diff --git a/package.json b/package.json
index 175eb7c..209ea03 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
   },
   "homepage": "https://github.com/jimmywarting/FormData#readme",
   "dependencies": {
-    "fetch-blob": "^3.2.0"
+    "fetch-blob": "^4.0.0"
   },
   "devDependencies": {
     "@types/google-closure-compiler": "^0.0.22",