpenBSD.`;
+        throw new Error(errorMsg);
+    }
+  }
+
+  async getDownloadUrl(version: string, os: string): Promise<string> {
+    try {
+      const response = await this.getAssets(version);
+      const filename = `trivy_${response.version}_${os}-64bit.tar.gz`;
+      for (const asset of response.assets) {
+        if (asset.name === filename) {
+          return asset.browser_download_url;
+        }
+      }
+      throw new Error(`${filename} does not include in GitHub releases`);
+    } catch (err) {
+      core.error(err.message);
+
+      const errMsg = `Could not find Trivy asset that you specified.
+      Version: ${version}
+      OS: ${os}
+      `;
+      throw new Error(errMsg);
+    }
+  }
+
+  async getAssets(
+    version: string
+  ): Promise<{
+    assets: any;
+    version: string;
+  }> {
+    let response;
+    const client = new Octokit();
+
+    if (version === 'latest') {
+      response = await client.repos.getLatestRelease({ ...this.trivyRepo });
+      version = response.data.tag_name.replace(/v/, '');
+    } else {
+      response = await client.repos.getReleaseByTag({
+        ...this.trivyRepo,
+        tag: `v${version}`,
+      });
+    }
+
+    return { assets: response.data.assets, version };
+  }
+
+  async downloadTrivyCmd(
+    downloadUrl: string,
+    savedPath: string = '.'
+  ): Promise<string> {
+    const response: Response = await fetch(downloadUrl);
+
+    return new Promise((resolve, reject) => {
+      const gunzip = zlib.createGunzip();
+      const extract = tar.extract({ C: savedPath }, ['trivy']);
+      response.body
+        .on('error', reject)
+        .pipe(gunzip)
+        .on('error', reject)
+        .pipe(extract)
+        .on('error', reject)
+        .on('finish', () => {
+          if (!this.trivyExists(savedPath)) {
+            reject('Failed to extract Trivy command file.');
+          }
+          resolve(`${savedPath}/trivy`);
+        });
+    });
+  }
+
+  trivyExists(targetDir: string): boolean {
+    const trivyCmdPaths: string[] = fs
+      .readdirSync(targetDir)
+      .filter(f => f === 'trivy');
+    return trivyCmdPaths.length === 1;
+  }
+}
diff --git a/src/github.ts b/src/github.ts
new file mode 100644
index 0000000..e35a465
--- /dev/null
+++ b/src/github.ts
@@ -0,0 +1,64 @@
+import * as core from '@actions/core';
+import * as github from '@actions/github';
+import { Octokit } from '@octokit/rest';
+import { IssueOption, IssueResponse } from './interface';
+
+export class GitHub {
+  client: Octokit;
+
+  constructor(token: string) {
+    this.client = new Octokit({ auth: token });
+  }
+
+  async getTrivyIssues(image: string, labels: string[] | undefined) {
+    if (labels == null) {
+      return [];
+    }
+
+    let { data: trivyIssues } = await this.client.issues.listForRepo({
+      ...github.context.repo,
+      state: 'open',
+      labels: labels.join(','),
+    });
+
+    return trivyIssues.filter(issue => issue.body.includes(image));
+  }
+
+  async createIssue(options: IssueOption): Promise<IssueResponse> {
+    const { data: issue } = await this.client.issues.create({
+      ...github.context.repo,
+      ...options,
+    });
+    return { issueNumber: issue.number, htmlUrl: issue.html_url };
+  }
+
+  async updateIssue(issueNumber: number, options: IssueOption): Promise<void> {
+    await this.client.issues.update({
+      ...github.context.repo,
+      issue_number: issueNumber,
+      body: options.body,
+    });
+  }
+
+  async createOrUpdateIssue(
+    image: string,
+    options: IssueOption
+  ): Promise<IssueResponse> {
+    const trivyIssues = await this.getTrivyIssues(image, options.labels);
+
+    if (trivyIssues.length > 0) {
+      core.info('Found existing issue. Updating existing issue.');
+
+      const existingIssue = trivyIssues[0];
+      await this.updateIssue(existingIssue.number, options);
+      return {
+        issueNumber: existingIssue.number,
+        htmlUrl: existingIssue.html_url,
+      };
+    } else {
+      core.info('Create new issue');
+
+      return await this.createIssue(options);
+    }
+  }
+}
diff --git a/src/index.ts b/src/index.ts
index ad46d9a..41b9e43 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,85 +1,67 @@
 import * as core from '@actions/core';
-import { Trivy, Downloader } from './trivy';
-import { createOrUpdateIssue } from './issue';
-import {
-  TrivyOption,
-  IssueOption,
-  IssueResponse,
-  Vulnerability,
-} from './interface';
+import { Downloader } from './downloader';
+import { GitHub } from './github';
+import { Trivy } from './trivy';
+import { TrivyOption, IssueOption, Vulnerability } from './interface';
 
 async function run() {
-  try {
-    const trivyVersion: string = core
-      .getInput('trivy_version')
-      .replace(/^v/, '');
-    const image: string | undefined =
-      core.getInput('image') || process.env.IMAGE_NAME;
-    const issueFlag: boolean = core.getInput('issue').toLowerCase() == 'true';
+  const trivyVersion = core.getInput('trivy_version').replace(/^v/, '');
+  const image = core.getInput('image') || process.env.IMAGE_NAME;
+  const issueFlag = core.getInput('issue').toLowerCase() == 'true';
 
