diff --git a/backend/src/main.rs b/backend/src/main.rs
index 20bd518..7eb5b3a 100644
--- a/backend/src/main.rs
+++ b/backend/src/main.rs
@@ -80,6 +80,7 @@ fn redirect<T: Service>(
                                 LOCATION,
                                 T::redirect_url(&data.user, &data.repo, &head, &data.file).as_str(),
                             )
+                            .set(CacheControl(vec![CacheDirective::Private]))
                             .finish()
                     }));
                 }
diff --git a/backend/src/service.rs b/backend/src/service.rs
index 4f1e924..82a57da 100644
--- a/backend/src/service.rs
+++ b/backend/src/service.rs
@@ -4,7 +4,10 @@ use crate::{
     statics::{load_env_var, GITHUB_AUTH_QUERY, OPT},
 };
 use actix_web::{
-    http::{header::LOCATION, StatusCode},
+    http::{
+        header::{CacheControl, CacheDirective, LOCATION},
+        StatusCode,
+    },
     web, Error, HttpResponse,
 };
 use awc::{error::PayloadError, Client, ClientResponse};
@@ -268,6 +271,7 @@ impl Service for GitLab {
                                                     )
                                                     .as_str(),
                                                 )
+                                                .set(CacheControl(vec![CacheDirective::Private]))
                                                 .finish()
                                         })
                                         .from_err(),