diff --git a/conman.changes b/conman.changes
index 0d4d759..151f85d 100644
--- a/conman.changes
+++ b/conman.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Sat Sep 22 13:30:56 UTC 2018 - eich@suse.com
+
+- Add Requires(post): %fillup_prereq sed.
+
 -------------------------------------------------------------------
 Thu Aug 23 10:01:18 UTC 2018 - eich@suse.com
 
diff --git a/conman.spec b/conman.spec
index 90c7633..f9703d0 100644
--- a/conman.spec
+++ b/conman.spec
@@ -66,6 +66,8 @@ BuildRequires:  systemd
 BuildRequires:  systemd-rpm-macros
 %{?systemd_requires}
 Requires(pre):  shadow
+Requires(post): %fillup_prereq sed
+Requires(postun): coreutils
 %endif
 
 Patch1:         conman-suse-fix-expect-scripts.patch