diff --git a/pyproject.toml b/pyproject.toml
index 117e0b3..e1017c9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -72,7 +72,7 @@ dev-pylint = [
   "frequenz-client-common[dev-mkdocs,dev-noxfile,dev-pytest]",
 ]
 dev-pytest = [
-  "pytest == 8.4.2",
+  "pytest == 9.0.1",
   "frequenz-repo-config[extra-lint-examples] == 0.13.6",
   "hypothesis == 6.140.3",
   "pytest-mock == 3.15.1",