diff --git a/python-server/requirements-dev.txt b/python-server/requirements-dev.txt
index c30cc54..200ddc3 100644
--- a/python-server/requirements-dev.txt
+++ b/python-server/requirements-dev.txt
@@ -3,5 +3,5 @@
 #
 # The unit tests stub the heavy OpenCV/Keras/TensorFlow runtime, so they can
 # run without a GPU or the full ML stack installed.
-pytest==8.3.3
+pytest==9.1.1
 pip-audit==2.7.3