diff --git a/overlay/etc/nginx/sites-available/generic.conf.d/root/20_cache.conf b/overlay/etc/nginx/sites-available/generic.conf.d/root/20_cache.conf
index 294a6a4..091a45f 100644
--- a/overlay/etc/nginx/sites-available/generic.conf.d/root/20_cache.conf
+++ b/overlay/etc/nginx/sites-available/generic.conf.d/root/20_cache.conf
@@ -11,6 +11,7 @@
     # getting the file multiple times.
     proxy_cache_lock on;
     proxy_cache_lock_timeout 1h;
+    proxy_cache_lock_age 1h;
 
     # Allow the use of state entries
     proxy_cache_use_stale error timeout invalid_header updating http_500 http_502 http_503 http_504;