diff --git a/types.d.ts b/types.d.ts
index 7ad9e632e..d4338bff8 100644
--- a/types.d.ts
+++ b/types.d.ts
@@ -49,7 +49,7 @@ declare interface Context<DataType = unknown> extends Record<string, unknown> {
   ): Response;
 }
 
-declare interface Data<DataType = unknown, ContextExtension = {}> {
+declare interface Data<DataType = unknown, ContextExtension = Record<never, never>> {
   cacheTtl?: number;
   any?(request: Request, context: Context & ContextExtension): Promise<Response | void> | Response | void;
   get?(request: Request, context: Context<DataType> & ContextExtension): Promise<Response> | Response;