-    if (image === undefined || image === '') {
-      throw new Error('Please specify scan target image name');
-    }
+  if (!image) {
+    throw new Error('Please specify scan target image name');
+  }
 
-    const trivyOption: TrivyOption = {
-      severity: core.getInput('severity').replace(/\s+/g, ''),
-      vulnType: core.getInput('vuln_type').replace(/\s+/g, ''),
-      ignoreUnfixed: core.getInput('ignore_unfixed').toLowerCase() === 'true',
-      format: issueFlag ? 'json' : 'table',
-    };
+  const trivyOption: TrivyOption = {
+    severity: core.getInput('severity').replace(/\s+/g, ''),
+    vulnType: core.getInput('vuln_type').replace(/\s+/g, ''),
+    ignoreUnfixed: core.getInput('ignore_unfixed').toLowerCase() === 'true',
+    format: issueFlag ? 'json' : 'table',
+  };
 
-    const downloader = new Downloader();
-    const trivyCmdPath: string = await downloader.download(trivyVersion);
+  const downloader = new Downloader();
+  const trivyCmdPath = await downloader.download(trivyVersion);
 
-    const trivy = new Trivy();
-    const result: Vulnerability[] | string = trivy.scan(
-      trivyCmdPath,
-      image,
-      trivyOption
-    );
+  const trivy = new Trivy();
+  const result = trivy.scan(trivyCmdPath, image, trivyOption);
 
-    if (!issueFlag) {
-      core.info(
-        `Not create a issue because issue parameter is false.
-        Vulnerabilities:
-        ${result}`
-      );
-      return;
-    }
+  if (!issueFlag) {
+    core.info(`Not create a issue because issue parameter is false.
+      Vulnerabilities: ${result}`);
+    return;
+  }
 
-    const issueContent: string = trivy.parse(image, result as Vulnerability[]);
+  const issueContent = trivy.parse(image, result as Vulnerability[]);
+  if (issueContent === '') {
+    core.info(
+      'Vulnerabilities were not found.\nYour maintenance looks good 👍'
+    );
+    return;
+  }
 
-    if (issueContent === '') {
-      core.info(
-        'Vulnerabilities were not found.\nYour maintenance looks good 👍'
-      );
-      return;
-    }
+  const issueOption = {
+    title: core.getInput('issue_title'),
+    body: issueContent,
+    labels: core
+      .getInput('issue_label')
+      .replace(/\s+/g, '')
+      .split(','),
+    assignees: core
+      .getInput('issue_assignee')
+      .replace(/\s+/g, '')
+      .split(','),
+  };
+  const token = core.getInput('token', { required: true });
+  const github = new GitHub(token);
+  const output = await github.createOrUpdateIssue(image, issueOption);
 
-    const issueOption: IssueOption = {
-      title: core.getInput('issue_title'),
-      body: issueContent,
-      labels: core
-        .getInput('issue_label')
-        .replace(/\s+/g, '')
-        .split(','),
-      assignees: core
-        .getInput('issue_assignee')
-        .replace(/\s+/g, '')
-        .split(','),
-    };
-    const token: string = core.getInput('token', { required: true });
-    const output: IssueResponse = await createOrUpdateIssue(token, image, issueOption);
-    core.setOutput('html_url', output.htmlUrl);
-    core.setOutput('issue_number', output.issueNumber.toString());
+  core.setOutput('html_url', output.htmlUrl);
+  core.setOutput('issue_number', output.issueNumber.toString());
 
-    if (core.getInput("fail_on_vulnerabilities") === 'true') {
-      core.setFailed(`Vulnerabilities found.\n${issueContent}`)
-    }
-  } catch (error) {
-    core.error(error.stack);
-    core.setFailed(error.message);
+  if (core.getInput('fail_on_vulnerabilities') === 'true') {
+    throw new Error(`Vulnerabilities found.\n${issueContent}`);
   }
 }
 
