diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 946ae51..c2f9473 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9]
+        python-version: [3.9, 3.10.x, 3.11, 3.12]
 
     steps:
     - uses: actions/checkout@v1
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 9364148..8213302 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,2 +1,2 @@
-sphinx==4.4.0
-sphinx_rtd_theme==1.0.0
+sphinx
+sphinx_rtd_theme
diff --git a/setup.cfg b/setup.cfg
index b88034e..08aedd7 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,2 +1,2 @@
 [metadata]
-description-file = README.md
+description_file = README.md
diff --git a/setup.py b/setup.py
index b7b7e63..66880fd 100644
--- a/setup.py
+++ b/setup.py
@@ -28,10 +28,10 @@
         "Natural Language :: English",
         "License :: OSI Approved :: Apache Software License",
         "Programming Language :: Python",
-        "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7",
-        "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
         "Programming Language :: Python :: Implementation :: CPython",
         "Programming Language :: Python :: Implementation :: PyPy",
         "Topic :: Scientific/Engineering :: GIS",
@@ -39,5 +39,4 @@
     ],
     packages=["openlr"],
     install_requires=[],
-    test_suite="tests",
 )
diff --git a/tox.ini b/tox.ini
index 87d2e80..3f608ca 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,9 +1,9 @@
-
 [tox]
-envlist = py{36,37,38,39}, black, coverage, docs
+envlist = py{39,310,311,312}, black, coverage, docs
 
 [testenv]
-commands = python setup.py test
+deps = pytest
+commands = pytest tests
 
 [testenv:black]
 deps = black
@@ -28,7 +28,7 @@ commands = sphinx-build -q -W -b html "." "_build"
 
 [gh-actions]
 python =
-    3.6: py36
-    3.7: py37
-    3.8: py38
-    3.9: py39, docs, coverage, black
+    3.9: py39
+    3.10: py310
+    3.11: py311
+    3.12: py312, docs, coverage, black