diff --git a/types/index.d.ts b/types/index.d.ts
index c03f4d0..a081ee5 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -56,7 +56,7 @@ type HonokaDataType =
 
 export interface HonokaRequestOptions {
   method?: string;
-  headers?: HonokaHeaders;
+  headers?: any;
   data?: any;
   dataType?: HonokaDataType;
   body?: any;