diff --git a/mypy.ini b/mypy.ini
index 1ef8beb0..2d1a7d74 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -38,3 +38,6 @@ ignore_missing_imports = True
 
 [mypy-pygments.*]
 ignore_missing_imports = True
+
+[mypy-visdom]
+ignore_missing_imports = True
diff --git a/tox.ini b/tox.ini
index 8d706ae3..404398c3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,7 @@
 [tox]
 envlist = flake8, mypy, py37, py36
 skipsdist = True
+ignore_basepython_conflict = True
 
 [testenv]
 basepython = python3.7
@@ -24,4 +25,4 @@ commands = flake8 tac simulation sandbox scripts templates tests --exclude=tac/g
 [testenv:mypy]
 basepython = python3.7
 deps = mypy
-commands = mypy sandbox scripts simulation/v1 tac tests templates
+commands = mypy sandbox scripts simulation/v1 tac tests templates --config-file mypy.ini