diff --git a/dist/index.js b/dist/index.js
index 199be5a..a0424b5 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -28934,15 +28934,6 @@ var __importStar = (this && this.__importStar) || function (mod) {
     __setModuleDefault(result, mod);
     return result;
 };
-var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
-    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
-    return new (P || (P = Promise))(function (resolve, reject) {
-        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
-        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
-        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
-        step((generator = generator.apply(thisArg, _arguments || [])).next());
-    });
-};
 Object.defineProperty(exports, "__esModule", ({ value: true }));
 exports.retrieve = void 0;
 const github = __importStar(__nccwpck_require__(5438));
@@ -28954,73 +28945,67 @@ const github = __importStar(__nccwpck_require__(5438));
  *
  * @returns   string[]
  */
-function retrieve(inputs, token) {
+async function retrieve(inputs, token) {
     var _a, _b;
-    return __awaiter(this, void 0, void 0, function* () {
-        const result = [];
-        switch (github.context.eventName) {
-            case 'pull_request': {
-                const pullRequest = (_a = github.context.payload) === null || _a === void 0 ? void 0 : _a.pull_request;
-                if (pullRequest) {
-                    return extractMessagesFromPullRequest(
-                    // Action payloads are the same as WebHook payloads, so cast is safe.
-                    pullRequest, inputs, token);
-                }
-                else {
-                    throw new Error(`No pull_request found in the payload.`);
-                }
-                break;
+    const result = [];
+    switch (github.context.eventName) {
+        case 'pull_request': {
+            const pullRequest = (_a = github.context.payload) === null || _a === void 0 ? void 0 : _a.pull_request;
+            if (pullRequest) {
+                return extractMessagesFromPullRequest(
+                // Action payloads are the same as WebHook payloads, so cast is safe.
+                pullRequest, inputs, token);
             }
-            case 'push': {
-                const commits = (_b = github.context.payload) === null || _b === void 0 ? void 0 : _b.commits;
-                if (commits) {
-                    for (const commit of commits) {
-                        if (commit.message) {
-                            result.push(commit.message);
-                        }
+            else {
+                throw new Error(`No pull_request found in the payload.`);
+            }
+            break;
+        }
+        case 'push': {
+            const commits = (_b = github.context.payload) === null || _b === void 0 ? void 0 : _b.commits;
+            if (commits) {
+                for (const commit of commits) {
+                    if (commit.message) {
+                        result.push(commit.message);
                     }
                 }
-                if (result.length === 0) {
-                    throw new Error(`No commits found in the payload.`);
-                }
-                break;
             }
-            default: {
-                throw new Error(`Unhandled event: ${github.context.eventName}`);
+            if (result.length === 0) {
+                throw new Error(`No commits found in the payload.`);
             }
+            break;
         }
-        return result;
-    });
+        default: {
+            throw new Error(`Unhandled event: ${github.context.eventName}`);
+        }
+    }
+    return result;
 }
 exports.retrieve = retrieve;
-function extractMessagesFromPullRequest(pullRequest, inputs, token) {
-    return __awaiter(this, void 0, void 0, function* () {
-        if (!inputs.validatePullRequestCommits) {
-            let msg = pullRequest.title;
-            if (pullRequest.body) {
-                msg = msg.concat('\n\n', pullRequest.body);
-            }
-            return [msg];
+async function extractMessagesFromPullRequest(pullRequest, inputs, token) {
+    if (!inputs.validatePullRequestCommits) {
+        let msg = pullRequest.title;
+        if (pullRequest.body) {
+            msg = msg.concat('\n\n', pullRequest.body);
         }
-        return getCommits(pullRequest, token);
-    });
+        return [msg];
+    }
+    return getCommits(pullRequest, token);
 }
-function getCommits(pullRequest, token) {
+async function getCommits(pullRequest, token) {
     var _a;
-    return __awaiter(this, void 0, void 0, function* () {
-        // Head repository where commits are registered. Value is null when the PR within a single repository,
-        // in which use base repository instead.
