diff --git a/.env.example b/.env.example
index 107e27b0a1..9e81085dfb 100644
--- a/.env.example
+++ b/.env.example
@@ -35,6 +35,7 @@ REQUIRE_HTTPS=false
 GOOGLE_MAPS_API_KEY=
 ERROR_EMAIL=
 TRUSTED_PROXIES=
+SCOUT_DRIVER=null
 
 NINJA_ENVIRONMENT=selfhost