-run();
+run().catch(err => core.setFailed(err.message));
diff --git a/src/issue.ts b/src/issue.ts
deleted file mode 100644
index 641b8c6..0000000
--- a/src/issue.ts
+++ /dev/null
@@ -1,76 +0,0 @@
-import { Octokit } from '@octokit/rest';
-import * as core from '@actions/core';
-import * as github from '@actions/github';
-import { IssueOption, IssueResponse } from './interface';
-
-async function getTrivyIssues(client: Octokit, image: string, labels: string[] | undefined) {
-  if (labels == null) {
-    return []
-  }
-
-  let {
-    data: trivyIssues,
-  } = await client.issues.listForRepo(
-    { ...github.context.repo, state: "open", labels: labels.join(",") }
-    );
-
-  return trivyIssues.filter(issue => issue.body.includes(image))
-}
-
-async function createIssue(
-  client: Octokit,
-  options: IssueOption
-): Promise<any> {
-  const {
-    data: issue,
-  }: Octokit.Response<Octokit.IssuesCreateResponse> = await client.issues.create(
-    {
-      ...github.context.repo,
-      ...options,
-    }
-  );
-  return issue
-}
-
-async function updateIssue(
-  issueNumber: number,
-  client: Octokit,
-  options: IssueOption
-): Promise<void> {
-  await client.issues.update(
-    {
-      ...github.context.repo,
-      issue_number: issueNumber,
-      body: options.body
-    }
-  );
-}
-
-export async function createOrUpdateIssue(
-  token: string,
-  image: string,
-  options: IssueOption
-): Promise<IssueResponse> {
-  const client: Octokit = new Octokit({ auth: token });
-
-  const trivyIssues = await getTrivyIssues(client, image, options.labels)
-
-  if (trivyIssues.length > 0) {
-    core.info("Found existing issue. Updating existing issue.")
-
-    const existingIssue = trivyIssues[0]
-    await updateIssue(existingIssue.number, client, options)
-    return {
-      issueNumber: existingIssue.number,
-      htmlUrl: existingIssue.html_url,
-    }
-  } else {
-    core.info("Create new issue")
-
-    const newIssue = await createIssue(client, options)
-    return {
-      issueNumber: newIssue.number,
-      htmlUrl: newIssue.html_url,
-    }
-  }
-}
diff --git a/src/trivy.ts b/src/trivy.ts
index 4514c62..7eb6fa3 100644
--- a/src/trivy.ts
+++ b/src/trivy.ts
@@ -1,128 +1,7 @@
-import fs from 'fs';
-import zlib from 'zlib';
-import tar from 'tar';
-import { Octokit } from '@octokit/rest';
-import fetch, { Response } from 'node-fetch';
 import { spawnSync, SpawnSyncReturns } from 'child_process';
-
 import { TrivyOption, Vulnerability } from './interface';
 import { isIterable } from './utils';
 
-export class Downloader {
-  githubClient: Octokit;
-
-  static readonly trivyRepository = {
-    owner: 'aquasecurity',
-    repo: 'trivy',
-  };
-
-  constructor() {
-    this.githubClient = new Octokit();
-  }
-
-  public async download(
-    version: string,
-    trivyCmdDir: string = __dirname
-  ): Promise<string> {
-    const os: string = this.checkPlatform(process.platform);
-    const downloadUrl: string = await this.getDownloadUrl(version, os);
-    console.debug(`Download URL: ${downloadUrl}`);
-    const trivyCmdBaseDir: string = process.env.GITHUB_WORKSPACE || trivyCmdDir;
-    const trivyCmdPath: string = await this.downloadTrivyCmd(
-      downloadUrl,
-      trivyCmdBaseDir
-    );
-    console.debug(`Trivy Command Path: ${trivyCmdPath}`);
-    return trivyCmdPath;
-  }
-
-  private checkPlatform(platform: string): string {
-    switch (platform) {
-      case 'linux':
-        return 'Linux';
-      case 'darwin':
-        return 'macOS';
-      default:
-        const errorMsg: string = `Sorry, ${platform} is not supported.
-        Trivy support Linux, MacOS, FreeBSD and OpenBSD.`;
-        throw new Error(errorMsg);
-    }
-  }
-
-  private async getDownloadUrl(version: string, os: string): Promise<string> {
-    try {
-      const response = await this.getAssets(version);
-      const filename: string = `trivy_${response.version}_${os}-64bit.tar.gz`;
-      for (const asset of response.assets) {
-        if (asset.name === filename) {
-          return asset.browser_download_url;
-        }
-      }
-      throw new Error();
-    } catch (error) {
-      const errorMsg: string = `
-      Cloud not be found a Trivy asset that you specified.
-      Version: ${version}
-      OS: ${os}
-      `;
-      throw new Error(errorMsg);
-    }
-  }
-
-  private async getAssets(
-    version: string
-  ): Promise<{
-    assets: Octokit.ReposGetLatestReleaseResponseAssetsItem[];
-    version: string;
-  }> {
-    let response: Octokit.Response<Octokit.ReposGetLatestReleaseResponse>;
-
-    if (version === 'latest') {
-      response = await this.githubClient.repos.getLatestRelease({
-        ...Downloader.trivyRepository,
-      });
-      version = response.data.tag_name.replace(/v/, '');
-    } else {
-      response = await this.githubClient.repos.getReleaseByTag({
-        ...Downloader.trivyRepository,
-        tag: `v${version}`,
-      });
-    }
-    return { assets: response.data.assets, version };
-  }
-
-  private async downloadTrivyCmd(
-    downloadUrl: string,
-    savedPath: string = '.'
-  ): Promise<string> {
-    const response: Response = await fetch(downloadUrl);
-
-    return new Promise((resolve, reject) => {
-      const gunzip = zlib.createGunzip();
-      const extract = tar.extract({ C: savedPath }, ['trivy']);
-      response.body
-        .on('error', reject)
-        .pipe(gunzip)
-        .on('error', reject)
-        .pipe(extract)
-        .on('error', reject)
-        .on('finish', () => {
-          if (!this.trivyExists(savedPath)) {
-            reject('Failed to extract Trivy command file.');
-          }
-          resolve(`${savedPath}/trivy`);
-        });
-    });
-  }
-
-  public trivyExists(targetDir: string): boolean {
-    const trivyCmdPaths: string[] = fs
-      .readdirSync(targetDir)
-      .filter(f => f === 'trivy');
-    return trivyCmdPaths.length === 1;
-  }
-}
-
 export class Trivy {
   public scan(
     trivyPath: string,
diff --git a/tsconfig.json b/tsconfig.json
index 960dc9f..e728077 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -59,5 +59,5 @@
     // "experimentalDecorators": true,        /* Enables experimental support for ES7 decorators. */
     // "emitDecoratorMetadata": true,         /* Enables experimental support for emitting type metadata for decorators. */
   },
-  "exclude": ["node_modules", "**/*.test.ts"]
+  "exclude": ["node_modules", "**/*.test.ts", "__tests__/helper.ts"]
 }
diff --git a/yarn.lock b/yarn.lock
index 7bc9624..ba30f46 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,18 +2,27 @@
 # yarn lockfile v1
 
