diff --git a/tox.ini b/tox.ini
index 50fb66f7e..fd8d8a35b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,7 +3,7 @@ isolated_build = true
 
 [testenv]
 deps = -r{toxinidir}/requirements-dev.txt
-commands = coverage run -m unittest
+commands = coverage run -m unittest {posargs}
 
 # The system-provided libxml2 on MacOS is typically outdated and this can lead to lxml parsing issues
 # Using PyPi-provided binary wheels instead resolves this