diff --git a/readme.md b/readme.md
index 2d9139c..6a80f48 100644
--- a/readme.md
+++ b/readme.md
@@ -39,6 +39,7 @@ from various CA, CI, OCI / OS.
 | CD_DNS        | Space separated servers |
 | CD_URL_ALMA   | Alma repository URL     |
 | CD_URL_ALPINE | Alpine repository URL   |
+| CD_URL_ARCH   | Arch repository URL     |
 | CD_URL_DEBIAN | Debian repository URL   |
 | CD_URL_ROCKY  | Rocky repository URL    |
 | CD_URL_UBUNTU | Ubuntu repository URL   |