diff --git a/setup.py b/setup.py
index 9f0af77..6fefa27 100644
--- a/setup.py
+++ b/setup.py
@@ -51,6 +51,7 @@ def run_tests(self):
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
+        "Programming Language :: Python :: 3.13",
         "Programming Language :: Python :: Implementation :: CPython",
         "Programming Language :: Python :: Implementation :: PyPy",
     ],
diff --git a/tox.ini b/tox.ini
index eaafb32..a5ec656 100644
--- a/tox.ini
+++ b/tox.ini
@@ -23,6 +23,8 @@ commands =
     pytest --doctest-modules
 extras =
     test
+setenv =
+    LOGNAME=dummy
 
 [testenv:lint]
 basepython = python3