diff --git a/pmb/config/__init__.py b/pmb/config/__init__.py
index 38a0cab5..84eb6c9e 100644
--- a/pmb/config/__init__.py
+++ b/pmb/config/__init__.py
@@ -60,6 +60,7 @@ config_keys = ["aports",
                "kernel",
                "keymap",
                "locale",
+               "mirror_alpine",
                "mirrors_postmarketos",
                "nonfree_firmware",
                "nonfree_userland",