 
-"@actions/core@^1.2.6":
+"@actions/core@^1.2.7":
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/@actions/core/-/core-1.3.0.tgz#f5e4b24c889e7f2e58b466cc8c7481292284eba0"
   integrity sha512-xxtX0Cwdhb8LcgatfJkokqT8KzPvcIbwL9xpLU09nOwBzaStbfm0dNncsP0M4us+EpoPdWy7vbzU5vSOH7K6pg==
 
-"@actions/github@^1.1.0":
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/@actions/github/-/github-1.1.0.tgz#06f34e6b0cf07eb2b3641de3e680dbfae6bcd400"
-  integrity sha512-cHf6PyoNMdei13jEdGPhKprIMFmjVVW/dnM5/9QmQDJ1ZTaGVyezUSCUIC/ySNLRvDUpeFwPYMdThSEJldSbUw==
+"@actions/github@^4.0.0":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/@actions/github/-/github-4.0.0.tgz#d520483151a2bf5d2dc9cd0f20f9ac3a2e458816"
+  integrity sha512-Ej/Y2E+VV6sR9X7pWL5F3VgEWrABaT292DRqRU6R4hnQjPtC/zD3nagxVdXWiRQvYDh8kHXo7IDmG42eJ/dOMA==
+  dependencies:
+    "@actions/http-client" "^1.0.8"
+    "@octokit/core" "^3.0.0"
+    "@octokit/plugin-paginate-rest" "^2.2.3"
+    "@octokit/plugin-rest-endpoint-methods" "^4.0.0"
+
+"@actions/http-client@^1.0.8":
+  version "1.0.11"
+  resolved "https://registry.yarnpkg.com/@actions/http-client/-/http-client-1.0.11.tgz#c58b12e9aa8b159ee39e7dd6cbd0e91d905633c0"
+  integrity sha512-VRYHGQV1rqnROJqdMvGUbY/Kn8vriQe/F9HR2AlYHzmKuM/p3kjNuXhmdBfcVgsvRWTz5C5XW5xvndZrVBuAYg==
   dependencies:
-    "@octokit/graphql" "^2.0.1"
-    "@octokit/rest" "^16.15.0"
+    tunnel "0.0.6"
 
 "@babel/code-frame@^7.0.0", "@babel/code-frame@^7.12.13":
   version "7.12.13"
@@ -374,13 +383,26 @@
     "@types/istanbul-reports" "^1.1.1"
     "@types/yargs" "^13.0.0"
 
-"@octokit/auth-token@^2.4.0":
+"@octokit/auth-token@^2.4.4":
   version "2.4.5"
   resolved "https://registry.yarnpkg.com/@octokit/auth-token/-/auth-token-2.4.5.tgz#568ccfb8cb46f36441fac094ce34f7a875b197f3"
   integrity sha512-BpGYsPgJt05M7/L/5FoE1PiAbdxXFZkX/3kDYcsvd1v6UhlnE5e96dTDr0ezX/EFwciQxf3cNV0loipsURU+WA==
   dependencies:
     "@octokit/types" "^6.0.3"
 
+"@octokit/core@^3.0.0", "@octokit/core@^3.2.3":
+  version "3.4.0"
+  resolved "https://registry.yarnpkg.com/@octokit/core/-/core-3.4.0.tgz#b48aa27d755b339fe7550548b340dcc2b513b742"
+  integrity sha512-6/vlKPP8NF17cgYXqucdshWqmMZGXkuvtcrWCgU5NOI0Pl2GjlmZyWgBMrU8zJ3v2MJlM6++CiB45VKYmhiWWg==
+  dependencies:
+    "@octokit/auth-token" "^2.4.4"
+    "@octokit/graphql" "^4.5.8"
+    "@octokit/request" "^5.4.12"
+    "@octokit/request-error" "^2.0.5"
+    "@octokit/types" "^6.0.3"
+    before-after-hook "^2.2.0"
+    universal-user-agent "^6.0.0"
+
 "@octokit/endpoint@^6.0.1":
   version "6.0.11"
   resolved "https://registry.yarnpkg.com/@octokit/endpoint/-/endpoint-6.0.11.tgz#082adc2aebca6dcefa1fb383f5efb3ed081949d1"
@@ -390,49 +412,49 @@
     is-plain-object "^5.0.0"
     universal-user-agent "^6.0.0"
 
