diff --git a/pyproject.toml b/pyproject.toml
index 342abd8..5f26651 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -34,7 +34,7 @@ dev = [
     "mypy (>=1.14.0,<2.0.0)",
     "flake8 (>=7.0.0,<8.0.0)",
     "pre-commit (>=3.0.0,<5.0.0)",
-    "tox (>=4.24.0,<4.30.0)",
+    "tox (>=4.24.0,<4.31.0)",
 ]
 
 [tool.black]