1 files changed, 1 insertions, 1 deletions
diff --git a/tox.ini b/tox.ini
index fd1ce31..01c695a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -34,7 +34,7 @@ usedevelop=
 # if -n is used, we're working in brand new DBs anyway
 setenv=
     BASECOMMAND=python -m pytest --rootdir {toxinidir}
-    WORKERS=-n4
+    WORKERS={env:TOX_WORKERS:-n4}
     sqla079: WORKERS=--dropfirst
     cov: COVERAGE={[testenv]cov_args}
     sqlite: SQLITE={env:TOX_SQLITE:--db sqlite}