-"@octokit/graphql@^2.0.1":
-  version "2.1.3"
-  resolved "https://registry.yarnpkg.com/@octokit/graphql/-/graphql-2.1.3.tgz#60c058a0ed5fa242eca6f938908d95fd1a2f4b92"
-  integrity sha512-XoXJqL2ondwdnMIW3wtqJWEwcBfKk37jO/rYkoxNPEVeLBDGsGO1TCWggrAlq3keGt/O+C/7VepXnukUxwt5vA==
+"@octokit/graphql@^4.5.8":
+  version "4.6.2"
+  resolved "https://registry.yarnpkg.com/@octokit/graphql/-/graphql-4.6.2.tgz#ec44abdfa87f2b9233282136ae33e4ba446a04e7"
+  integrity sha512-WmsIR1OzOr/3IqfG9JIczI8gMJUMzzyx5j0XXQ4YihHtKlQc+u35VpVoOXhlKAlaBntvry1WpAzPl/a+s3n89Q==
   dependencies:
-    "@octokit/request" "^5.0.0"
-    universal-user-agent "^2.0.3"
+    "@octokit/request" "^5.3.0"
+    "@octokit/types" "^6.0.3"
+    universal-user-agent "^6.0.0"
 
 "@octokit/openapi-types@^7.2.3":
   version "7.2.3"
   resolved "https://registry.yarnpkg.com/@octokit/openapi-types/-/openapi-types-7.2.3.tgz#a7105796db9b85d25d3feba9a1785a124c7803e4"
   integrity sha512-V1ycxkR19jqbIl3evf2RQiMRBvTNRi+Iy9h20G5OP5dPfEF6GJ1DPlUeiZRxo2HJxRr+UA4i0H1nn4btBDPFrw==
 
-"@octokit/plugin-paginate-rest@^1.1.1":
-  version "1.1.2"
-  resolved "https://registry.yarnpkg.com/@octokit/plugin-paginate-rest/-/plugin-paginate-rest-1.1.2.tgz#004170acf8c2be535aba26727867d692f7b488fc"
-  integrity sha512-jbsSoi5Q1pj63sC16XIUboklNw+8tL9VOnJsWycWYR78TKss5PVpIPb1TUUcMQ+bBh7cY579cVAWmf5qG+dw+Q==
+"@octokit/plugin-paginate-rest@^2.2.3", "@octokit/plugin-paginate-rest@^2.6.2":
+  version "2.13.3"
+  resolved "https://registry.yarnpkg.com/@octokit/plugin-paginate-rest/-/plugin-paginate-rest-2.13.3.tgz#f0f1792230805108762d87906fb02d573b9e070a"
+  integrity sha512-46lptzM9lTeSmIBt/sVP/FLSTPGx6DCzAdSX3PfeJ3mTf4h9sGC26WpaQzMEq/Z44cOcmx8VsOhO+uEgE3cjYg==
   dependencies:
-    "@octokit/types" "^2.0.1"
+    "@octokit/types" "^6.11.0"
 
-"@octokit/plugin-request-log@^1.0.0":
+"@octokit/plugin-request-log@^1.0.2":
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/@octokit/plugin-request-log/-/plugin-request-log-1.0.3.tgz#70a62be213e1edc04bb8897ee48c311482f9700d"
   integrity sha512-4RFU4li238jMJAzLgAwkBAw+4Loile5haQMQr+uhFq27BmyJXcXSKvoQKqh0agsZEiUlW6iSv3FAgvmGkur7OQ==
 
-"@octokit/plugin-rest-endpoint-methods@2.4.0":
-  version "2.4.0"
-  resolved "https://registry.yarnpkg.com/@octokit/plugin-rest-endpoint-methods/-/plugin-rest-endpoint-methods-2.4.0.tgz#3288ecf5481f68c494dd0602fc15407a59faf61e"
-  integrity sha512-EZi/AWhtkdfAYi01obpX0DF7U6b1VRr30QNQ5xSFPITMdLSfhcBqjamE3F+sKcxPbD7eZuMHu3Qkk2V+JGxBDQ==
+"@octokit/plugin-rest-endpoint-methods@5.3.1":
+  version "5.3.1"
+  resolved "https://registry.yarnpkg.com/@octokit/plugin-rest-endpoint-methods/-/plugin-rest-endpoint-methods-5.3.1.tgz#deddce769b4ec3179170709ab42e4e9e6195aaa9"
+  integrity sha512-3B2iguGmkh6bQQaVOtCsS0gixrz8Lg0v4JuXPqBcFqLKuJtxAUf3K88RxMEf/naDOI73spD+goJ/o7Ie7Cvdjg==
   dependencies:
-    "@octokit/types" "^2.0.1"
+    "@octokit/types" "^6.16.2"
     deprecation "^2.3.1"
 
