diff --git a/freezefrog/__init__.py b/freezefrog/__init__.py
index 44a232a..60463f3 100644
--- a/freezefrog/__init__.py
+++ b/freezefrog/__init__.py
@@ -47,6 +47,12 @@ class FakeDateTime(with_metaclass(FakeDateTimeMeta, real_datetime)):
             cls._start = real_datetime.utcnow()
         return (real_datetime.utcnow() - cls._start) + cls.dt
 
+    @classmethod
+    def now(cls, *args, **kwargs):
+        raise NotImplementedError(
+            '{}.now() is not implemented yet'.format(cls.__name__)
+        )
+
 
 class FakeFixedDateTime(FakeDateTime):
     @classmethod

FreezeFrog should also mock datetime.datetime.now
FreezeFrog should raise an exception when datetime.datetime.now() is used without a TZ instead of not mocking it at all.

diff --git a/tests/__init__.py b/tests/__init__.py
index dd74be2..093fc1c 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -27,3 +27,9 @@ class FreezeFrogTestCase(unittest.TestCase):
             end = datetime.datetime(2014, 1, 1, 0, 0, 1)
             self.assertTrue(start < dt < end)
             self.assertTrue(1388534400 < time.time() < 1388534401)
+
+    def test_now(self):
+        regular_now = datetime.datetime.now()
+        self.assertTrue(regular_now)
+        with FreezeTime(datetime.datetime(2014, 1, 1)):
+            self.assertRaises(NotImplementedError, datetime.datetime.now)

pip install -e .
parse_log_pytest
requirements.txt
pytest
3.9
requirements.txt
pytest --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning
exceptiongroup==1.2.2
-e git+https://github.com/closeio/freezefrog.git@c7089ad8d9b3900f2528a94b43bfc842f62023c9#egg=freezefrog
iniconfig==2.1.0
mock==1.3.0
packaging==24.2
pbr==6.1.1
pluggy==1.5.0
pytest==8.3.5
six==1.17.0
tomli==2.2.1

name: freezefrog
channels:
  - defaults
  - https://repo.anaconda.com/pkgs/main
  - https://repo.anaconda.com/pkgs/r
  - conda-forge
dependencies:
  - _libgcc_mutex=0.1=main
  - _openmp_mutex=5.1=1_gnu
  - ca-certificates=2025.2.25=h06a4308_0
  - ld_impl_linux-64=2.40=h12ee557_0
  - libffi=3.4.4=h6a678d5_1
  - libgcc-ng=11.2.0=h1234567_1
  - libgomp=11.2.0=h1234567_1
  - libstdcxx-ng=11.2.0=h1234567_1
  - ncurses=6.4=h6a678d5_0
  - openssl=3.0.16=h5eee18b_0
  - pip=25.0=py39h06a4308_0
  - python=3.9.21=he870216_1
  - readline=8.2=h5eee18b_0
  - setuptools=75.8.0=py39h06a4308_0
  - sqlite=3.45.3=h5eee18b_0
  - tk=8.6.14=h39e8969_0
  - tzdata=2025a=h04d1e81_0
  - wheel=0.45.1=py39h06a4308_0
  - xz=5.6.4=h5eee18b_1
  - zlib=1.2.13=h5eee18b_1
  - pip:
      - exceptiongroup==1.2.2
      - iniconfig==2.1.0
      - mock==1.3.0
      - packaging==24.2
      - pbr==6.1.1
      - pluggy==1.5.0
      - pytest==8.3.5
      - six==1.17.0
      - tomli==2.2.1
prefix: /opt/conda/envs/freezefrog

tests/__init__.py::FreezeFrogTestCase::test_now
tests/__init__.py::FreezeFrogTestCase::test_freeze tests/__init__.py::FreezeFrogTestCase::test_freeze_tick
freezefrog/__init__.py
freezefrog/__init__.py