diff --git a/tox.ini b/tox.ini
index c52988e..fb5732f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,27 +1,26 @@
 [tox]
 envlist=flake8,mypy,py3
 
 [testenv:py3]
 deps =
   .[testing]
   pytest-cov
 whitelist_externals = mvn
 commands =
   mvn -f java/server/pom.xml compile assembly:single
   pytest --cov=swh --cov-branch {posargs}
 
 [testenv:flake8]
 skip_install = true
 deps =
   flake8
 commands =
   {envpython} -m flake8
 
 [testenv:mypy]
 skip_install = true
-ignore_missing_imports = true
 deps =
   .[testing]
   mypy
 commands =
   mypy swh