-"@octokit/request-error@^1.0.2":
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/@octokit/request-error/-/request-error-1.2.1.tgz#ede0714c773f32347576c25649dc013ae6b31801"
-  integrity sha512-+6yDyk1EES6WK+l3viRDElw96MvwfJxCt45GvmjDUKWjYIb3PJZQkq3i46TwGwoPD4h8NmTrENmtyA1FwbmhRA==
+"@octokit/plugin-rest-endpoint-methods@^4.0.0":
+  version "4.15.1"
+  resolved "https://registry.yarnpkg.com/@octokit/plugin-rest-endpoint-methods/-/plugin-rest-endpoint-methods-4.15.1.tgz#91a064bee99d0ffcef74a04357e1cf15c27d1cd0"
+  integrity sha512-4gQg4ySoW7ktKB0Mf38fHzcSffVZd6mT5deJQtpqkuPuAqzlED5AJTeW8Uk7dPRn7KaOlWcXB0MedTFJU1j4qA==
   dependencies:
-    "@octokit/types" "^2.0.0"
-    deprecation "^2.0.0"
-    once "^1.4.0"
+    "@octokit/types" "^6.13.0"
+    deprecation "^2.3.1"
 
-"@octokit/request-error@^2.0.0":
+"@octokit/request-error@^2.0.0", "@octokit/request-error@^2.0.5":
   version "2.0.5"
   resolved "https://registry.yarnpkg.com/@octokit/request-error/-/request-error-2.0.5.tgz#72cc91edc870281ad583a42619256b380c600143"
   integrity sha512-T/2wcCFyM7SkXzNoyVNWjyVlUwBvW3igM3Btr/eKYiPmucXTtkxt2RBsf6gn3LTzaLSLTQtNmvg+dGsOxQrjZg==
@@ -441,7 +463,7 @@
     deprecation "^2.0.0"
     once "^1.4.0"
 
-"@octokit/request@^5.0.0", "@octokit/request@^5.2.0":
+"@octokit/request@^5.3.0", "@octokit/request@^5.4.12":
   version "5.4.15"
   resolved "https://registry.yarnpkg.com/@octokit/request/-/request-5.4.15.tgz#829da413dc7dd3aa5e2cdbb1c7d0ebe1f146a128"
   integrity sha512-6UnZfZzLwNhdLRreOtTkT9n57ZwulCve8q3IT/Z477vThu6snfdkBuhxnChpOKNGxcQ71ow561Qoa6uqLdPtag==
@@ -453,36 +475,17 @@
     node-fetch "^2.6.1"
     universal-user-agent "^6.0.0"
 
-"@octokit/rest@^16.15.0":
-  version "16.43.2"
-  resolved "https://registry.yarnpkg.com/@octokit/rest/-/rest-16.43.2.tgz#c53426f1e1d1044dee967023e3279c50993dd91b"
-  integrity sha512-ngDBevLbBTFfrHZeiS7SAMAZ6ssuVmXuya+F/7RaVvlysgGa1JKJkKWY+jV6TCJYcW0OALfJ7nTIGXcBXzycfQ==
-  dependencies:
-    "@octokit/auth-token" "^2.4.0"
-    "@octokit/plugin-paginate-rest" "^1.1.1"
-    "@octokit/plugin-request-log" "^1.0.0"
-    "@octokit/plugin-rest-endpoint-methods" "2.4.0"
-    "@octokit/request" "^5.2.0"
-    "@octokit/request-error" "^1.0.2"
-    atob-lite "^2.0.0"
-    before-after-hook "^2.0.0"
-    btoa-lite "^1.0.0"
-    deprecation "^2.0.0"
-    lodash.get "^4.4.2"
-    lodash.set "^4.3.2"
-    lodash.uniq "^4.5.0"
-    octokit-pagination-methods "^1.1.0"
-    once "^1.4.0"
-    universal-user-agent "^4.0.0"
-
-"@octokit/types@^2.0.0", "@octokit/types@^2.0.1":
-  version "2.16.2"
-  resolved "https://registry.yarnpkg.com/@octokit/types/-/types-2.16.2.tgz#4c5f8da3c6fecf3da1811aef678fda03edac35d2"
-  integrity sha512-O75k56TYvJ8WpAakWwYRN8Bgu60KrmX0z1KqFp1kNiFNkgW+JW+9EBKZ+S33PU6SLvbihqd+3drvPxKK68Ee8Q==
+"@octokit/rest@^18.5.6":
+  version "18.5.6"
+  resolved "https://registry.yarnpkg.com/@octokit/rest/-/rest-18.5.6.tgz#8c9a7c9329c7bbf478af20df78ddeab0d21f6d89"
+  integrity sha512-8HdG6ZjQdZytU6tCt8BQ2XLC7EJ5m4RrbyU/EARSkAM1/HP3ceOzMG/9atEfe17EDMer3IVdHWLedz2wDi73YQ==
   dependencies:
-    "@types/node" ">= 8"
+    "@octokit/core" "^3.2.3"
+    "@octokit/plugin-paginate-rest" "^2.6.2"
+    "@octokit/plugin-request-log" "^1.0.2"
+    "@octokit/plugin-rest-endpoint-methods" "5.3.1"
 
