diff --git a/actions/DisplayAction.php b/actions/DisplayAction.php
index f9ceea1f..607ffbfd 100644
--- a/actions/DisplayAction.php
+++ b/actions/DisplayAction.php
@@ -16,6 +16,10 @@ class DisplayAction implements ActionInterface
 {
     public function execute(array $request)
     {
+        if (Configuration::getConfig('system', 'enable_maintenance_mode')) {
+            return new Response('503 Service Unavailable', 503);
+        }
+
         $bridgeFactory = new BridgeFactory();
 
         $bridgeClassName = $bridgeFactory->createBridgeClassName($request['bridge'] ?? '');
diff --git a/config.default.ini.php b/config.default.ini.php
index 955dc9c0..93ce11f9 100644
--- a/config.default.ini.php
+++ b/config.default.ini.php
@@ -25,6 +25,9 @@ enable_debug_mode = false
 ; debug_mode_whitelist[] = 127.0.0.1
 ; debug_mode_whitelist[] = 192.168.1.10
 
+; Whether to enable maintenance mode. If enabled, feed requests receive 503 Service Unavailable
+enable_maintenance_mode = false
+
 [http]
 timeout = 60
 useragent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0"