diff --git a/app/models/__init__.py b/app/models/__init__.py
index 54e8928..120582e 100644
--- a/app/models/__init__.py
+++ b/app/models/__init__.py
@@ -1,5 +1,6 @@
 from app.models.user import User
 from app.models.set import Set
 from app.models.instruction import Instruction
+from app.models.extra_file import ExtraFile
 
-__all__ = ['User', 'Set', 'Instruction']
+__all__ = ['User', 'Set', 'Instruction', 'ExtraFile']