diff --git a/ansible/roles/gitea/files/app.ini b/ansible/roles/gitea/files/app.ini
index fef8471..23e9f63 100644
--- a/ansible/roles/gitea/files/app.ini
+++ b/ansible/roles/gitea/files/app.ini
@@ -64,7 +64,7 @@ REPO_PAGING_NUM = 100
 [ui]
 SITEMAP_PAGING_NUM   = 100
 FEED_PAGING_NUM      = 100
-DEFAULT_THEME        = gitea
+DEFAULT_THEME        = gitea-auto
 ISSUE_PAGING_NUM     = 100
 THEME_COLOR_META_TAG = "#ff7f00"
 FEED_MAX_COMMIT_NUM  = 30