diff --git a/package.json b/package.json
index b82ff1e4..2f1334d1 100644
--- a/package.json
+++ b/package.json
@@ -4,6 +4,7 @@
   "author": "Gert Hengeveld <info@ghengeveld.nl>",
   "license": "ISC",
   "homepage": "https://async-library.com",
+  "browserslist": "last 2 Firefox versions",
   "repository": "git+https://github.com/async-library/react-async.git",
   "workspaces": [
     "examples/*",