diff --git a/README.md b/README.md
index 28297c1..8a9a680 100644
--- a/README.md
+++ b/README.md
@@ -73,6 +73,7 @@ dovecot pam.d postfix procmailrc skel systemd opendkim
 15. Create a TXT DNS record for the host `REPLACEME.TLD` containing `v=spf1 mx -all` (`REPLACEME.TLD` can usually be left out of the input field)
 16. Create a TXT DNS record for the host `_dmarc.REPLACEME.TLD` containing `v=DMARC1; p=none` (`REPLACEME.TLD` can usually be left out of the input field)
 17. Set the reverse DNS record for the VPS to the hostname
+18. Add `postfix.service` and `dovecot.service` to the `ExecStartPost` service reload in `/etc/systemd/system/certbot-renewal.service` and run `systemctl daemon-reload`
 
 ### Add Accounts