diff --git a/setup.py b/setup.py
index e89d9e8..5600f16 100644
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@ def read(f):
 
 setup(
     name="drf-recaptcha",
-    version="3.0.0",
+    version="3.1.0",
     description="Django rest framework recaptcha field serializer.",
     long_description=read("README.md"),
     long_description_content_type="text/markdown",
@@ -22,7 +22,7 @@ def read(f):
         "django-ipware>=2.1",
     ],
     setup_requires=["pytest-runner"],
-    tests_require=["pytest", "pytest-django", "pytest-cov", "pytest-mock"],
+    tests_require=["pytest", "pytest-django", "pytest-cov", "pytest-mock", "pytz"],
     python_requires=">=3.7",
     include_package_data=True,
     zip_safe=False,
diff --git a/tests/settings.py b/tests/settings.py
index bfbc425..134e6f0 100644
--- a/tests/settings.py
+++ b/tests/settings.py
@@ -8,4 +8,6 @@
     "default": {"ENGINE": "django.db.backends.sqlite3", "NAME": "test.sqlite3"}
 }
 
+USE_TZ = False
+
 DRF_RECAPTCHA_SECRET_KEY = "TEST_DRF_RECAPTCHA_SECRET_KEY"
diff --git a/tests/test_checks.py b/tests/test_checks.py
index 5e76853..16c8449 100644
--- a/tests/test_checks.py
+++ b/tests/test_checks.py
@@ -1,6 +1,3 @@
-import pytest
-from django.core.exceptions import ImproperlyConfigured
-
 from drf_recaptcha.checks import recaptcha_system_check
 from drf_recaptcha.constants import TEST_V2_SECRET_KEY
 
@@ -8,10 +5,9 @@
 def test_warning_no_secret_key(settings):
     settings.DRF_RECAPTCHA_SECRET_KEY = None
 
-    with pytest.raises(ImproperlyConfigured) as exc_info:
-        recaptcha_system_check(None)
-
-    assert str(exc_info.value) == "settings.DRF_RECAPTCHA_SECRET_KEY must be set."
+    errors = recaptcha_system_check(None)
+    assert len(errors) == 1
+    assert errors[0].msg == "settings.DRF_RECAPTCHA_SECRET_KEY must be set."
 
 
 def test_silent_testing(settings):