diff --git a/dist/img-src-placeholder.umd.cjs b/dist/img-src-placeholder.umd.cjs
deleted file mode 100644
index eb25132..0000000
--- a/dist/img-src-placeholder.umd.cjs
+++ /dev/null
@@ -1,37 +0,0 @@
-//! img-src-placeholder v1.0.2 ~~ https://github.com/center-key/img-src-placeholder ~~ MIT License
-
-(function (factory) {
-    if (typeof module === "object" && typeof module.exports === "object") {
-        var v = factory(require, exports);
-        if (v !== undefined) module.exports = v;
-    }
-    else if (typeof define === "function" && define.amd) {
-        define(["require", "exports", "replacer-util"], factory);
-    }
-})(function (require, exports) {
-    "use strict";
-    Object.defineProperty(exports, "__esModule", { value: true });
-    exports.imgSrcPlaceholder = void 0;
-    const replacer_util_1 = require("replacer-util");
-    const imgSrcPlaceholder = {
-        htmlExts: ['.html', '.htm', '.php', '.aspx', '.asp', '.jsp'],
-        transform(sourceFolder, targetFolder, options) {
-            const defaults = {
-                cd: null,
-                extensions: [],
-                filename: null,
-            };
-            const settings = { ...defaults, ...options };
-            const onePixelSvg = '<svg xmlns="http://www.w3.org/2000/svg" width="1" height="1"></svg>';
-            const dataImage = 'data:image/svg+xml;base64,' + Buffer.from(onePixelSvg).toString('base64');
-            const replacerSettings = {
-                cd: settings.cd,
-                extensions: settings.extensions.length ? settings.extensions : imgSrcPlaceholder.htmlExts,
-                regex: /src=["']?#["']?/gm,
-                replacement: `src="${dataImage}"`,
-            };
-            return replacer_util_1.replacer.transform(sourceFolder, targetFolder, replacerSettings);
-        },
-    };
-    exports.imgSrcPlaceholder = imgSrcPlaceholder;
-});
diff --git a/package.json b/package.json
index 3659866..6728ffa 100644
--- a/package.json
+++ b/package.json
@@ -5,15 +5,14 @@
    "license": "MIT",
    "type": "module",
    "module": "dist/img-src-placeholder.js",
-   "main": "dist/img-src-placeholder.umd.cjs",
+   "main": "dist/img-src-placeholder.js",
    "types": "dist/img-src-placeholder.d.ts",
    "files": [
       "dist"
    ],
    "exports": {
       ".": {
-         "import": "./dist/img-src-placeholder.js",
-         "require": "./dist/img-src-placeholder.umd.cjs"
+         "import": "./dist/img-src-placeholder.js"
       },
       "./": "./dist/"
    },
@@ -73,8 +72,6 @@
       ],
       "build": [
          "tsc",
-         "tsc --module UMD --outDir build/umd",
-         "copy-file build/umd/img-src-placeholder.js build/img-src-placeholder.umd.cjs",
          "add-dist-header build dist"
       ]
    },
@@ -94,8 +91,8 @@
    "devDependencies": {
       "@types/fancy-log": "~2.0",
       "@types/node": "~20.3",
-      "@typescript-eslint/eslint-plugin": "~5.59",
-      "@typescript-eslint/parser": "~5.59",
+      "@typescript-eslint/eslint-plugin": "~5.60",
+      "@typescript-eslint/parser": "~5.60",
       "add-dist-header": "~1.0",
       "assert-deep-strict-equal": "~1.0",
       "copy-file-util": "~1.0",
diff --git a/spec/mocha.spec.js b/spec/mocha.spec.js
index 14b20a0..27d534b 100644
--- a/spec/mocha.spec.js
+++ b/spec/mocha.spec.js
@@ -20,7 +20,6 @@ describe('The "dist" folder', () => {
       const expected = [
          'img-src-placeholder.d.ts',
          'img-src-placeholder.js',
-         'img-src-placeholder.umd.cjs',
          ];
       assertDeepStrictEqual(actual, expected);
       });
@@ -82,7 +81,7 @@ describe('Executing the CLI', () => {
    const run = (posix) => {
       const name =    Object.keys(pkg.bin).sort()[0];
       const command = process.platform === 'win32' ? posix.replaceAll('\\ ', '" "') : posix;
-      execSync(command.replace(name, 'node bin/cli.js'), { stdio: 'inherit' });
+      return execSync(command.replace(name, 'node bin/cli.js'), { stdio: 'inherit' });
       };
 
    it('creates the expected file with the correct <img> placeholder', () => {