diff --git a/pyproject.toml b/pyproject.toml
index aada893..a4aa918 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -72,7 +72,7 @@ dev-pylint = [
   "frequenz-resampling[dev-mkdocs,dev-noxfile,dev-pytest]",
 ]
 dev-pytest = [
-  "pytest == 8.4.1",
+  "pytest == 9.0.3",
   "pylint == 3.3.8",       # We need this to check for the examples
   "frequenz-repo-config[extra-lint-examples] == 0.17.0",
   "pytest-mock == 3.14.0",