diff --git a/noxfile.py b/noxfile.py
index 2639cdd3..7be1f254 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -5,7 +5,17 @@ import nox
 nox.needs_version = ">=2022.1.7"
 nox.options.sessions = ["lint", "tests", "tests_packaging"]
 
-PYTHON_VERSIONS = ["3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "pypy3.7", "pypy3.8"]
+PYTHON_VERSIONS = [
+    "3.6",
+    "3.7",
+    "3.8",
+    "3.9",
+    "3.10",
+    "3.11",
+    "pypy3.7",
+    "pypy3.8",
+    "pypy3.9",
+]
 
 if os.environ.get("CI", None):
     nox.options.error_on_missing_interpreters = True