diff --git a/packages/apidom-ast/package.json b/packages/apidom-ast/package.json
index 4a60b5f11c..49a2dd1bd3 100644
--- a/packages/apidom-ast/package.json
+++ b/packages/apidom-ast/package.json
@@ -6,6 +6,7 @@
     "registry": "https://npm.pkg.github.com"
   },
   "type": "module",
+  "sideEffects": false,
   "unpkg": "./dist/apidom.ast.min.js",
   "main": "./cjs/index.cjs",
   "exports": {