diff --git a/package.json b/package.json
index 896d54f..1b25d40 100644
--- a/package.json
+++ b/package.json
@@ -45,6 +45,7 @@
     "type": "git",
     "url": "https://github.com/mdevils/html-entities.git"
   },
+  "sideEffects": false,
   "main": "./lib/index.js",
   "typings": "./lib/index.d.ts",
   "types": "./lib/index.d.ts",