diff --git a/roles/nginx/templates/https.j2 b/roles/nginx/templates/https.j2
index 21739ab..705fac7 100644
--- a/roles/nginx/templates/https.j2
+++ b/roles/nginx/templates/https.j2
@@ -32,5 +32,6 @@
     spdy_headers_comp 6;
 
     # Enable this if you want HSTS (recommended, but be careful)
-    add_header Strict-Transport-Security max-age=15768000 always;
-
+    # Include all subdomains and indicate to Google that we want this pre-loaded in Chrome's HSTS store
+    # See: https://hstspreload.appspot.com/
+    add_header Strict-Transport-Security "max-age=15768000; includeSubDomains; preload;" always;