diff --git a/Gruntfile.js b/Gruntfile.js
index 74251b11e6..ce390aebe8 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -267,6 +267,10 @@ module.exports = grunt => {
         cp.execSync("node js/scripts/prepare-lib-original");
     });
 
+    grunt.registerTask('prepare-lib', () => {
+        cp.execSync("node js/scripts/prepare-lib");
+    });
+
     grunt.registerTask('chmod-folders', () => {
         cp.execSync(
             "find . -type d -exec chmod 755 {} +",
@@ -443,6 +447,7 @@ module.exports = grunt => {
         'prepare-lib-original',
         'uglify:bundle',
         'copy:frontendLib',
+        'prepare-lib',
         'uglify:lib',
     ]);
 
diff --git a/js/scripts/prepare-lib.js b/js/scripts/prepare-lib.js
new file mode 100644
index 0000000000..a6ec15b95f
--- /dev/null
+++ b/js/scripts/prepare-lib.js
@@ -0,0 +1,53 @@
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM - Open Source CRM application.
+ * Copyright (C) 2014-2022 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
+ * Website: https://www.espocrm.com
+ *
+ * EspoCRM is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * EspoCRM is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with EspoCRM. If not, see http://www.gnu.org/licenses/.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+const fs = require('fs');
+const buildUtils = require('../build-utils');
+
+const libs = require('./../../frontend/libs.json');
+
+let stripSourceMappingUrl = path => {
+    /** @var {string} */
+    let originalContents = fs.readFileSync(path, {encoding: 'utf-8'});
+
+    let re = /\/\/# sourceMappingURL.*/g;
+
+    if (!originalContents.match(re)) {
+        return;
+    }
+
+    let contents = originalContents.replaceAll(re, '');
+
+    fs.writeFileSync(path, contents, {encoding: 'utf-8'});
+}
+
+buildUtils.getCopyLibDataList(libs)
+    .filter(item => !item.minify)
+    .forEach(item => {
+        stripSourceMappingUrl(item.dest);
+    });