diff --git a/requirements.txt b/requirements.txt
index 757648f..e71cc56 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,10 @@ aiocoap[linkheader]>=0.4b3
 beautifulsoup4
 iotlabcli
 pygithub
-pytest
+# https://docs.pytest.org/en/stable/changelog.html#pytest-7-4-0-2023-06-23
+# changed something about testpaths so that `.tox` gets included in certain
+# cases
+pytest<7.4
 pytest-cov
 pytest-rerunfailures
 riotctrl