diff --git a/openstack_requirements/constraints.py b/openstack_requirements/constraints.py
index 8c4c5d9a5a..499c6428ff 100644
--- a/openstack_requirements/constraints.py
+++ b/openstack_requirements/constraints.py
@@ -23,6 +23,7 @@ UNCONSTRAINABLE = set([
     'setuptools',
     'wmi',
     'pywin32',
+    'pymi',
     '',  # blank lines
 ])