diff --git a/package.json b/package.json
index f9e9e05..692f58b 100644
--- a/package.json
+++ b/package.json
@@ -4,6 +4,7 @@
   "description": "String#replace for React components",
   "license": "MIT",
   "main": "index.js",
+  "sideEffects": false,
   "repository": "iansinnott/react-string-replace",
   "author": {
     "name": "Ian Sinnott",
@@ -41,4 +42,4 @@
     "eslint-plugin-flowtype": "^2.25.0",
     "eslint-plugin-react": "^7.0.0"
   }
-}
+}
\ No newline at end of file