diff --git a/requirements.txt b/requirements.txt
index 7bc42463bb0..49a52d294b6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -35,7 +35,7 @@ django-modeltranslation>=0.11,<0.19.0
 django-treebeard==4.7.1
 django-guardian<2.4.1
 django-downloadview==2.3.0
-django-polymorphic==3.1.0
+django-polymorphic==4.1.0
 django-tastypie<0.15.0
 django-tinymce==3.7.1
 django-grappelli==4.0.1
diff --git a/setup.cfg b/setup.cfg
index 30f623259ec..8aa0a784a58 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -61,7 +61,7 @@ install_requires =
     django-treebeard==4.7.1
     django-guardian<2.4.1
     django-downloadview==2.3.0
-    django-polymorphic==3.1.0
+    django-polymorphic==4.1.0
     django-tastypie<0.15.0
     django-tinymce==3.7.1
     django-grappelli==4.0.1