diff --git a/types/co-body/index.d.ts b/types/co-body/index.d.ts
index 0393db0a94..a2c15152e6 100644
--- a/types/co-body/index.d.ts
+++ b/types/co-body/index.d.ts
@@ -26,6 +26,7 @@ declare namespace CoBody {
         strict?: boolean;
         queryString?: qs.IParseOptions;
         jsonTypes?: string[];
+        returnRawBody?: boolean;
         formTypes?: string[];
         textTypes?: string[];
         encoding?: string;