diff --git a/pyproject.toml b/pyproject.toml
index 33abea6f1a8..9d7ce590b85 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -58,7 +58,7 @@ dependencies = [
     "django-treebeard==4.7.1",
     "django-guardian<2.4.1",
     "django-downloadview==2.3.0",
-    "django-polymorphic==3.1.0",
+    "django-polymorphic==4.11.3",
     "django-tastypie<0.15.0",
     "django-tinymce==3.7.1",
     "django-uuid-upload-path==1.0.0",