--- a/debian/control	Fri Nov 14 16:35:50 2014 +0100
+++ b/debian/control	Thu Nov 20 14:40:41 2014 +0100
@@ -10,6 +10,7 @@
 Package: verify-drbd
 Architecture: all
 Depends: drbd-utils (>= 8.3.8) | drbd8-utils (>= 8.3.8),  ${misc:Depends}
+Conflicts: drbd-utils (>= 8.4), drbd8-utils (>= 8.4)
 Description: run drbd verification periodically
  This package provides a script which runs a verification on all drbd devices
  of a system using the dynamic resync speed controller and a cron job which