diff --git a/package.json b/package.json
index f2aae88..bb92651 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "config": "^1.24.0",
     "corser": "^2.0.1",
     "express": "^4.14.0",
-    "fetch-ponyfill": "^4.0.0",
+    "fetch-ponyfill": "^5.0.0",
     "hsts": "^2.0.0",
     "leveldown": "^1.5.0",
     "levelup": "^1.3.3",