diff --git a/tests/test_command.py b/tests/test_command.py
index 2d48aeb..485dd73 100644
--- a/tests/test_command.py
+++ b/tests/test_command.py
@@ -67,6 +67,7 @@ def test_command_custom_settings(capsys, clear_generator_settings):
     assert 'description: custom setting' in capsys.readouterr().out
 
 
+@pytest.mark.django_db
 def test_command_check(capsys):
     management.call_command('check', '--deploy')
     stderr = capsys.readouterr().err
diff --git a/tests/test_fields.yml b/tests/test_fields.yml
index b058b13..9be1e69 100644
--- a/tests/test_fields.yml
+++ b/tests/test_fields.yml
@@ -263,6 +263,7 @@ components:
           maxLength: 200
         field_ip_generic:
           type: string
+          format: ipv6
         field_decimal:
           type: string
           format: decimal
diff --git a/tests/test_fields_oas_3_1.yml b/tests/test_fields_oas_3_1.yml
index ec52e28..32b4b40 100644
--- a/tests/test_fields_oas_3_1.yml
+++ b/tests/test_fields_oas_3_1.yml
@@ -264,6 +264,7 @@ components:
           maxLength: 200
         field_ip_generic:
           type: string
+          format: ipv6
         field_decimal:
           type: string
           format: decimal