diff --git a/app/routers/admin.py b/app/routers/admin.py
index 0b57f7e..4b8d9fa 100644
--- a/app/routers/admin.py
+++ b/app/routers/admin.py
@@ -121,6 +121,11 @@ async def delete_user(user_id: int, _admin=Depends(admin_required)):
         conn.execute("DELETE FROM user_oauth_tokens WHERE user_id=?", (user_id,))
         conn.execute("DELETE FROM user_tokens WHERE gitea_user_id=?", (user_id,))
         conn.execute("DELETE FROM workspace_members WHERE user_id=?", (user_id,))
+        conn.execute("DELETE FROM comments WHERE user_id=?", (user_id,))
+        conn.execute("DELETE FROM page_history WHERE user_id=?", (user_id,))
+        conn.execute("DELETE FROM favorites WHERE user_id=?", (user_id,))
+        conn.execute("DELETE FROM gitea_private_pages WHERE user_id=?", (user_id,))
+        conn.execute("DELETE FROM tags WHERE user_id=?", (user_id,))
         # Delete workspaces owned by this user
         ws_rows = conn.execute("SELECT id FROM workspaces WHERE owner_id=?", (user_id,)).fetchall()
         for ws in ws_rows: