diff --git a/iptables.spec b/iptables.spec
index f9c26d4..21532fc 100644
--- a/iptables.spec
+++ b/iptables.spec
@@ -47,6 +47,7 @@ BuildRequires:  pkgconfig(libnftnl) >= 1.0.5
 Requires:       netcfg >= 11.6
 Requires:       xtables-plugins = %version-%release
 Requires(post): update-alternatives
+Requires(postun): update-alternatives
 
 %description
 iptables is used to set up, maintain, and inspect the rule tables of
@@ -56,6 +57,8 @@ the various Netfilter packet filter engines inside the Linux kernel.
 Summary:        Metapackage to make nft the default backend for iptables/arptables/ebtables
 Group:          Productivity/Networking/Security
 Requires:       iptables >= 1.8.0
+Requires(post): update-alternatives
+Requires(postun): update-alternatives
 
 %description backend-nft
 Installation of this package adds higher priority alternatives (cf.