diff --git a/tox.ini b/tox.ini
index fcb923b..418fb22 100644
--- a/tox.ini
+++ b/tox.ini
@@ -33,8 +33,12 @@ setenv =
     PYTHONUNBUFFERED=1
     # new resolve a must or test extras will not install right
     PIP_USE_FEATURE=2020-resolver
+    # endless loop bug on devel
+    devel: PIP_USE_FEATURE=
     MOLECULE_NO_LOG=0
 deps =
+    # https://github.com/willmcgugan/rich/issues/446
+    py36-devel: dataclasses==0.7
     devel: ansible>=2.10.0a2,<2.11
     py{36,37,38,39}: molecule[ansible,test]
     py{36,37,38,39}-{devel}: git+https://github.com/ansible-community/molecule.git@master#egg=molecule[test]