diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8eeaafc7e..edb665ad8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@ Change Log
 v5.4.1
 ---
 * Fixed missing space between keywords (`return`, `throw`, `typeof`) and Unicode surrogate pair identifiers in compact mode. Fixes https://github.com/javascript-obfuscator/javascript-obfuscator/issues/1112
+* Removed `source-map-support` runtime dependency. Use `node --enable-source-maps` instead. Fixes https://github.com/javascript-obfuscator/javascript-obfuscator/issues/1149
 
 v5.4.0
 ---
diff --git a/package.json b/package.json
index 6965d2b8c..3f6f3f765 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,6 @@
     "multimatch": "5.0.0",
     "process": "0.11.10",
     "reflect-metadata": "0.2.2",
-    "source-map-support": "0.5.21",
     "string-template": "1.0.0",
     "stringz": "2.1.0",
     "tslib": "2.8.1"
@@ -85,11 +84,13 @@
     "js-beautify": "1.15.4",
     "mocha": "11.7.4",
     "nyc": "17.1.0",
+    "parse5": "^8.0.0",
     "pjson": "1.0.9",
     "prettier": "3.6.2",
     "rimraf": "6.0.1",
     "sinon": "19.0.2",
     "source-map-resolve": "0.6.0",
+    "source-map-support": "0.5.21",
     "terser": "5.44.0",
     "threads": "1.7.0",
     "ts-loader": "9.5.4",
@@ -131,7 +132,10 @@
   "author": {
     "name": "Timofei Kachalov"
   },
-  "contributors": ["Timofei Kachalov (https://github.com/sanex3339)", "Dmitry Zamotkin (https://github.com/zamotkin)"],
+  "contributors": [
+    "Timofei Kachalov (https://github.com/sanex3339)",
+    "Dmitry Zamotkin (https://github.com/zamotkin)"
+  ],
   "license": "BSD-2-Clause",
   "packageManager": "yarn@1.22.21+sha512.ca75da26c00327d26267ce33536e5790f18ebd53266796fbb664d2a4a5116308042dd8ee7003b276a20eace7d3c5561c3577bdd71bcb67071187af124779620a"
 }
diff --git a/webpack/utils/WebpackUtils.js b/webpack/utils/WebpackUtils.js
index 811923509..fe5a52f93 100644
--- a/webpack/utils/WebpackUtils.js
+++ b/webpack/utils/WebpackUtils.js
@@ -1,7 +1,6 @@
 const fs = require('fs');
 
 const copyright = 'Copyright (C) 2016-2026 Timofei Kachalov <support@obfuscator.io>';
-const sourceMapSupportRequire = 'require("source-map-support").install();';
 
 class WebpackUtils {
     /**
@@ -21,9 +20,6 @@ class WebpackUtils {
             fs.readFileSync('./LICENSE.BSD', 'utf8') + "\n*/";
     }
 
-    static getSourceMapSupportImport () {
-        return sourceMapSupportRequire;
-    }
 }
 
 module.exports.WebpackUtils = WebpackUtils;
diff --git a/webpack/webpack.node.config.js b/webpack/webpack.node.config.js
index 3da2d2da5..1ba5b32ad 100644
--- a/webpack/webpack.node.config.js
+++ b/webpack/webpack.node.config.js
@@ -48,8 +48,7 @@ module.exports = {
         new webpack.BannerPlugin(
             {
                 banner: WebpackUtils.getBannerText(
-                    WebpackUtils.getLicenseText(),
-                    WebpackUtils.getSourceMapSupportImport()
+                    WebpackUtils.getLicenseText()
                 ),
                 raw: true,
                 entryOnly: false
diff --git a/yarn.lock b/yarn.lock
index 5eaf4644a..0d919ff1b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1956,6 +1956,11 @@ enhanced-resolve@^5.17.3:
     graceful-fs "^4.2.4"
     tapable "^2.2.0"
 
+entities@^6.0.0:
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/entities/-/entities-6.0.1.tgz#c28c34a43379ca7f61d074130b2f5f7020a30694"
+  integrity sha512-aN97NXWF6AWBTahfVOIrB/NShkzi5H7F9r1s9mD3cDj4Ko5f2qhhVoYMibXF7GlLveb/D2ioWay8lxI97Ven3g==
+
 env-paths@4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/env-paths/-/env-paths-4.0.0.tgz#d0bb1f84a81d2542581bf7b7e8085d0683b39097"
@@ -4268,6 +4273,13 @@ parse-json@^5.2.0:
     json-parse-even-better-errors "^2.3.0"
     lines-and-columns "^1.1.6"
 
+parse5@^8.0.0:
+  version "8.0.0"
+  resolved "https://registry.yarnpkg.com/parse5/-/parse5-8.0.0.tgz#aceb267f6b15f9b6e6ba9e35bfdd481fc2167b12"
+  integrity sha512-9m4m5GSgXjL4AjumKzq1Fgfp3Z8rsvjRNbnkVwfu2ImRqE5D0LnY2QfDen18FSY9C573YU5XxSapdHZTZ2WolA==
+  dependencies:
+    entities "^6.0.0"
+
 path-exists@^4.0.0:
   version "4.0.0"
   resolved "https://registry.npmjs.org/path-exists/-/path-exists-4.0.0.tgz"