diff --git a/src/utils/body.ts b/src/utils/body.ts
index c4068a1a..581d9d6b 100644
--- a/src/utils/body.ts
+++ b/src/utils/body.ts
@@ -90,6 +90,8 @@ export function readRawBody<E extends Encoding = "utf8">(
       if (_resolved.constructor === Object) {
         return Buffer.from(JSON.stringify(_resolved));
       }
+      // TODO: Handle other BodyInit types
+      // https://developer.mozilla.org/en-US/docs/Web/API/Response/Response#body
       if (_resolved instanceof URLSearchParams) {
         return Buffer.from(_resolved.toString());
       }