-"@octokit/types@^6.0.3", "@octokit/types@^6.7.1":
+"@octokit/types@^6.0.3", "@octokit/types@^6.11.0", "@octokit/types@^6.13.0", "@octokit/types@^6.16.2", "@octokit/types@^6.7.1":
   version "6.16.2"
   resolved "https://registry.yarnpkg.com/@octokit/types/-/types-6.16.2.tgz#62242e0565a3eb99ca2fd376283fe78b4ea057b4"
   integrity sha512-wWPSynU4oLy3i4KGyk+J1BLwRKyoeW2TwRHgwbDz17WtVFzSK2GOErGliruIx8c+MaYtHSYTx36DSmLNoNbtgA==
@@ -564,7 +567,7 @@
     "@types/node" "*"
     form-data "^3.0.0"
 
-"@types/node@*", "@types/node@>= 8":
+"@types/node@*":
   version "15.9.0"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-15.9.0.tgz#0b7f6c33ca5618fe329a9d832b478b4964d325a8"
   integrity sha512-AR1Vq1Ei1GaA5FjKL5PBqblTZsL5M+monvGSZwe6sSIdGiuu7Xr/pNwWJY+0ZQuN8AapD/XMB5IzBAyYRFbocA==
@@ -729,11 +732,6 @@ asynckit@^0.4.0:
   resolved "https://registry.yarnpkg.com/asynckit/-/asynckit-0.4.0.tgz#c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79"
   integrity sha1-x57Zf380y48robyXkLzDZkdLS3k=
 
-atob-lite@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/atob-lite/-/atob-lite-2.0.0.tgz#0fef5ad46f1bd7a8502c65727f0367d5ee43d696"
-  integrity sha1-D+9a1G8b16hQLGVyfwNn1e5D1pY=
-
 atob@^2.1.2:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/atob/-/atob-2.1.2.tgz#6d9517eb9e030d2436666651e86bd9f6f13533c9"
@@ -812,7 +810,7 @@ bcrypt-pbkdf@^1.0.0:
   dependencies:
     tweetnacl "^0.14.3"
 
-before-after-hook@^2.0.0:
+before-after-hook@^2.2.0:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/before-after-hook/-/before-after-hook-2.2.1.tgz#73540563558687586b52ed217dad6a802ab1549c"
   integrity sha512-/6FKxSTWoJdbsLDF8tdIjaRiFXiE6UHsEHE3OPI/cwPURCVi1ukP0gmLn7XWEiFk5TcwQjjY5PWsU+j+tgXgmw==
@@ -885,11 +883,6 @@ bser@2.1.1:
   dependencies:
     node-int64 "^0.4.0"
 
-btoa-lite@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/btoa-lite/-/btoa-lite-1.0.0.tgz#337766da15801210fdd956c22e9c6891ab9d0337"
-  integrity sha1-M3dm2hWAEhD92VbCLpxokaudAzc=
-
 buffer-from@1.x, buffer-from@^1.0.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.1.tgz#32713bc028f75c02fdb710d7c7bcec1f2c6070ef"
@@ -2461,31 +2454,16 @@ locate-path@^3.0.0:
     p-locate "^3.0.0"
     path-exists "^3.0.0"
 
-lodash.get@^4.4.2:
-  version "4.4.2"
-  resolved "https://registry.yarnpkg.com/lodash.get/-/lodash.get-4.4.2.tgz#2d177f652fa31e939b4438d5341499dfa3825e99"
-  integrity sha1-LRd/ZS+jHpObRDjVNBSZ36OCXpk=
-
 lodash.memoize@4.x:
   version "4.1.2"
   resolved "https://registry.yarnpkg.com/lodash.memoize/-/lodash.memoize-4.1.2.tgz#bcc6c49a42a2840ed997f323eada5ecd182e0bfe"
   integrity sha1-vMbEmkKihA7Zl/Mj6tpezRguC/4=
 
-lodash.set@^4.3.2:
-  version "4.3.2"
-  resolved "https://registry.yarnpkg.com/lodash.set/-/lodash.set-4.3.2.tgz#d8757b1da807dde24816b0d6a84bea1a76230b23"
-  integrity sha1-2HV7HagH3eJIFrDWqEvqGnYjCyM=
-
 lodash.sortby@^4.7.0:
   version "4.7.0"
   resolved "https://registry.yarnpkg.com/lodash.sortby/-/lodash.sortby-4.7.0.tgz#edd14c824e2cc9c1e0b0a1b42bb5210516a42438"
   integrity sha1-7dFMgk4sycHgsKG0K7UhBRakJDg=
 
-lodash.uniq@^4.5.0:
-  version "4.5.0"
-  resolved "https://registry.yarnpkg.com/lodash.uniq/-/lodash.uniq-4.5.0.tgz#d0225373aeb652adc1bc82e4945339a842754773"
-  integrity sha1-0CJTc662Uq3BvILklFM5qEJ1R3M=
-
 lodash@^4.17.19:
   version "4.17.21"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
@@ -2498,11 +2476,6 @@ loose-envify@^1.0.0:
   dependencies:
     js-tokens "^3.0.0 || ^4.0.0"
 