-        const repo = (_a = pullRequest.head.repo) !== null && _a !== void 0 ? _a : pullRequest.base.repo;
-        if (repo.private && token === undefined) {
-            throw new Error('GitHub token is required to validate pull request commits on private repository.');
-        }
-        const octokit = github.getOctokit(token !== null && token !== void 0 ? token : '');
-        const commits = yield octokit.request({
-            method: 'GET',
-            url: pullRequest.commits_url,
-        });
-        return commits.data.map(({ commit }) => commit.message);
+    // Head repository where commits are registered. Value is null when the PR within a single repository,
+    // in which use base repository instead.
+    const repo = (_a = pullRequest.head.repo) !== null && _a !== void 0 ? _a : pullRequest.base.repo;
+    if (repo.private && token === undefined) {
+        throw new Error('GitHub token is required to validate pull request commits on private repository.');
+    }
+    const octokit = github.getOctokit(token !== null && token !== void 0 ? token : '');
+    const commits = await octokit.request({
+        method: 'GET',
+        url: pullRequest.commits_url,
     });
+    return commits.data.map(({ commit }) => commit.message);
 }
 
 
@@ -29547,15 +29532,6 @@ var __importStar = (this && this.__importStar) || function (mod) {
     __setModuleDefault(result, mod);
     return result;
 };
-var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
-    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
-    return new (P || (P = Promise))(function (resolve, reject) {
-        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
-        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
-        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
-        step((generator = generator.apply(thisArg, _arguments || [])).next());
-    });
-};
 Object.defineProperty(exports, "__esModule", ({ value: true }));
 exports.run = void 0;
 const core = __importStar(__nccwpck_require__(2186));
@@ -29563,97 +29539,93 @@ const commitMessages = __importStar(__nccwpck_require__(8611));
 const inspection = __importStar(__nccwpck_require__(7647));
 const represent = __importStar(__nccwpck_require__(4478));
 const input = __importStar(__nccwpck_require__(6747));
-function runWithExceptions() {
-    return __awaiter(this, void 0, void 0, function* () {
-        ////
-        // Parse inputs
-        ////
-        const additionalVerbsInput = core.getInput('additional-verbs', {
-            required: false,
-        });
-        const pathToAdditionalVerbsInput = core.getInput('path-to-additional-verbs', {
-            required: false,
-        });
-        const allowOneLinersInput = core.getInput('allow-one-liners', {
-            required: false,
-        });
-        const maxSubjectLengthInput = core.getInput('max-subject-line-length', {
-            required: false,
-        });
-        const maxBodyLineLengthInput = core.getInput('max-body-line-length', {
-            required: false,
-        });
-        const enforceSignOffInput = core.getInput('enforce-sign-off', {
-            required: false,
-        });
-        const validatePullRequestCommitsInput = core.getInput('validate-pull-request-commits', {
-            required: false,
-        });
-        const skipBodyCheckInput = core.getInput('skip-body-check', {
-            required: false,
-        });
-        const ignoreMergeCommitsInput = core.getInput('ignore-merge-commits', {
-            required: false,
-        });
-        const ignorePatternsInput = core.getInput('ignore-patterns', {
-            required: false,
-        });
-        const maybeInputs = input.parseInputs({
-            additionalVerbsInput,
-            pathToAdditionalVerbsInput,
-            allowOneLinersInput,
-            maxSubjectLengthInput,
-            maxBodyLineLengthInput,
-            enforceSignOffInput,
-            validatePullRequestCommitsInput,
-            skipBodyCheckInput,
-            ignoreMergeCommitsInput,
-            ignorePatternsInput,
-        });
-        if (maybeInputs.error !== null) {
-            core.error(maybeInputs.error);
-            core.setFailed(maybeInputs.error);
-            return;
-        }
-        const inputs = maybeInputs.mustInputs();
-        const messages = yield commitMessages.retrieve(inputs, core.getInput('github-token', { required: false }));
-        ////
-        // Inspect
-        ////
-        // Parts of the error message to be concatenated with '\n'
