diff --git a/code_annotations/base.py b/code_annotations/base.py
index e3d4970..8ca88b2 100644
--- a/code_annotations/base.py
+++ b/code_annotations/base.py
@@ -8,7 +8,6 @@
 import re
 from abc import ABCMeta, abstractmethod
 
-import six
 import yaml
 from stevedore import named
 
@@ -282,8 +281,7 @@ def _configure_extensions(self):
             ))
 
 
-@six.add_metaclass(ABCMeta)
-class BaseSearch(object):
+class BaseSearch(object, metaclass=ABCMeta):
     """
     Base class for searchers.
     """
diff --git a/code_annotations/extensions/base.py b/code_annotations/extensions/base.py
index 9e46d91..6dcb470 100644
--- a/code_annotations/extensions/base.py
+++ b/code_annotations/extensions/base.py
@@ -4,13 +4,10 @@
 import re
 from abc import ABCMeta, abstractmethod
 
-import six
-
 from code_annotations.helpers import clean_abs_path, get_annotation_regex
 
 
-@six.add_metaclass(ABCMeta)
-class AnnotationExtension(object):
+class AnnotationExtension(object, metaclass=ABCMeta):
     """
     Abstract base class that annotation extensions will inherit from.
     """
@@ -36,8 +33,7 @@ def search(self, file_handle):  # pragma: no cover
         raise NotImplementedError('search called on base class!')
 
 
-@six.add_metaclass(ABCMeta)
-class SimpleRegexAnnotationExtension(AnnotationExtension):
+class SimpleRegexAnnotationExtension(AnnotationExtension, metaclass=ABCMeta):
     """
     Abstract base class for languages that have comments which can be reasonably searched using regular expressions.
     """
diff --git a/code_annotations/find_django.py b/code_annotations/find_django.py
index d73ff03..225fa06 100644
--- a/code_annotations/find_django.py
+++ b/code_annotations/find_django.py
@@ -11,7 +11,6 @@
 import yaml
 from django.apps import apps
 from django.db import models
-from six import text_type
 
 from code_annotations.base import BaseSearch
 from code_annotations.helpers import fail, get_annotation_regex
@@ -162,7 +161,7 @@ def _append_safelisted_model_annotations(self, safelisted_models, model_id, mode
                 'annotation_data': comment.strip(),
                 'extra': {
                     'object_id': model_id,
-                    'full_comment': text_type(safelisted_models[model_id])
+                    'full_comment': str(safelisted_models[model_id])
                 }
             })
 
diff --git a/docs/conf.py b/docs/conf.py
index 32a498a..d9296e5 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -22,7 +22,6 @@
 from subprocess import check_call
 
 import edx_theme
-import six
 
 
 def get_version(*file_paths):
@@ -496,5 +495,5 @@ def on_init(app):  # pylint: disable=unused-argument
 
 def setup(app):
     """Sphinx extension: run sphinx-apidoc."""
-    event = 'builder-inited' if six.PY3 else b'builder-inited'
+    event = 'builder-inited'
     app.connect(event, on_init)