diff --git a/package.json b/package.json
index ffffe09..748eae8 100644
--- a/package.json
+++ b/package.json
@@ -12,6 +12,7 @@
 		],
 		"./package.json": "./package.json"
 	},
+	"sideEffects": false,
 	"scripts": {
 		"prepack": "npmignore --auto --commentLines=autogenerated",
 		"prepublish": "not-in-publish || npm run prepublishOnly",