diff --git a/docs_manual/requirements.txt b/docs_manual/requirements.txt
index 3ac4f2172..c1f16c395 100644
--- a/docs_manual/requirements.txt
+++ b/docs_manual/requirements.txt
@@ -49,7 +49,7 @@ django-environ==0.11.2
 django-extensions==3.2.3
 django-iconify==0.1.1
 django-markupfield==2.0.1
-django-model-utils==4.3.1
+django-model-utils==4.5.1
 django-pagedown==2.2.1
 django-plugins-bihealth==0.4.0
 django-postgres-copy==2.3.7