diff --git a/config/secrets.yml.example b/config/secrets.yml.example
index fc65136d1..450f0b09f 100644
--- a/config/secrets.yml.example
+++ b/config/secrets.yml.example
@@ -8,6 +8,7 @@ test:
   <<: *default
 
 staging:
+  server_name: ""
   <<: *default
 
 production: &production
@@ -33,6 +34,8 @@ production: &production
   google_oauth2_secret: ""
 
   rollbar_server_token: ""
+  server_name: ""
 
 preproduction:
+  server_name: ""
   <<: *production
\ No newline at end of file