diff --git a/tox.ini b/tox.ini
--- a/tox.ini
+++ b/tox.ini
@@ -21,8 +21,8 @@
     sqlalchemy-stubs
 commands =
     # No where close to passing yet, but nice to have.
-    - mypy --junit-xml=junit-{envname}.xml --py2 --ignore-missing-imports lnt
-    - mypy --junit-xml=junit-{envname}.xml --ignore-missing-imports lnt
+    - mypy --no-incremental --junit-xml=junit-{envname}.xml --py2 --ignore-missing-imports lnt
+    - mypy --no-incremental --junit-xml=junit-{envname}.xml --ignore-missing-imports lnt
 
 [testenv:flake8]
 skip_install = true