-macos-release@^2.2.0:
-  version "2.4.1"
-  resolved "https://registry.yarnpkg.com/macos-release/-/macos-release-2.4.1.tgz#64033d0ec6a5e6375155a74b1a1eba8e509820ac"
-  integrity sha512-H/QHeBIN1fIGJX517pvK8IEK53yQOW7YcEI55oYtgjDdoCQQz7eJS94qt5kNrscReEyuD/JcdFCm2XBEcGOITg==
-
 make-dir@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/make-dir/-/make-dir-2.1.0.tgz#5f0310e18b8be898cc07009295a30ae41e91e6f5"
@@ -2772,11 +2745,6 @@ object.pick@^1.3.0:
   dependencies:
     isobject "^3.0.1"
 
-octokit-pagination-methods@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/octokit-pagination-methods/-/octokit-pagination-methods-1.1.0.tgz#cf472edc9d551055f9ef73f6e42b4dbb4c80bea4"
-  integrity sha512-fZ4qZdQ2nxJvtcasX7Ghl+WlWS/d9IgnBIwFZXVNNZUmzpno91SX5bc5vuxiuKoCtK78XxGGNuSCrDC7xYB3OQ==
-
 once@^1.3.0, once@^1.3.1, once@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
@@ -2796,14 +2764,6 @@ optionator@^0.8.1:
     type-check "~0.3.2"
     word-wrap "~1.2.3"
 
-os-name@^3.0.0, os-name@^3.1.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/os-name/-/os-name-3.1.0.tgz#dec19d966296e1cd62d701a5a66ee1ddeae70801"
-  integrity sha512-h8L+8aNjNcMpo/mAIBPn5PXCM16iyPGjHNWo6U1YO8sJTMHtEtyczI6QJnLoplswm6goopQkqc7OAnjhWcugVg==
-  dependencies:
-    macos-release "^2.2.0"
-    windows-release "^3.1.0"
-
 p-each-series@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/p-each-series/-/p-each-series-1.0.0.tgz#930f3d12dd1f50e7434457a22cd6f04ac6ad7f71"
@@ -3533,6 +3493,11 @@ tunnel-agent@^0.6.0:
   dependencies:
     safe-buffer "^5.0.1"
 
+tunnel@0.0.6:
+  version "0.0.6"
+  resolved "https://registry.yarnpkg.com/tunnel/-/tunnel-0.0.6.tgz#72f1314b34a5b192db012324df2cc587ca47f92c"
+  integrity sha512-1h/Lnq9yajKY2PEbBadPXj3VxsDDu844OnaAo52UVmIzIvwwtBPIuNvkjuzBlTWpfJyUbG3ez0KSBibQkj4ojg==
+
 tweetnacl@^0.14.3, tweetnacl@~0.14.0:
   version "0.14.5"
   resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-0.14.5.tgz#5ae68177f192d4456269d108afa93ff8743f4f64"
@@ -3570,20 +3535,6 @@ union-value@^1.0.0:
     is-extendable "^0.1.1"
     set-value "^2.0.1"
 
-universal-user-agent@^2.0.3:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/universal-user-agent/-/universal-user-agent-2.1.0.tgz#5abfbcc036a1ba490cb941f8fd68c46d3669e8e4"
-  integrity sha512-8itiX7G05Tu3mGDTdNY2fB4KJ8MgZLS54RdG6PkkfwMAavrXu1mV/lls/GABx9O3Rw4PnTtasxrvbMQoBYY92Q==
-  dependencies:
-    os-name "^3.0.0"
-
-universal-user-agent@^4.0.0:
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/universal-user-agent/-/universal-user-agent-4.0.1.tgz#fd8d6cb773a679a709e967ef8288a31fcc03e557"
-  integrity sha512-LnST3ebHwVL2aNe4mejI9IQh2HfZ1RLo8Io2HugSif8ekzD1TlWpHpColOB/eh8JHMLkGH3Akqf040I+4ylNxg==
-  dependencies:
-    os-name "^3.1.0"
-
 universal-user-agent@^6.0.0:
   version "6.0.0"
   resolved "https://registry.yarnpkg.com/universal-user-agent/-/universal-user-agent-6.0.0.tgz#3381f8503b251c0d9cd21bc1de939ec9df5480ee"
@@ -3719,13 +3670,6 @@ which@^1.2.9, which@^1.3.0:
   dependencies:
     isexe "^2.0.0"
 
-windows-release@^3.1.0:
-  version "3.3.3"
-  resolved "https://registry.yarnpkg.com/windows-release/-/windows-release-3.3.3.tgz#1c10027c7225743eec6b89df160d64c2e0293999"
-  integrity sha512-OSOGH1QYiW5yVor9TtmXKQvt2vjQqbYS+DqmsZw+r7xDwLXEeT3JGW0ZppFmHx4diyXmxt238KFR3N9jzevBRg==
-  dependencies:
-    execa "^1.0.0"
-
 word-wrap@~1.2.3:
   version "1.2.3"
   resolved "https://registry.yarnpkg.com/word-wrap/-/word-wrap-1.2.3.tgz#610636f6b1f703891bd34771ccb17fb93b47079c"