1 files changed, 1 insertions, 1 deletions

diff --git a/synapse/config/metrics.py b/synapse/config/metrics.py

index 6aad0d37c0..dfd27e1523 100644
--- a/synapse/config/metrics.py
+++ b/synapse/config/metrics.py
@@ -22,7 +22,7 @@ from ._base import Config, ConfigError
 
 
 @attr.s
-class MetricsFlags(object):
+class MetricsFlags:
     known_servers = attr.ib(default=False, validator=attr.validators.instance_of(bool))
 
     @classmethod