diff --git a/tests/test_band_pass_filter.py b/tests/test_band_pass_filter.py
index 03dfe59b..bc617a07 100644
--- a/tests/test_band_pass_filter.py
+++ b/tests/test_band_pass_filter.py
@@ -1,12 +1,10 @@
-import unittest
-
 import numpy as np
 import torch
 
 from torch_audiomentations import BandPassFilter
 
 
-class TestBandPassFilter(unittest.TestCase):
+class TestBandPassFilter:
     def test_band_pass_filter(self):
         samples = np.array(
             [
@@ -23,5 +21,5 @@ def test_band_pass_filter(self):
             processed_samples = augment(
                 samples=torch.from_numpy(samples), sample_rate=sample_rate
             ).samples.numpy()
-            self.assertEqual(processed_samples.shape, samples.shape)
-            self.assertEqual(processed_samples.dtype, np.float32)
+            assert processed_samples.shape == samples.shape
+            assert processed_samples.dtype == np.float32
diff --git a/tests/test_band_stop_filter.py b/tests/test_band_stop_filter.py
index 5eb32a99..63ca2e99 100644
--- a/tests/test_band_stop_filter.py
+++ b/tests/test_band_stop_filter.py
@@ -1,12 +1,10 @@
-import unittest
-
 import numpy as np
 import torch
 
 from torch_audiomentations import BandStopFilter
 
 
-class TestBandStopFilter(unittest.TestCase):
+class TestBandStopFilter:
     def test_band_reject_filter(self):
         samples = np.array(
             [
@@ -22,5 +20,5 @@ def test_band_reject_filter(self):
         processed_samples = augment(
             samples=torch.from_numpy(samples), sample_rate=sample_rate
         ).samples.numpy()
-        self.assertEqual(processed_samples.shape, samples.shape)
-        self.assertEqual(processed_samples.dtype, np.float32)
+        assert processed_samples.shape == samples.shape
+        assert processed_samples.dtype == np.float32
diff --git a/tests/test_convolution.py b/tests/test_convolution.py
index 8cbb810b..b83ad393 100644
--- a/tests/test_convolution.py
+++ b/tests/test_convolution.py
@@ -1,5 +1,3 @@
-import unittest
-
 import librosa
 import torch
 from numpy.testing import assert_almost_equal
@@ -9,7 +7,7 @@
 from torch_audiomentations.utils.convolution import convolve as torch_convolve
 
 
-class TestConvolution(unittest.TestCase):
+class TestConvolution:
     def test_convolve(self):
         sample_rate = 16000
 
diff --git a/tests/test_file_utils.py b/tests/test_file_utils.py
index c8c18f2c..bf373e34 100644
--- a/tests/test_file_utils.py
+++ b/tests/test_file_utils.py
@@ -1,7 +1,6 @@
 import os
 import shutil
 import tempfile
-import unittest
 import uuid
 from pathlib import Path
 
diff --git a/tests/test_low_pass_filter.py b/tests/test_low_pass_filter.py
index 9bb5559e..a6a6c855 100644
--- a/tests/test_low_pass_filter.py
+++ b/tests/test_low_pass_filter.py
@@ -1,12 +1,10 @@
-import unittest
-
 import numpy as np
 import torch
 
 from torch_audiomentations import LowPassFilter
 
 
-class TestLowPassFilter(unittest.TestCase):
+class TestLowPassFilter:
     def test_low_pass_filter(self):
         samples = np.array(
             [
@@ -22,5 +20,5 @@ def test_low_pass_filter(self):
         processed_samples = augment(
             samples=torch.from_numpy(samples), sample_rate=sample_rate
         ).samples.numpy()
-        self.assertEqual(processed_samples.shape, samples.shape)
-        self.assertEqual(processed_samples.dtype, np.float32)
+        assert processed_samples.shape == samples.shape
+        assert processed_samples.dtype == np.float32