diff --git a/TODO b/TODO
index 11c829d..c236669 100644
--- a/TODO
+++ b/TODO
@@ -21,7 +21,3 @@ other known problems:
 - we should add dates to the outputs, to make it more useful in logfiles
 
 - maybe change logo in browser dark mode to https://upload.wikimedia.org/wikipedia/commons/2/2a/Wmde_logo_vert_weiss.png
-
-- warning from django 3.2:
-input.BusinessCard: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'.
-	HINT: Configure the DEFAULT_AUTO_FIELD setting or the InputConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.db.models.BigAutoField'.
diff --git a/foerderbarometer/settings_development.py b/foerderbarometer/settings_development.py
index e956a23..3b3ff79 100644
--- a/foerderbarometer/settings_development.py
+++ b/foerderbarometer/settings_development.py
@@ -146,3 +146,6 @@ USE_TZ = True
 # https://docs.djangoproject.com/en/3.1/howto/static-files/
 
 STATIC_URL = '/static/'
+
+# needed since django 3.2
+DEFAULT_AUTO_FIELD = 'django.db.models.AutoField'