diff --git a/env.sample.php b/env.sample.php
index 541337e..ad3b64e 100644
--- a/env.sample.php
+++ b/env.sample.php
@@ -40,6 +40,7 @@ $SETTINGS = [
     "weather_summary_hours" => 8,
 
     "mapquest_key" => "",
+    "mapbox_key" => "",
 
     // MaxMind GeoIP2 database
     "geoip_database" => __DIR__ . "/resources/net.geoip/GeoLite2-City.mmdb",