diff --git a/README.md b/README.md
index df51b0f..dc52082 100644
--- a/README.md
+++ b/README.md
@@ -42,11 +42,11 @@
 
 - `LOG_LEVEL` (DEBUG, INFO, WARNING, ERROR, CRITICAL)
 
-- Database credentials: `MYSQL_HOST`, `MYSQL_USER`, `MYSQL_PASSWORD`, `MYSQL_DATABASE`
+- Database credentials: `db_host`, `db_username`, `db_password`, `db_database`
 
-- `API_KEY_INTERNAL`
+- `api_key`
 
-- `BACKEND_API_URL`
+- `backend_api_url`
 
 
 ## Metrics