diff --git a/tox.ini b/tox.ini
index 631e115..6234410 100644
--- a/tox.ini
+++ b/tox.ini
@@ -16,9 +16,6 @@ whitelist_externals = git
 deps =
     -rtest-requirements.txt
 
-# For regex testing
-extras = regex
-
 # to always force recreation and avoid unexpected side effects
 recreate=True