diff --git a/icecream.spec b/icecream.spec
index 3841b73..f9f8636 100644
--- a/icecream.spec
+++ b/icecream.spec
@@ -40,6 +40,7 @@ Requires(pre):    shadow-utils
 Requires(post):   systemd
 Requires(preun):  systemd
 Requires(postun): systemd
+Requires(post):   findutils
 
 %if %{with selinux}
 # For SELinux protection:
@@ -203,6 +204,9 @@ restorecon -R %{_localstatedir}/cache/icecream /run/icecc 2>/dev/null
 
 %firewalld_reload
 %systemd_post iceccd.service icecc-scheduler.service
+
+# Remove files owned by the user 'icecream' (used by older versions).
+find %{_localstatedir}/cache/icecream/ -user icecream -delete 2>/dev/null
 exit 0
 
 %preun