diff --git a/vars/debian-10.yml b/vars/debian-10.yml
index 9780612da..3dc80fa27 100644
--- a/vars/debian-10.yml
+++ b/vars/debian-10.yml
@@ -25,6 +25,3 @@ sshd_service: ssh
 php_version: 7.3
 postgresql_version: 11
 systemd_location: /lib/systemd/system
-# Upgrade OS's own Calibre to very latest:
-calibre_via_debs: False
-calibre_via_python: True