diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 945514566..92af4e226 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -2,6 +2,11 @@
 CHANGELOG
 =========
 
+Unreleased
+==========
+
+* Fix: Define a ``default_auto_field`` as part of the app config.
+
 2.2 (2022-04-20)
 ================
 
diff --git a/filer/apps.py b/filer/apps.py
index 7bd84a295..3bf495a93 100644
--- a/filer/apps.py
+++ b/filer/apps.py
@@ -3,5 +3,6 @@
 
 
 class FilerConfig(AppConfig):
+    default_auto_field = 'django.db.models.AutoField'
     name = 'filer'
     verbose_name = _("Filer")