diff --git a/pyproject.toml b/pyproject.toml
index 0c0057a..852424a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ dependencies = [
 [project.optional-dependencies]
 dev = [
   "build>=1.2,<2",
-  "pytest>=8.3,<9",
+  "pytest>=8.3,<10",
   "pytest-cov>=5.0,<8",
   "ruff>=0.6,<1",
   "mypy>=1.11,<2",