diff --git a/package.json b/package.json
index 00bd6bc..60e5689 100644
--- a/package.json
+++ b/package.json
@@ -38,5 +38,8 @@
     "sandboxed-module": "0.1.3",
     "hook.io": "0.8.10",
     "underscore": "1.2.1"
+  },
+  "browser": {
+    "os": false
   }
 }