diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 5d7ad77..aa176fd 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -20,6 +20,12 @@ repos:
         args: [--pytest-test-first]
       - id: trailing-whitespace
 
+  - repo: https://github.com/adamchainz/django-upgrade
+    rev: 1.30.0
+    hooks:
+      - id: django-upgrade
+        args: [--target-version, "6.0"]
+
   - repo: https://github.com/astral-sh/ruff-pre-commit
     rev: v0.15.5
     hooks:
diff --git a/config/settings.py b/config/settings.py
index 8a6519c..b7347b3 100644
--- a/config/settings.py
+++ b/config/settings.py
@@ -71,7 +71,6 @@ DATA_DIR: Path = get_data_dir()
 
 ADMINS: list[tuple[str, str]] = [("Joakim Hellsén", "tlovinator@gmail.com")]
 BASE_DIR: Path = Path(__file__).resolve().parent.parent
-DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"
 ROOT_URLCONF = "config.urls"
 SECRET_KEY: str = os.getenv("DJANGO_SECRET_KEY", default="")
 if not SECRET_KEY: