diff --git a/.flake8 b/.flake8
index 4804c1c..8d6a197 100644
--- a/.flake8
+++ b/.flake8
@@ -7,5 +7,6 @@ exclude =
     docs/sphinxext/
     docs/tools/
     reproschema/_version.py
+    reproschema/models/model.py
 max-line-length=79
 extend-ignore = B001, B006, B016, E501, E722, F821