diff --git a/tox.ini b/tox.ini
index 60eb14ea..2f77a05d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,7 +3,7 @@ envlist = py311
 skipsdist = True
 
 [testenv]
-passenv = EPC_AUTH_TOKEN AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY AWS_SESSION_TOKEN AWS_DEFAULT_REGION AWS_REGION
+passenv = EPC_AUTH_TOKEN, AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_SESSION_TOKEN, AWS_DEFAULT_REGION, AWS_REGION
 description = Install dependencies and run tests
 deps =
     -rbackend/engine/requirements.txt