diff --git a/pyproject.toml b/pyproject.toml
index 19a0a7c9..ac2a5ee3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,7 +44,7 @@ dev = [
     "coverage<8",
     "mypy<1.19",
     "poethepoet<1",
-    "pytest<9",
+    "pytest<10",
     "pytz>=2025.2",
     "ruff<0.15",
     "setuptools>=80.9.0",