diff --git a/tox.ini b/tox.ini
index 5c9f6c5..fad0aa6 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,7 +14,7 @@ commands =
 deps =
   -r{toxinidir}/dev-requirements.txt
   -r{toxinidir}/requirements.txt
-  py{37,38,39}-{optional}: -r{toxinidir}/optional-requirements.txt
+  {optional}: -r{toxinidir}/optional-requirements.txt
 
 
 [testenv:docs]