diff --git a/requirements.txt b/requirements.txt
index 705d27f..ebaaf70 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,11 +5,11 @@ coverage
 pandas
 pyyaml
 nexusformat
-pytest
+pytest==7.4.4
 pytest-lazy-fixture
 nbsphinx
 jupyter-sphinx
 jupyterlab
 ipywidgets
 coverage==6.3.2
-pytest-cov
\ No newline at end of file
+pytest-cov