diff --git a/tox.ini b/tox.ini
index 8421ce88..ebb0cf21 100644
--- a/tox.ini
+++ b/tox.ini
@@ -69,6 +69,7 @@ changedir=
   doc: docs
 
 commands =
+  python -m pip install --upgrade pip
 
   # check depedencies
   pip check