diff --git a/readthedocs/api/utils.py b/readthedocs/api/utils.py
index 7d0ca23ff..1daa2deb9 100644
--- a/readthedocs/api/utils.py
+++ b/readthedocs/api/utils.py
@@ -52,7 +52,7 @@ class EnhancedModelResource(ModelResource):
 class OwnerAuthorization(Authorization):
     def apply_limits(self, request, object_list):
         if request and hasattr(request, 'user') and request.method != 'GET':
-            if request.user.is_authenticated():
+            if request.user.is_authenticated:
                 object_list = object_list.filter(users__in=[request.user])
             else:
                 object_list = object_list.none()
diff --git a/readthedocs/builds/querysets.py b/readthedocs/builds/querysets.py
index 9a3482694..34408b9d9 100644
--- a/readthedocs/builds/querysets.py
+++ b/readthedocs/builds/querysets.py
@@ -21,7 +21,7 @@ class VersionQuerySetBase(models.QuerySet):
     def _add_user_repos(self, queryset, user):
         if user.has_perm('builds.view_version'):
             return self.all().distinct()
-        if user.is_authenticated():
+        if user.is_authenticated:
             user_queryset = get_objects_for_user(user, 'builds.view_version')
             queryset = user_queryset | queryset
         return queryset.distinct()
@@ -84,7 +84,7 @@ class BuildQuerySetBase(models.QuerySet):
     def _add_user_repos(self, queryset, user=None):
         if user.has_perm('builds.view_version'):
             return self.all().distinct()
-        if user.is_authenticated():
+        if user.is_authenticated:
             user_queryset = get_objects_for_user(user, 'builds.view_version')
             pks = user_queryset.values_list('pk', flat=True)
             queryset = self.filter(version__pk__in=pks) | queryset
@@ -116,7 +116,7 @@ class RelatedBuildQuerySetBase(models.QuerySet):
     def _add_user_repos(self, queryset, user=None):
         if user.has_perm('builds.view_version'):
             return self.all().distinct()
-        if user.is_authenticated():
+        if user.is_authenticated:
             user_queryset = get_objects_for_user(user, 'builds.view_version')
             pks = user_queryset.values_list('pk', flat=True)
             queryset = self.filter(
diff --git a/readthedocs/core/utils/tasks/permission_checks.py b/readthedocs/core/utils/tasks/permission_checks.py
index ce2a2dffd..1643e8660 100644
--- a/readthedocs/core/utils/tasks/permission_checks.py
+++ b/readthedocs/core/utils/tasks/permission_checks.py
@@ -5,7 +5,7 @@ __all__ = ('user_id_matches',)
 
 def user_id_matches(request, state, context):  # pylint: disable=unused-argument
     user_id = context.get('user_id', None)
-    if user_id is not None and request.user.is_authenticated():
+    if user_id is not None and request.user.is_authenticated:
         if request.user.id == user_id:
             return True
     return False
diff --git a/readthedocs/notifications/storages.py b/readthedocs/notifications/storages.py
index 812b1175c..1755db952 100644
--- a/readthedocs/notifications/storages.py
+++ b/readthedocs/notifications/storages.py
@@ -68,7 +68,7 @@ class FallbackUniqueStorage(FallbackStorage):
 
     def add(self, level, message, extra_tags='', *args, **kwargs):  # noqa
         user = kwargs.get('user') or self.request.user
-        if not user.is_anonymous():
+        if not user.is_anonymous:
             persist_messages = (PersistentMessage.objects
                                 .filter(message=message,
                                         user=user,
@@ -136,7 +136,7 @@ class NonPersistentStorage(PersistentStorage):
         user = kwargs.get("user") or self.get_user()
 
         try:
-            anonymous = user.is_anonymous()
+            anonymous = user.is_anonymous
         except TypeError:
             anonymous = user.is_anonymous
         if anonymous:
diff --git a/readthedocs/oauth/querysets.py b/readthedocs/oauth/querysets.py
index f916889d4..d01703eb1 100644
--- a/readthedocs/oauth/querysets.py
+++ b/readthedocs/oauth/querysets.py
@@ -13,7 +13,7 @@ class RelatedUserQuerySetBase(models.QuerySet):
 
