diff --git a/python-recipes/parallel-investor-signals/requirements-dev.txt b/python-recipes/parallel-investor-signals/requirements-dev.txt
index 34d3e1c..988d878 100644
--- a/python-recipes/parallel-investor-signals/requirements-dev.txt
+++ b/python-recipes/parallel-investor-signals/requirements-dev.txt
@@ -1,3 +1,3 @@
 # Dev/test tooling (app runtime deps live in project/backend/requirements.txt)
-pytest==8.4.2
+pytest==9.0.3
 ruff==0.14.4