diff --git a/certbot_dns_ionos/dns_ionos.py b/certbot_dns_ionos/dns_ionos.py
index 8b09b22..697bb68 100644
--- a/certbot_dns_ionos/dns_ionos.py
+++ b/certbot_dns_ionos/dns_ionos.py
@@ -1,20 +1,15 @@
 """DNS Authenticator for IONOS."""
 import json
 import logging
-import time
 
 import requests
-import zope.interface
 
 from certbot import errors
-from certbot import interfaces
 from certbot.plugins import dns_common
 
 logger = logging.getLogger(__name__)
 
 
-@zope.interface.implementer(interfaces.IAuthenticator)
-@zope.interface.provider(interfaces.IPluginFactory)
 class Authenticator(dns_common.DNSAuthenticator):
     """DNS Authenticator for IONOS