diff --git a/package.json b/package.json
index 512de1597..b132e0a83 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
     "vue-eslint-parser": "^7.1.0"
   },
   "devDependencies": {
-    "@types/eslint": "^6.8.1",
+    "@types/eslint": "^7.2.0",
     "@types/natural-compare": "^1.4.0",
     "@types/node": "^13.13.5",
     "@typescript-eslint/parser": "^3.0.2",
diff --git a/tools/update-lib-configs.js b/tools/update-lib-configs.js
index df19f3619..ff026eca0 100644
--- a/tools/update-lib-configs.js
+++ b/tools/update-lib-configs.js
@@ -88,6 +88,10 @@ categories.forEach((category) => {
 })
 
 // Format files.
-const linter = new eslint.CLIEngine({ fix: true })
-const report = linter.executeOnFiles([ROOT])
-eslint.CLIEngine.outputFixes(report)
+async function format() {
+  const linter = new eslint.ESLint({ fix: true })
+  const report = await linter.lintFiles([ROOT])
+  eslint.ESLint.outputFixes(report)
+}
+
+format()
diff --git a/tools/update-lib-index.js b/tools/update-lib-index.js
index 6c93c3a3d..378de4349 100644
--- a/tools/update-lib-index.js
+++ b/tools/update-lib-index.js
@@ -43,6 +43,10 @@ module.exports = {
 fs.writeFileSync(filePath, content)
 
 // Format files.
-const linter = new eslint.CLIEngine({ fix: true })
-const report = linter.executeOnFiles([filePath])
-eslint.CLIEngine.outputFixes(report)
+async function format() {
+  const linter = new eslint.ESLint({ fix: true })
+  const report = await linter.lintFiles([filePath])
+  eslint.ESLint.outputFixes(report)
+}
+
+format()