diff --git a/README.md b/README.md
index bbb783c..937981d 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,8 @@ RESTIC_REPOSITORY
 RESTIC_PASSWORD
 ```
 
+Backend specific env vars : https://restic.readthedocs.io/en/stable/040_backup.html#environment-variables
+
 Example compose setup:
 
 ```yaml