diff --git a/README.md b/README.md
index 3ec9007..8b3dc0b 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,18 @@
 # Gitea Issues Exporter
 
-Simple application built on [Lumen](https://lumen.laravel.com) to export as csv file closed issues with tracked time on a gitea instance. 
+Simple application built on [Lumen](https://lumen.laravel.com) to export as csv file closed issues with tracked time on a gitea instance.
+
+## .env
+
+Some constants have been added to handle authentication and connection to the Gitea instance APIs.
+
+```
+APP_PASSWORD=
+
+GITEA_ORGANIZATION=
+GITEA_URL=
+GITEA_TOKEN=
+```
 
 ## License