diff --git a/package.json b/package.json
index 5565dd4..4073e6e 100644
--- a/package.json
+++ b/package.json
@@ -28,6 +28,7 @@
   },
   "react-native": "./dist/browser/index.cjs",
   "types": "dist/index.d.ts",
+  "sideEffects": false,
   "scripts": {
     "bench": "npm run build && node test/benchmark.js",
     "build": "run-s clean build:node:cjs build:node:esm build:browser:cjs build:browser:esm build:types",