diff --git a/src/main/java/org/ntlab/citrusserver/resources/TodoRest.java b/src/main/java/org/ntlab/citrusserver/resources/TodoRest.java
index 346f320..800f9e6 100644
--- a/src/main/java/org/ntlab/citrusserver/resources/TodoRest.java
+++ b/src/main/java/org/ntlab/citrusserver/resources/TodoRest.java
@@ -69,6 +69,7 @@
     @POST
     @Path("/{account_id}/books/{book_id}/todos/{year}/{month}/{day}")
     @Consumes(MediaType.APPLICATION_FORM_URLENCODED)
+    @Produces(MediaType.APPLICATION_JSON)
     public Todo createTodo(@PathParam("account_id") String account_id, @PathParam("book_id") Integer book_id, @PathParam("year") Integer year, @PathParam("month") Integer month, @PathParam("day") Integer day, @FormParam("title") String title,@FormParam("token") String token) {
         return todoManager.createTodo(account_id, book_id, year, month, day, title,token);
     }