diff --git a/tox.ini b/tox.ini
--- a/tox.ini
+++ b/tox.ini
@@ -11,7 +11,7 @@
   pytest-cov
   dev: pdbpp
 commands =
-  pytest \
+  pytest -vv \
   !dev: --cov={envsitepackagesdir}/swh/loader/ --cov-branch \
          {envsitepackagesdir}/swh/loader/ {posargs}