diff --git a/package.json b/package.json
index 090b03eac..15533143f 100644
--- a/package.json
+++ b/package.json
@@ -65,6 +65,7 @@
     "apps:rn:android": "yarn apps:rn:emulator & cd apps/rn && yarn add ./../.. --force && react-native run-android",
     "apps:rn:emulator": "emulator -avd \"$(emulator -list-avds | head -n 1)\" & bash -c 'sleep 5 && adb reverse tcp:8080 tcp:8080 && adb reverse tcp:8081 tcp:8081'"
   },
+  "sideEffects": false,
   "main": "cjs/index.js",
   "module": "es/index.js",
   "unpkg": "dist/pdf-lib.min.js",