diff --git a/roles/nginx/application/templates/https.conf b/roles/nginx/application/templates/https.conf
index 1b3e7b5..cfb1f8d 100644
--- a/roles/nginx/application/templates/https.conf
+++ b/roles/nginx/application/templates/https.conf
@@ -1,3 +1,3 @@
 include {{ nginx_snippets_directory }}/ssl;
-add_header Strict-Transport-Security 'max-age=15768000; includeSubDomains; preload;'; # default max age: 2592000 = 30 * 24 * 60 * 60s
+add_header Strict-Transport-Security 'max-age=63115200; includeSubDomains; preload';
 add_header 'Referrer-Policy' 'same-origin';