diff --git a/tox.ini b/tox.ini
index e0e7b178..5e8606e5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,31 +1,39 @@
 [tox]
-envlist=flake8,py3
+envlist=flake8,mypy,py3
 
 [testenv:py3]
 deps =
   # the dependency below is needed for now as a workaround for
   #   https://github.com/pypa/pip/issues/6239
   swh.core[http] >= 0.0.75
   .[testing]
   pytest-cov
   pifpaf
 commands =
   pifpaf run postgresql -- pytest --cov {envsitepackagesdir}/swh/deposit --cov-branch \
       {envsitepackagesdir}/swh/deposit \
       {posargs}
 
 [testenv:py3-dev]
 deps =
   swh.core[http] >= 0.0.75
   .[testing]
   ipdb
 commands =
   pytest {envsitepackagesdir}/swh/deposit/ {posargs}
 
 [testenv:flake8]
 skip_install = true
 deps =
   flake8
 commands =
   {envpython} -m flake8 \
     --exclude=.tox,.git,__pycache__,.tox,.eggs,*.egg,swh/deposit/migrations
+
+[testenv:mypy]
+skip_install = true
+deps =
+  .[testing]
+  mypy
+commands =
+  mypy swh