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-rw-r--r--sphinx/environment/adapters/toctree.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/sphinx/environment/adapters/toctree.py b/sphinx/environment/adapters/toctree.py
index 565396ec4..387e04886 100644
--- a/sphinx/environment/adapters/toctree.py
+++ b/sphinx/environment/adapters/toctree.py
@@ -27,7 +27,7 @@ if False:
logger = logging.getLogger(__name__)
-class TocTree(object):
+class TocTree:
def __init__(self, env):
# type: (BuildEnvironment) -> None
self.env = env