diff --git a/engine/tox.ini b/engine/tox.ini
index 6fd3d3b6..5707e1df 100644
--- a/engine/tox.ini
+++ b/engine/tox.ini
@@ -11,6 +11,9 @@ banned-modules =
 # https://pytest-django.readthedocs.io/en/latest/configuring_django.html#order-of-choosing-settings
 # https://pytest-django.readthedocs.io/en/latest/database.html
 # https://pytest-xdist.readthedocs.io/en/stable/distribution.html#running-tests-across-multiple-cpus
-addopts = -n auto --dist=loadfile --no-migrations --color=yes --showlocals
+#
+# --dist no = temporarily disable xdist as it's leading to flaky tests :(
+# https://github.com/grafana/oncall-private/issues/2733
+addopts = --dist no --no-migrations --color=yes --showlocals
 # https://pytest-django.readthedocs.io/en/latest/faq.html#my-tests-are-not-being-found-why
 python_files = tests.py test_*.py *_tests.py