diff --git a/django_components/component.py b/django_components/component.py
index eabc9ca8..b3d97d52 100644
--- a/django_components/component.py
+++ b/django_components/component.py
@@ -7,13 +7,12 @@
 from django.template.base import NodeList, TokenType
 from django.template.loader import get_template
 from django.utils.safestring import mark_safe
-from six import with_metaclass
 
 # Allow "component.AlreadyRegistered" instead of having to import these everywhere
 from django_components.component_registry import AlreadyRegistered, ComponentRegistry, NotRegistered  # noqa
 
 
-class Component(with_metaclass(MediaDefiningClass)):
+class Component(metaclass=MediaDefiningClass):
 
     def __init__(self, component_name):
         self.__component_name = component_name
diff --git a/requirements-dev.in b/requirements-dev.in
index 52babe2a..b6e91999 100644
--- a/requirements-dev.in
+++ b/requirements-dev.in
@@ -1,5 +1,4 @@
 django
-six
 tox
 pytest
 flake8
diff --git a/requirements-dev.txt b/requirements-dev.txt
index f5ca0a06..274f94ef 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,28 +2,64 @@
 # This file is autogenerated by pip-compile
 # To update, run:
 #
-#    pip-compile --output-file=requirements-dev.txt requirements-dev.in
+#    pip-compile requirements-dev.in
 #
-appdirs==1.4.4            # via virtualenv
-asgiref==3.3.0            # via django
-attrs==20.2.0             # via pytest
-distlib==0.3.1            # via virtualenv
-django==3.1.3             # via -r requirements-dev.in
-filelock==3.0.12          # via tox, virtualenv
-flake8==3.8.4             # via -r requirements-dev.in
-iniconfig==1.1.1          # via pytest
-isort==5.6.4              # via -r requirements-dev.in
-mccabe==0.6.1             # via flake8
-packaging==20.4           # via pytest, tox
-pluggy==0.13.1            # via pytest, tox
-py==1.9.0                 # via pytest, tox
-pycodestyle==2.6.0        # via flake8
-pyflakes==2.2.0           # via flake8
-pyparsing==2.4.7          # via packaging
-pytest==6.1.2             # via -r requirements-dev.in
-pytz==2020.4              # via django
-six==1.15.0               # via -r requirements-dev.in, packaging, tox, virtualenv
-sqlparse==0.4.1           # via django
-toml==0.10.2              # via pytest, tox
-tox==3.20.1               # via -r requirements-dev.in
-virtualenv==20.1.0        # via tox
+appdirs==1.4.4
+    # via virtualenv
+asgiref==3.3.0
+    # via django
+attrs==20.2.0
+    # via pytest
+distlib==0.3.1
+    # via virtualenv
+django==3.1.3
+    # via -r requirements-dev.in
+filelock==3.0.12
+    # via
+    #   tox
+    #   virtualenv
+flake8==3.8.4
+    # via -r requirements-dev.in
+iniconfig==1.1.1
+    # via pytest
+isort==5.6.4
+    # via -r requirements-dev.in
+mccabe==0.6.1
+    # via flake8
+packaging==20.4
+    # via
+    #   pytest
+    #   tox
+pluggy==0.13.1
+    # via
+    #   pytest
+    #   tox
+py==1.9.0
+    # via
+    #   pytest
+    #   tox
+pycodestyle==2.6.0
+    # via flake8
+pyflakes==2.2.0
+    # via flake8
+pyparsing==2.4.7
+    # via packaging
+pytest==6.1.2
+    # via -r requirements-dev.in
+pytz==2020.4
+    # via django
+six==1.15.0
+    # via
+    #   packaging
+    #   tox
+    #   virtualenv
+sqlparse==0.4.1
+    # via django
+toml==0.10.2
+    # via
+    #   pytest
+    #   tox
+tox==3.20.1
+    # via -r requirements-dev.in
+virtualenv==20.1.0
+    # via tox