diff --git a/.github/linters/.eslintrc.yml b/.github/linters/.eslintrc.yml
new file mode 100644
index 0000000..af837f9
--- /dev/null
+++ b/.github/linters/.eslintrc.yml
@@ -0,0 +1,63 @@
+---
+
+#############################
+#############################
+## JavaScript Linter rules ##
+#############################
+#############################
+
+############
+# Env Vars #
+############
+env:
+  browser: true
+  es6: true
+  jest: true
+
+###############
+# Global Vars #
+###############
+globals:
+  Atomics: readonly
+  SharedArrayBuffer: readonly
+  #######################################
+  # Google Apps Script-specific classes #
+  #######################################
+  # CalendarApp: readonly
+  # DocumentApp: readonly
+  # DriveApp: readonly
+  # FormApp: readonly
+  # GmailApp: readonly
+  # HtmlService: readonly
+  # MailApp: readonly
+  # PropertiesService: readonly
+  # ScriptApp: readonly
+  # Session: readonly
+  # SitesApp: readonly
+  # SlidesApp: readonly
+  # SpreadsheetApp: readonly
+  # UrlFetchApp: readonly
+  # Utilities: readonly
+
+###############
+# Parser vars #
+###############
+parser: '@typescript-eslint/parser'
+parserOptions:
+  ecmaVersion: 2018
+  sourceType: script
+
+###########
+# Plugins #
+###########
+extends:
+  - 'eslint:recommended'
+plugins:
+  - '@typescript-eslint'
+
+#########
+# Rules #
+#########
+rules:
+  no-useless-escape: warn
+  semi: error
\ No newline at end of file
diff --git a/.github/workflows/linter.yml b/.github/workflows/linter.yml
index 1b7a8b3..57537bd 100644
--- a/.github/workflows/linter.yml
+++ b/.github/workflows/linter.yml
@@ -16,7 +16,7 @@ name: Lint Code Base
 #############################
 on:
   push:
-    branches-ignore: [main]
+    # branches-ignore: [main]
     # Remove the line above to run when pushing to master
   pull_request:
     branches: [main]
@@ -50,7 +50,7 @@ jobs:
       - name: Lint Code Base
         uses: github/super-linter@v3
         env:
-          VALIDATE_ALL_CODEBASE: false
+          VALIDATE_ALL_CODEBASE: true
           VALIDATE_HTML: true
           VALIDATE_JAVASCRIPT_ES: true
           VALIDATE_JSON: true
diff --git a/README.md b/README.md
index 84972ac..75b1f2b 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # openBD情報チェッカー（Google Chrome拡張機能）
-![Chrome Web Store](https://img.shields.io/chrome-web-store/v/jmbcpombnleepfponcjibgeohkfcocgg) [![GitHub Super-Linter](https://github.com/ttsukagoshi/chrome-ext_openBD-checker/workflows/Lint%20Code%20Base/badge.svg)](https://github.com/marketplace/actions/super-linter) [![Language grade: JavaScript](https://img.shields.io/lgtm/grade/javascript/g/ttsukagoshi/chrome-ext_openBD-checker.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/ttsukagoshi/chrome-ext_openBD-checker/context:javascript)  
+![Chrome Web Store](https://img.shields.io/chrome-web-store/v/jmbcpombnleepfponcjibgeohkfcocgg) [![GitHub Super-Linter](https://github.com/ttsukagoshi/chrome-ext_openBD-checker/workflows/Lint%20Code%20Base/badge.svg)](https://github.com/marketplace/actions/super-linter) [![Total alerts](https://img.shields.io/lgtm/alerts/g/ttsukagoshi/chrome-ext_openBD-checker.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/ttsukagoshi/chrome-ext_openBD-checker/alerts/)  
 ウェブブラウザ（Chrome）内で選択したISBNコードに基づいて、コンテクストメニュー（右クリックメニュー）から[openBD](https://openbd.jp/)に登録されている情報を参照できるようにする拡張機能。
 
 ## インストール
diff --git a/src/background.js b/src/background.js
index 7619c08..2fedda6 100644
--- a/src/background.js
+++ b/src/background.js
@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+/* global chrome */
+
 // Global variable(s)
 const OPENBD_API_VERSION = 'v1'; // openBDのAPIバージョン。 https://openbd.jp/
 
diff --git a/src/manifest.json b/src/manifest.json
index 54b1563..7530152 100644
--- a/src/manifest.json
+++ b/src/manifest.json
@@ -1,6 +1,6 @@
 {
     "name": "openBD情報チェッカー",
-    "version": "1.2.4",
+    "version": "1.2.5",
     "description": "openBDに登録されている書誌・書影情報を、コンテクストメニューからISBNで検索・参照する。",
     "permissions": [
         "contextMenus",
diff --git a/src/result.js b/src/result.js
index f0422b2..2cf16b0 100644
--- a/src/result.js
+++ b/src/result.js
@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+/* global chrome */
+
 window.addEventListener('load', function () {
     // openBD APIから取得した取得したデータをchrome.storageから読み込む
     chrome.storage.local.get(['openBdUrl', 'openBdResponse'], function (result) {