diff --git a/pyproject.toml b/pyproject.toml
index addf926..7502cec 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,7 @@ dependencies = [
 [project.optional-dependencies]
 test = [
   "build>=1.2,<2",
-  "pytest>=8,<9",
+  "pytest>=8,<10",
   "pytest-cov>=5,<8",
   "ruff>=0.11,<1",
   "twine>=6,<7",