diff --git a/certbot/certbot/_internal/cli/helpful.py b/certbot/certbot/_internal/cli/helpful.py
index c83bdc1f5..186a0c574 100644
--- a/certbot/certbot/_internal/cli/helpful.py
+++ b/certbot/certbot/_internal/cli/helpful.py
@@ -470,7 +470,7 @@ class HelpfulArgumentParser(object):
         may or may not be displayed as help topics.
 
         """
-        for name, plugin_ep in six.iteritems(plugins):
+        for name, plugin_ep in plugins.items():
             parser_or_group = self.add_group(name,
                                              description=plugin_ep.long_description)
             plugin_ep.plugin_cls.inject_parser_options(parser_or_group, name)
diff --git a/certbot/certbot/_internal/plugins/disco.py b/certbot/certbot/_internal/plugins/disco.py
index bed22b4ae..c7e8d2021 100644
--- a/certbot/certbot/_internal/plugins/disco.py
+++ b/certbot/certbot/_internal/plugins/disco.py
@@ -215,7 +215,7 @@ class PluginsRegistry(Mapping):
         # This prevents deadlock caused by plugins acquiring a lock
         # and ensures at least one concurrent Certbot instance will run
         # successfully.
-        self._plugins = collections.OrderedDict(sorted(six.iteritems(plugins)))
+        self._plugins = collections.OrderedDict(sorted(plugins.items()))
 
     @classmethod
     def find_all(cls):
@@ -281,7 +281,7 @@ class PluginsRegistry(Mapping):
     def filter(self, pred):
         """Filter plugins based on predicate."""
         return type(self)({name: plugin_ep for name, plugin_ep
-                               in six.iteritems(self._plugins) if pred(plugin_ep)})
+                               in self._plugins.items() if pred(plugin_ep)})
 
     def visible(self):
         """Filter plugins based on visibility."""
diff --git a/certbot/certbot/_internal/plugins/standalone.py b/certbot/certbot/_internal/plugins/standalone.py
index bbb56178c..ee02edc30 100644
--- a/certbot/certbot/_internal/plugins/standalone.py
+++ b/certbot/certbot/_internal/plugins/standalone.py
@@ -183,7 +183,7 @@ class Authenticator(common.Plugin):
             for achall in achalls:
                 if achall in server_achalls:
                     server_achalls.remove(achall)
-        for port, servers in six.iteritems(self.servers.running()):
+        for port, servers in self.servers.running().items():
             if not self.served[servers]:
                 self.servers.stop(port)
 
diff --git a/certbot/certbot/_internal/plugins/webroot.py b/certbot/certbot/_internal/plugins/webroot.py
index 88e02998d..16938b305 100644
--- a/certbot/certbot/_internal/plugins/webroot.py
+++ b/certbot/certbot/_internal/plugins/webroot.py
@@ -242,7 +242,7 @@ class _WebrootMapAction(argparse.Action):
     """Action class for parsing webroot_map."""
 
     def __call__(self, parser, namespace, webroot_map, option_string=None):
-        for domains, webroot_path in six.iteritems(json.loads(webroot_map)):
+        for domains, webroot_path in json.loads(webroot_map).items():
             webroot_path = _validate_webroot(webroot_path)
             namespace.webroot_map.update(
                 (d, webroot_path) for d in cli.add_domains(namespace, domains))
diff --git a/certbot/certbot/_internal/renewal.py b/certbot/certbot/_internal/renewal.py
index 661af7948..160472527 100644
--- a/certbot/certbot/_internal/renewal.py
+++ b/certbot/certbot/_internal/renewal.py
@@ -155,7 +155,7 @@ def _restore_plugin_configs(config, renewalparams):
 
     for plugin_prefix in set(plugin_prefixes):
         plugin_prefix = plugin_prefix.replace('-', '_')
-        for config_item, config_value in six.iteritems(renewalparams):
+        for config_item, config_value in renewalparams.items():
             if config_item.startswith(plugin_prefix + "_") and not cli.set_by_cli(config_item):
                 # Values None, True, and False need to be treated specially,
                 # As their types aren't handled correctly by configobj
diff --git a/certbot/certbot/_internal/storage.py b/certbot/certbot/_internal/storage.py
index ff58313e5..3d223f89f 100644
--- a/certbot/certbot/_internal/storage.py
+++ b/certbot/certbot/_internal/storage.py
@@ -275,7 +275,7 @@ def relevant_values(all_values):
 
     rv = dict(
         (option, value)
-        for option, value in six.iteritems(all_values)
+        for option, value in all_values.items()
         if _relevant(namespaces, option) and cli.option_was_set(option, value))
     # We always save the server value to help with forward compatibility
     # and behavioral consistency when versions of Certbot with different
diff --git a/certbot/tests/plugins/disco_test.py b/certbot/tests/plugins/disco_test.py
index ed13544de..efdb85a4e 100644
--- a/certbot/tests/plugins/disco_test.py
+++ b/certbot/tests/plugins/disco_test.py
@@ -56,7 +56,7 @@ class PluginEntryPointTest(unittest.TestCase):
             EP_SA: "sa",
         }
 
-        for entry_point, name in six.iteritems(names):
+        for entry_point, name in names.items():
             self.assertEqual(
                 name, PluginEntryPoint.entry_point_to_plugin_name(entry_point, with_prefix=False))
 
@@ -70,7 +70,7 @@ class PluginEntryPointTest(unittest.TestCase):
             self.ep3: "p3:ep3",
         }
 
-        for entry_point, name in six.iteritems(names):
+        for entry_point, name in names.items():
             self.assertEqual(
                 name, PluginEntryPoint.entry_point_to_plugin_name(entry_point, with_prefix=True))