diff --git a/include/webserver_common.hpp b/include/webserver_common.hpp
index fcfd321..1ba091b 100644
--- a/include/webserver_common.hpp
+++ b/include/webserver_common.hpp
@@ -16,6 +16,7 @@
 #pragma once
 
 #include "token_authorization_middleware.hpp"
+#include "security_headers_middleware.hpp"
 #include "webserver_common.hpp"
 
 using CrowApp = crow::App<crow::PersistentData::Middleware,