diff --git a/debian/control b/debian/control
index c2d818a851bfa70ad874437a7c656a990d611872..afd67cafa1db1d6c99281d78e79e1fd8e0db9b00 100644
--- a/debian/control
+++ b/debian/control
@@ -20,6 +20,7 @@ Vcs-Git: https://salsa.debian.org/python-team/packages/dkimpy-milter.git
 Package: dkimpy-arc-milter
 Architecture: all
 Pre-Depends: ${misc:Pre-Depends}
+Conflicts: dkimpy-milter
 Depends: adduser,
          python3-authres,
          python3-dkim (>= 1.1),