diff --git a/package.json b/package.json
index 19f1b3c..5a13365 100644
--- a/package.json
+++ b/package.json
@@ -9,6 +9,7 @@
 	"license": "MIT",
 	"main": "index.js",
 	"types": "./index.d.ts",
+	"sideEffects": false,
 	"scripts": {
 		"prepack": "npmignore --auto --commentLines=autogenerated",
 		"prepublishOnly": "safe-publish-latest",