diff --git a/tox.ini b/tox.ini
index 6e55c35..df03da0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,10 +11,12 @@
   PYTHONDONTWRITEBYTECODE=1
 passenv =
   KUBECONFIG
+  ATMOSPHERE_*
 
 [testenv:venv]
 passenv =
-  ATMOSPHERE_NETWORK_BACKEND
+  ATMOSPHERE_*
+  OS_*
 commands =
   {posargs}
 
@@ -51,7 +53,8 @@
 
 [testenv:molecule-venv]
 passenv =
-  ATMOSPHERE_NETWORK_BACKEND
+  ATMOSPHERE_*
+  OS_*
 deps =
   molecule
   kubernetes