diff --git a/src/api/comment.rs b/src/api/comment.rs
index b6b3793..fca9fe6 100644
--- a/src/api/comment.rs
+++ b/src/api/comment.rs
@@ -112,11 +112,6 @@ pub async fn get_comment(pid: i32, user: CurrentUser, db: Db, rconn: RdsConn) ->
     }))
 }
 
-#[post("/docomment")]
-pub async fn old_add_comment() -> ApiError {
-    OldApi.into()
-}
-
 #[post("/post/<pid>/comment", data = "<ci>")]
 pub async fn add_comment(
     pid: i32,
diff --git a/src/api/mod.rs b/src/api/mod.rs
index e19ac09..ab53a09 100644
--- a/src/api/mod.rs
+++ b/src/api/mod.rs
@@ -55,6 +55,11 @@ pub fn catch_403_error() -> &'static str {
     "可能被封禁了，等下次重置吧"
 }
 
+#[catch(404)]
+pub fn catch_404_error() -> &'static str {
+    "请更新前端版本"
+}
+
 pub struct CurrentUser {
     pub id: Option<i32>, // tmp user has no id, only for block
     namehash: String,
@@ -136,7 +141,6 @@ pub enum PolicyError {
     InvalidTitle,
     YouAreTmp,
     NoReason,
-    OldApi,
     UnknownPushEndpoint,
 }
 
@@ -167,7 +171,6 @@ impl<'r> Responder<'r, 'static> for ApiError {
                     PolicyError::InvalidTitle => "头衔包含不允许的符号",
                     PolicyError::YouAreTmp => "临时用户只可发布内容和进入单个洞",
                     PolicyError::NoReason => "未填写理由",
-                    PolicyError::OldApi => "请使用最新版前端地址并检查更新",
                     PolicyError::UnknownPushEndpoint => "未知的浏览器推送地址",
                 }
             })
diff --git a/src/api/upload.rs b/src/api/upload.rs
index 7043b56..332efe8 100644
--- a/src/api/upload.rs
+++ b/src/api/upload.rs
@@ -1,14 +1,8 @@
-use super::PolicyError::OldApi;
-use super::{ApiError, CurrentUser, JsonApi};
+use super::{CurrentUser, JsonApi};
 use rocket::fs::TempFile;
 use rocket::serde::json::json;
 use std::env::var;
 
-#[post("/upload")]
-pub async fn ipfs_upload() -> ApiError {
-    OldApi.into()
-}
-
 #[post("/upload", data = "<file>")]
 pub async fn local_upload(_user: CurrentUser, mut file: TempFile<'_>) -> JsonApi {
     let filename: String = format!(
diff --git a/src/main.rs b/src/main.rs
index a31952a..99e1e6d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -67,7 +67,6 @@ async fn main() {
             "/_api/v1",
             routes![
                 api::comment::get_comment,
-                api::comment::old_add_comment,
                 api::post::get_list,
                 api::post::get_one,
                 api::post::publish_post,
@@ -82,7 +81,6 @@ async fn main() {
                 api::operation::block,
                 api::operation::set_auto_block,
                 api::vote::vote,
-                api::upload::ipfs_upload,
                 cors::options_handler,
             ],
         )
@@ -107,7 +105,11 @@ async fn main() {
         )
         .register(
             "/_api",
-            catchers![api::catch_401_error, api::catch_403_error,],
+            catchers![
+                api::catch_401_error,
+                api::catch_403_error,
+                api::catch_404_error
+            ],
         )
         .manage(RandomHasher::get_random_one())
         .manage(rmc)