     def api(self, user=None):
         """Return objects for user"""
-        if not user.is_authenticated():
+        if not user.is_authenticated:
             return self.none()
         return self.filter(users=user)
 
diff --git a/readthedocs/projects/querysets.py b/readthedocs/projects/querysets.py
index 3eabcf5b2..ababa7641 100644
--- a/readthedocs/projects/querysets.py
+++ b/readthedocs/projects/querysets.py
@@ -19,7 +19,7 @@ class ProjectQuerySetBase(models.QuerySet):
     def _add_user_repos(self, queryset, user):
         if user.has_perm('projects.view_project'):
             return self.all().distinct()
-        if user.is_authenticated():
+        if user.is_authenticated:
             user_queryset = get_objects_for_user(user, 'projects.view_project')
             queryset = user_queryset | queryset
         return queryset.distinct()
@@ -32,7 +32,7 @@ class ProjectQuerySetBase(models.QuerySet):
         return queryset
 
     def for_admin_user(self, user):
-        if user.is_authenticated():
+        if user.is_authenticated:
             return self.filter(users__in=[user])
         return self.none()
 
@@ -83,7 +83,7 @@ class RelatedProjectQuerySetBase(models.QuerySet):
         # Hack around get_objects_for_user not supporting global perms
         if user.has_perm('projects.view_project'):
             return self.all().distinct()
-        if user.is_authenticated():
+        if user.is_authenticated:
             # Add in possible user-specific views
             project_qs = get_objects_for_user(user, 'projects.view_project')
             pks = project_qs.values_list('pk', flat=True)
diff --git a/readthedocs/projects/views/public.py b/readthedocs/projects/views/public.py
index e5a3e2bf5..62f3ca3d4 100644
--- a/readthedocs/projects/views/public.py
+++ b/readthedocs/projects/views/public.py
@@ -221,7 +221,7 @@ def elastic_project_search(request, project_slug):
     query = request.GET.get('q', None)
     if query:
         user = ''
-        if request.user.is_authenticated():
+        if request.user.is_authenticated:
             user = request.user
         log.info(
             LOG_TEMPLATE.format(
diff --git a/readthedocs/restapi/serializers.py b/readthedocs/restapi/serializers.py
index 1f7607c04..cc16a0ac9 100644
--- a/readthedocs/restapi/serializers.py
+++ b/readthedocs/restapi/serializers.py
@@ -169,7 +169,7 @@ class RemoteRepositorySerializer(serializers.ModelSerializer):
 
     def get_matches(self, obj):
         request = self.context['request']
-        if request.user is not None and request.user.is_authenticated():
+        if request.user is not None and request.user.is_authenticated:
             return obj.matches(request.user)
 
 
diff --git a/readthedocs/restapi/views/integrations.py b/readthedocs/restapi/views/integrations.py
index 60bb4e9a9..3e44530d3 100644
--- a/readthedocs/restapi/views/integrations.py
+++ b/readthedocs/restapi/views/integrations.py
@@ -374,7 +374,7 @@ class APIWebhookView(WebhookMixin, APIView):
         the integration token to be specified as a POST argument.
         """
         # If the user is not an admin of the project, fall back to token auth
-        if self.request.user.is_authenticated():
+        if self.request.user.is_authenticated:
             try:
                 return (Project.objects
                         .for_admin_user(self.request.user)
diff --git a/readthedocs/search/views.py b/readthedocs/search/views.py
index 7d3a51d5f..bac1969e8 100644
--- a/readthedocs/search/views.py
+++ b/readthedocs/search/views.py
@@ -72,7 +72,7 @@ def elastic_search(request):
 
     if user_input.query:
         user = ''
-        if request.user.is_authenticated():
+        if request.user.is_authenticated:
             user = request.user
         log.info(
             LOG_TEMPLATE.format(