diff --git a/setup.py b/setup.py
index 76fa79c..e506a80 100644
--- a/setup.py
+++ b/setup.py
@@ -50,6 +50,10 @@
     install_requires=[
         'Django<1.9',
         'django-dynamic-fixture',
+        # TODO Specific version of django-dynamic-fixture is necessary to avoid
+        # AttributeError: can't set attribute` failures on polymorphic models.
+        # See https://github.com/paulocheque/django-dynamic-fixture/pull/59
+        'django-dynamic-fixture==1.9.0+0.caeb3427399edd3b0d589516993c7da55e0de560.ixc',
         'django-icekit',
         'django-polymorphic',
         'django-polymorphic-tree',