diff --git a/tox.ini b/tox.ini
index 1c3a582bc..9b83d27e2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -219,6 +219,8 @@ deps =
     httpx==0.23.0
     toml==0.10.2
     PyGithub==2.4.0
+setenv   =
+    PYTHONPATH = {env:PYTHONPATH:}{:}{toxinidir}
 commands =
     python scripts/gen-scie-platform.py {posargs}