diff --git a/pyproject.toml b/pyproject.toml
index 9ac2da9..bac22f2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,7 +45,7 @@ Changelog = "https://github.com/askmy-stack/tool-semantics/blob/main/CHANGELOG.m
 
 [project.optional-dependencies]
 dev = [
-  "pytest>=8,<9",
+  "pytest>=8,<10",
   "pytest-cov>=5,<7",
   "ruff>=0.6,<1",
   "mypy>=1.11,<2",