diff --git a/tests/integration/test_impostors.py b/tests/integration/test_impostors.py
index 2f94401..8d5644c 100644
--- a/tests/integration/test_impostors.py
+++ b/tests/integration/test_impostors.py
@@ -63,7 +63,6 @@ def test_add_stub_to_running_impostor(mock_server):
     )
 
     with mock_server(impostor):
-
         responses = [requests.get(f"{impostor.url}/test{i}") for i in range(3)]
         assert_that(
             responses,
@@ -101,7 +100,6 @@ def test_add_stubs_to_running_impostor(mock_server):
     )
 
     with mock_server(impostor):
-
         responses = [requests.get(f"{impostor.url}/test{i}") for i in range(3)]
         assert_that(
             responses,
diff --git a/tests/integration/test_server.py b/tests/integration/test_server.py
index 347c535..f077081 100644
--- a/tests/integration/test_server.py
+++ b/tests/integration/test_server.py
@@ -81,7 +81,6 @@ def test_allow_multiple_servers_on_different_ports():
         imposter2 = Imposter(Stub(Predicate(path="/test"), Response(body="bacon")))
 
         with server1(imposter1), server2(imposter2):
-
             response1 = requests.get(f"{imposter1.url}/test")
             response2 = requests.get(f"{imposter2.url}/test")
 
@@ -116,7 +115,6 @@ def test_remove_and_replace_impostor_from_running_server(mock_server):
             Imposter(Stub(Predicate(path="/test"), Response(body="chips")), name="chips"),
         ]
     ) as server:
-
         # Retrieve impostor details from running server, and check they work
         initial = server.query_all_imposters()
 
diff --git a/tests/unit/mbtest/test_server.py b/tests/unit/mbtest/test_server.py
index 98854c7..ec1bb1e 100644
--- a/tests/unit/mbtest/test_server.py
+++ b/tests/unit/mbtest/test_server.py
@@ -15,7 +15,6 @@
 def test_server_default_options():
     # Given
     with patch("subprocess.Popen") as popen, patch("requests.get"):
-
         # When
         ExecutingMountebankServer(port=1234)
 
@@ -43,7 +42,6 @@ def test_server_default_options():
 def test_server_non_default_options():
     # Given
     with patch("subprocess.Popen") as popen, patch("requests.get"):
-
         # When
         ExecutingMountebankServer(
             executable=Path("somepath/mb"),