diff --git a/requirements.txt b/requirements.txt
index a9ebc4e93..b7e17c799 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -34,3 +34,4 @@ pytest-xdist==1.34.0
 # of its own setup.py file, then this list must include an entry for that
 # setup.py file, e.g., '-e .' or '-e ./python' (without the quotes).
 -e ./python
+-e ./../test_support