diff --git a/src/index.ts b/src/index.ts
index f2884a8..0985ccd 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -133,7 +133,7 @@ export default class Flummpress {
       return res.writeHead(code);
     };
 
-    res.json = (body: JSON, code = 200) => {
+    res.json = (body: any, code = 200) => {
       res.reply({ code, type: "application/json", body: JSON.stringify(body) });
     };