diff --git a/pyproject.toml b/pyproject.toml
index a44eae7..3e94bc3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,5 +6,5 @@ requires = [
 build-backend = "setuptools.build_meta"
 
 [tool.black]
-target-version = ["py36", "py37", "py38"]
+target-version = ["py36", "py37", "py38", "py312"]
 line-length = 119
diff --git a/setup.py b/setup.py
index cf8ac46..60e9688 100644
--- a/setup.py
+++ b/setup.py
@@ -26,7 +26,7 @@
         'src', exclude=['tests', 'tests.*']
     ),
     package_dir={'': 'src'},
-    python_requires='>=3.6, <3.9',
+    python_requires='>=3.6, <3.13',
     install_requires=[
         'numpy',
         'pybedtools',
diff --git a/tox.ini b/tox.ini
index d5c3f8a..7de73fb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{36,37,38},
+    py{36,37,38,312},
     docs,
     linters,
     packaging,