diff --git a/tests/conftest.py b/tests/conftest.py
index cc32cc637..79cabd5e1 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -18,6 +18,8 @@ def pytest_addoption(parser):
 def pytest_configure(config):
     from django.conf import settings
 
+    # USE_L10N is deprecated, and will be removed in Django 5.0.
+    use_l10n = {"USE_L10N": True} if django.VERSION < (4, 0) else {}
     settings.configure(
         DEBUG_PROPAGATE_EXCEPTIONS=True,
         DATABASES={
@@ -33,7 +35,6 @@ def pytest_configure(config):
         SITE_ID=1,
         SECRET_KEY='not very secret in tests',
         USE_I18N=True,
-        USE_L10N=True,
         STATIC_URL='/static/',
         ROOT_URLCONF='tests.urls',
         TEMPLATES=[
@@ -68,6 +69,7 @@ def pytest_configure(config):
         PASSWORD_HASHERS=(
             'django.contrib.auth.hashers.MD5PasswordHasher',
         ),
+        **use_l10n,
     )
 
     # guardian is optional
diff --git a/tests/test_fields.py b/tests/test_fields.py
index 2d4cc44ae..a3b37584b 100644
--- a/tests/test_fields.py
+++ b/tests/test_fields.py
@@ -1220,12 +1220,12 @@ class TestNoStringCoercionDecimalField(FieldValues):
 
 
 class TestLocalizedDecimalField(TestCase):
-    @override_settings(USE_L10N=True, LANGUAGE_CODE='pl')
+    @override_settings(LANGUAGE_CODE='pl')
     def test_to_internal_value(self):
         field = serializers.DecimalField(max_digits=2, decimal_places=1, localize=True)
         assert field.to_internal_value('1,1') == Decimal('1.1')
 
-    @override_settings(USE_L10N=True, LANGUAGE_CODE='pl')
+    @override_settings(LANGUAGE_CODE='pl')
     def test_to_representation(self):
         field = serializers.DecimalField(max_digits=2, decimal_places=1, localize=True)
         assert field.to_representation(Decimal('1.1')) == '1,1'