diff --git a/static/_headers b/static/_headers
index af8b18a..ce308eb 100644
--- a/static/_headers
+++ b/static/_headers
@@ -2,6 +2,7 @@
   X-Content-Type-Options: nosniff
   X-XSS-Protection: 1; mode=block
   X-Frame-Options: DENY
+  Strict-Transport-Security: max-age=63072000; includeSubDomains; preload
 
 /*.jpg
   Cache-Control: max-age=8035200