diff --git a/docker/wp-config.php b/docker/wp-config.php
index 35e099c71f69eafe33e164f2df160ec4f721807b..b0f2690ee0846cc13795dfbe5f151cee874992ad 100644
--- a/docker/wp-config.php
+++ b/docker/wp-config.php
@@ -117,7 +117,7 @@ define('COOKIEHASH', '7d12c307721c1cbe9412c639209d72aa');
 
 /* Custom Cache-Control headers for WP-SuperCache.
  * These are set to match our edge nginx caches.
-define('WPSC_CACHE_CONTROL_HEADER', 'max-age=600');
+define('WPSC_CACHE_CONTROL_HEADER', 'max-age=300');
 
 /**#@+
  * Authentication Unique Keys and Salts.