diff --git a/mypy/moduleinfo.py b/mypy/moduleinfo.py
index ec6a8fdfde23..3d3dab20f317 100644
--- a/mypy/moduleinfo.py
+++ b/mypy/moduleinfo.py
@@ -270,9 +270,11 @@
     'decimal',
     'difflib',
     'dis',
+    'distutils',
     'doctest',
     'dummy_threading',
     'email',
+    'encodings',
     'fcntl',
     'filecmp',
     'fileinput',