diff --git a/docs/advanced.rst b/docs/advanced.rst
index 8396529..cf93dcc 100644
--- a/docs/advanced.rst
+++ b/docs/advanced.rst
@@ -71,7 +71,7 @@ Finally, register your class with VCR to use your new serializer.
 
     import vcr
 
-    class BogoSerializer(object):
+    class BogoSerializer:
         """
         Must implement serialize() and deserialize() methods
         """
diff --git a/tests/integration/test_register_persister.py b/tests/integration/test_register_persister.py
index 29d64b1..1391b98 100644
--- a/tests/integration/test_register_persister.py
+++ b/tests/integration/test_register_persister.py
@@ -10,7 +10,7 @@ import vcr
 from vcr.persisters.filesystem import FilesystemPersister
 
 
-class CustomFilesystemPersister(object):
+class CustomFilesystemPersister:
     """Behaves just like default FilesystemPersister but adds .test extension
     to the cassette file"""