diff --git a/.codegen.json b/.codegen.json
index a429885..7b6884e 100644
--- a/.codegen.json
+++ b/.codegen.json
@@ -1 +1 @@
-{ "engineHash": "267eec8", "specHash": "1698c95", "version": "0.6.4" }
+{ "engineHash": "c437976", "specHash": "1698c95", "version": "0.6.4" }
diff --git a/.pylintrc b/.pylintrc
index 20209a1..e4301cd 100644
--- a/.pylintrc
+++ b/.pylintrc
@@ -7,7 +7,7 @@
 # pygtk.require().
 #init-hook=
 
-# Add files or directories to the blacklist. They should be base names, not
+# Add files or directories to the denylist. They should be base names, not
 # paths.
 #ignore=CVS
 
diff --git a/box_sdk_gen/box/ccg_auth.py b/box_sdk_gen/box/ccg_auth.py
index fae1065..65346a7 100644
--- a/box_sdk_gen/box/ccg_auth.py
+++ b/box_sdk_gen/box/ccg_auth.py
@@ -230,4 +230,5 @@ def revoke_token(self, *, network_session: Optional[NetworkSession] = None) -> N
             client_secret=self.config.client_secret,
             token=old_token.access_token,
         )
-        return self.token_storage.clear()
+        self.token_storage.clear()
+        return None
diff --git a/box_sdk_gen/box/jwt_auth.py b/box_sdk_gen/box/jwt_auth.py
index 559ed1b..33734a8 100644
--- a/box_sdk_gen/box/jwt_auth.py
+++ b/box_sdk_gen/box/jwt_auth.py
@@ -454,4 +454,5 @@ def revoke_token(self, *, network_session: Optional[NetworkSession] = None) -> N
             client_secret=self.config.client_secret,
             token=old_token.access_token,
         )
-        return self.token_storage.clear()
+        self.token_storage.clear()
+        return None
diff --git a/test/fetch.py b/test/fetch.py
index cb6ae05..f30c635 100644
--- a/test/fetch.py
+++ b/test/fetch.py
@@ -303,7 +303,7 @@ def test_make_request_unauthorised(mock_requests_session, response_401):
 @pytest.mark.parametrize(
     'exc_message, expected_reauthentication_needed',
     [
-        ('Connection aborted', False),
+        ('Connection cancelled', False),
         (
             "Connection broken: ConnectionResetError(54, 'Connection reset by peer')",
             False,
@@ -334,7 +334,7 @@ def test_make_request_network_exception(
 def test_fetch_successfully_retry_network_exception(
     mock_requests_session, network_session_mock, response_200
 ):
-    requests_exception = RequestException('Connection aborted')
+    requests_exception = RequestException('Connection cancelled')
     mock_requests_session.request.side_effect = [requests_exception, response_200]
 
     with patch('time.sleep'):
@@ -347,11 +347,11 @@ def test_fetch_successfully_retry_network_exception(
 def test_fetch_make_only_one_retry_for_network_exception(
     mock_requests_session, network_session_mock
 ):
-    requests_exception = RequestException('Connection aborted')
+    requests_exception = RequestException('Connection cancelled')
     mock_requests_session.request.side_effect = [requests_exception, requests_exception]
 
     with patch('time.sleep'):
-        with pytest.raises(BoxSDKError, match='Connection aborted'):
+        with pytest.raises(BoxSDKError, match='Connection cancelled'):
             fetch(
                 "https://example.com",
                 FetchOptions(network_session=network_session_mock),