diff --git a/.env.example b/.env.example
index 097e309..6d5a0de 100644
--- a/.env.example
+++ b/.env.example
@@ -3,4 +3,5 @@ DB_HOST=mariadb
 DB_USER=mapguesser
 DB_PASSWORD=mapguesser
 DB_NAME=mapguesser
+GOOGLE_MAPS_SERVER_API_KEY=your_google_maps_server_api_key
 GOOGLE_MAPS_JS_API_KEY=your_google_maps_js_api_key