-        const parts = [];
-        for (const [messageIndex, message] of messages.entries()) {
-            const errors = inspection.check(message, inputs);
-            if (errors.length > 0) {
-                const repr = represent.formatErrors(message, messageIndex, errors);
-                parts.push(repr);
-            }
-            else {
-                core.info(`The message is OK:\n---\n${message}\n---`);
-            }
+async function runWithExceptions() {
+    ////
+    // Parse inputs
+    ////
+    const additionalVerbsInput = core.getInput('additional-verbs', {
+        required: false,
+    });
+    const pathToAdditionalVerbsInput = core.getInput('path-to-additional-verbs', {
+        required: false,
+    });
+    const allowOneLinersInput = core.getInput('allow-one-liners', {
+        required: false,
+    });
+    const maxSubjectLengthInput = core.getInput('max-subject-line-length', {
+        required: false,
+    });
+    const maxBodyLineLengthInput = core.getInput('max-body-line-length', {
+        required: false,
+    });
+    const enforceSignOffInput = core.getInput('enforce-sign-off', {
+        required: false,
+    });
+    const validatePullRequestCommitsInput = core.getInput('validate-pull-request-commits', {
+        required: false,
+    });
+    const skipBodyCheckInput = core.getInput('skip-body-check', {
+        required: false,
+    });
+    const ignoreMergeCommitsInput = core.getInput('ignore-merge-commits', {
+        required: false,
+    });
+    const ignorePatternsInput = core.getInput('ignore-patterns', {
+        required: false,
+    });
+    const maybeInputs = input.parseInputs({
+        additionalVerbsInput,
+        pathToAdditionalVerbsInput,
+        allowOneLinersInput,
+        maxSubjectLengthInput,
+        maxBodyLineLengthInput,
+        enforceSignOffInput,
+        validatePullRequestCommitsInput,
+        skipBodyCheckInput,
+        ignoreMergeCommitsInput,
+        ignorePatternsInput,
+    });
+    if (maybeInputs.error !== null) {
+        core.error(maybeInputs.error);
+        core.setFailed(maybeInputs.error);
+        return;
+    }
+    const inputs = maybeInputs.mustInputs();
+    const messages = await commitMessages.retrieve(inputs, core.getInput('github-token', { required: false }));
+    ////
+    // Inspect
+    ////
+    // Parts of the error message to be concatenated with '\n'
+    const parts = [];
+    for (const [messageIndex, message] of messages.entries()) {
+        const errors = inspection.check(message, inputs);
+        if (errors.length > 0) {
+            const repr = represent.formatErrors(message, messageIndex, errors);
+            parts.push(repr);
         }
-        const errorMessage = parts.join('\n');
-        if (errorMessage.length > 0) {
-            core.setFailed(errorMessage);
+        else {
+            core.info(`The message is OK:\n---\n${message}\n---`);
         }
-    });
+    }
+    const errorMessage = parts.join('\n');
+    if (errorMessage.length > 0) {
+        core.setFailed(errorMessage);
+    }
 }
 /**
  * Main function
  */
-function run() {
-    return __awaiter(this, void 0, void 0, function* () {
-        return runWithExceptions().catch(error => {
-            if (error instanceof Error) {
-                core.error(error);
-                core.setFailed(error.message);
-            }
-            else {
-                const message = `Unexpected error value: ${error}`;
-                core.error(message);
-                core.setFailed(message);
-            }
-        });
+async function run() {
+    return runWithExceptions().catch(error => {
+        if (error instanceof Error) {
+            core.error(error);
+            core.setFailed(error.message);
+        }
+        else {
+            const message = `Unexpected error value: ${error}`;
+            core.error(message);
+            core.setFailed(message);
+        }
     });
 }
 exports.run = run;
diff --git a/tsconfig.json b/tsconfig.json
index aaf5824..188af16 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,6 +1,6 @@
 {
   "compilerOptions": {
-    "target": "es6",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */
+    "target": "ES2019",                       /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */
     "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
     "outDir": "./lib",                        /* Redirect output structure to the directory. */
     "rootDir": "./src",                       /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */