diff --git a/package.json b/package.json
index f1567b4..dcab6ba 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "coveralls": "^3.0.0",
     "eslint-config-xo-lukechilds": "^1.0.0",
     "nyc": "^11.0.2",
-    "window": "^4.1.0",
+    "window": "^4.2.6",
     "xo": "^0.20.1"
   }
 }