diff --git a/server/.env.example b/server/.env.example
index 47ad25f1..7bb5a096 100644
--- a/server/.env.example
+++ b/server/.env.example
@@ -45,6 +45,10 @@ DEMO_MODE=false # Demo mode - resets data hourly
 
 # UNSPLASH_ACCESS_KEY= # Optional Unsplash Access Key for trip-cover and place-image search. Without one, TREK uses Unsplash's unauthenticated endpoint, which some datacenter/VPS IPs get blocked from (#1449). Get a free key at unsplash.com/developers. Overrides any key set per-admin in Admin > Settings. Can also be configured there instead of here.
 
+# AMAP_WEB_SERVICE_KEY= # Required. Amap (Gaode Maps) Web Service API key for maps, places, routing, and transit services. Get one at https://console.amap.com/dev/
+
+# OVERPASS_URL= # Deprecated — maps service uses Amap instead. Ignored when AMAP_WEB_SERVICE_KEY is set.
+
 # Initial admin account — ONLY applied on the first boot, when the database has no
 # users yet. Adding these later has no effect (the server logs a reminder if you do);
 # to change an existing password sign in and use Settings, or reset the admin account.