diff --git a/requirements/requirements-test.txt b/requirements/requirements-test.txt
index 1a57e0f..de9617b 100644
--- a/requirements/requirements-test.txt
+++ b/requirements/requirements-test.txt
@@ -1,7 +1,7 @@
 matplotlib==3.10.8
 nglview==3.1.4
 numpy==2.3.2
-pytest==8.4.2
+pytest==9.0.3
 scikit-learn==1.7.2
 # TODO: remove this pin when Python 3.10 support is dropped.
 # nglview 3.1.4 still imports pkg_resources, which setuptools 82 removed.