diff --git a/README.md b/README.md
index 3773481..08ea69a 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,8 @@ Following Files are important and have been changed and setup with the script:
 ## Add additional custom configs
 
 To add additional custom environment variables, you can add a file .env.custom and add your variables there.
-This file will not be changed from the setup script and will be used inside all containers to overwrite the existing .env and .env.local
+This file will not be changed from the setup script and will be used inside all containers to overwrite the existing .env and .env.local.
+All environment variables can be found inside the Git Repository: [Open Datenschutzcenter](https://github.com/H2-invent/open-datenschutzcenter/blob/master/.env)
 ```sh
 MAILER_DSN='smtps://<username>:<password>@<smtpHost>:<smtpPort>'
 registerEmailAdress=register@local.local