diff --git a/package.json b/package.json
index b1e3c11a..bf0648e2 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,9 @@
     "version": "5.3.1",
     "description": "tap-producing test harness for node and browsers",
     "main": "index.js",
+    "browser": {
+        "fs": false
+    },
     "exports": {
         ".": [
             {