diff --git a/stretch/preferences.d/entrouvert-debian-backports b/stretch/preferences.d/entrouvert-debian-backports
index 0fd6d2e..47b5777 100644
--- a/stretch/preferences.d/entrouvert-debian-backports
+++ b/stretch/preferences.d/entrouvert-debian-backports
@@ -1,3 +1,11 @@
+Package: python-django
+Pin: release a=stretch-backports
+Pin-Priority: 900
+
+#
+# certbot packages
+#
+
 Package: certbot
 Pin: release a=stretch-backports
 Pin-Priority: 900
@@ -98,6 +106,10 @@ Package: python3-certbot-dns-rfc2136
 Pin: release a=stretch-backports
 Pin-Priority: 900
 
+#
+# prometheus packages
+#
+
 Package: prometheus*
 Pin: release a=stretch-backports
 Pin-Priority: 900