diff --git a/firebase.json b/firebase.json
index 40ccc34..5ea54b3 100644
--- a/firebase.json
+++ b/firebase.json
@@ -16,7 +16,7 @@
       "source": "**",
       "headers": [{
         "key": "Strict-Transport-Security",
-        "value": "max-age=1;includeSubDomains;preload"
+        "value": "max-age=31536000;includeSubDomains;preload"
       }]
     }]
   }