Add support for Django 6.0

Django 5.0 LTS ended mainstream support on 12/3/25.

This updates the tox testing matrix and GitHub Action to test against
Django 6.0 with Python 3.13. It drops explicit testing against 5.1 to
keep the matrix from becoming too large. We now test against 4.2, 5.2,
and 6.0 (all LTS).

We can remove some deprecated Django version checks that were only
relevant for older versions.

The docs for unique_together indicate that it may be deprecated in
future [0]. This note was added to the docs way back in Django 2.2. This
commit modernizes our constraint to use models.UniqueConstraint instead.

Pyproject classifiers have been updated to add Django 6.0.

[0] https://docs.djangoproject.com/en/6.0/ref/models/options/#django.db.models.Options.unique_together

Author: chosak

.github/workflows/test.yml

@@ -35,14 +35,14 @@ jobs:
             django: "4.2"
           - python: "3.13"
             django: "4.2"
-          - python: "3.12"
-            django: "5.1"
-          - python: "3.13"
-            django: "5.1"
           - python: "3.12"
             django: "5.2"
           - python: "3.13"
             django: "5.2"
+          - python: "3.12"
+            django: "6.0"
+          - python: "3.13"
+            django: "6.0"
 
     steps:
       - uses: actions/checkout@v5

docs/releasenotes.md

@@ -1,5 +1,13 @@
 # Release Notes
 
+## Unreleased
+
+### What's new?
+
+- Added support for Django 6.0
+- Removed obsolete Django version checks
+
+
 ## 5.1.0
 
 ### What's new?

flags/__init__.py

@@ -1,5 +0,0 @@
-import django
-
-
-if django.VERSION < (3, 2):
-    default_app_config = "flags.apps.DjangoFlagsConfig"

flags/migrations/0014_flagstate_unique_constraint.py

@@ -0,0 +1,24 @@
+# Generated by Django 6.0.2 on 2026-02-10 15:23
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("flags", "0013_add_required_field"),
+    ]
+
+    operations = [
+        migrations.AlterUniqueTogether(
+            name="flagstate",
+            unique_together=set(),
+        ),
+        migrations.AddConstraint(
+            model_name="flagstate",
+            constraint=models.UniqueConstraint(
+                fields=("name", "condition", "value"),
+                name="flags_flagstate_unique_name_condition_value",
+            ),
+        ),
+    ]

flags/models.py

@@ -9,7 +9,12 @@ class FlagState(models.Model):
 
     class Meta:
         app_label = "flags"
-        unique_together = ("name", "condition", "value")
+        constraints = [
+            models.UniqueConstraint(
+                fields=["name", "condition", "value"],
+                name="flags_flagstate_unique_name_condition_value",
+            )
+        ]
 
     def __str__(self):
         return (

flags/tests/test_conditions_validators.py

@@ -1,4 +1,3 @@
-import django
 from django.contrib.auth import get_user_model
 from django.core.exceptions import ValidationError
 from django.test import TestCase, override_settings
@@ -89,13 +88,6 @@ def test_invalid_date_strings(self):
         with self.assertRaises(ValidationError):
             validate_date("tomorrowish")
 
-        # Django 4.0 relies on Python 3.7+'s `datetime.fromisoformat()`, which
-        # handles this where the old regex did not. This is now valid when on
-        # Django 4.0+. See https://github.com/django/django/pull/14582
-        if django.VERSION < (4, 0):
-            with self.assertRaises(ValidationError):
-                validate_date("2020-04-01")
-
     def test_valid_date_strings(self):
         validate_date("2020-04-01T12:00")
         validate_date("2020-04-01T12:00+04:00")

flags/tests/testapp/__init__.py

@@ -1,5 +0,0 @@
-import django
-
-
-if django.VERSION < (3, 2):
-    default_app_config = "flags.tests.testapp.apps.TestAppConfig"

pyproject.toml

@@ -20,6 +20,7 @@ classifiers = [
     "Framework :: Django :: 4.2",
     "Framework :: Django :: 5.1",
     "Framework :: Django :: 5.2",
+    "Framework :: Django :: 6.0",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3.10",

tox.ini

@@ -3,7 +3,8 @@ skipsdist=True
 envlist=
     lint,
     python{3.10,3.13}-django4.2
-    python{3.12,3.13}-django{5.1,5.2}
+    python{3.12,3.13}-django5.2
+    python{3.12,3.13}-django6.0
     coverage
 
 [testenv]
@@ -20,8 +21,8 @@ basepython=
 
 deps=
     django4.2: Django~=4.2
-    django5.1: Django~=5.1
     django5.2: Django~=5.2
+    django6.0: Django~=6.0
 
 [testenv:lint]
 basepython=python3.13