diff --git a/src/core/index.ts b/src/core/index.ts
index d7bf7f968..582d12e0a 100644
--- a/src/core/index.ts
+++ b/src/core/index.ts
@@ -27,6 +27,7 @@ export type {
   RequestHandlerOptions,
   DefaultBodyType,
   DefaultRequestMultipartBody,
+  JsonBodyType,
 } from './handlers/RequestHandler'
 
 export type {