diff --git a/pyproject.toml b/pyproject.toml
index 3825e0e7..5c160ade 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ dev = [
     "pre-commit==4.4.0",
     "ruff==0.14.4",
     "pylint==4.0.2",
-    "pytest==8.4.2",
+    "pytest==9.0.0",
 ]
 doc = ["sphinx"]