diff --git a/src/Fetch/Internal/RequestBody.purs b/src/Fetch/Internal/RequestBody.purs
index ab57782..510cd19 100644
--- a/src/Fetch/Internal/RequestBody.purs
+++ b/src/Fetch/Internal/RequestBody.purs
@@ -2,6 +2,7 @@ module Fetch.Internal.RequestBody where
 
 import Data.ArrayBuffer.Types (ArrayBuffer, ArrayView, Uint8Array)
 import JS.Fetch.RequestBody as CoreRequestBody
+import Web.File.Blob (Blob)
 import Web.Streams.ReadableStream (ReadableStream)
 
 class ToRequestBody body where
@@ -13,6 +14,9 @@ instance ToRequestBody ArrayBuffer where
 instance ToRequestBody (ArrayView a) where
   toRequestBody = CoreRequestBody.fromArrayView
 
+instance ToRequestBody Blob where
+  toRequestBody = CoreRequestBody.fromBlob
+
 instance ToRequestBody String where
   toRequestBody = CoreRequestBody.fromString