1 files changed, 1 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index e546f9d..c14d8b8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -61,7 +61,7 @@ deps =
 	pyliblzma
 
 [testenv]
-commands = coverage run -p -m unittest discover -v
+commands = coverage run --concurrency=multiprocessing -p -m unittest discover -v
 
 [testenv:end]
 deps =