Ensure that calls to `json.dumps` are compatible with the standard library json. (#7836)

1 files changed, 3 insertions, 1 deletions

diff --git a/synapse/api/errors.py b/synapse/api/errors.py

index cc5edb5118..b3bab1aa52 100644
--- a/synapse/api/errors.py
+++ b/synapse/api/errors.py
@@ -15,12 +15,14 @@
 # limitations under the License.
 
 """Contains exceptions and error codes."""
-import json
+
 import logging
 import typing
 from http import HTTPStatus
 from typing import Dict, List, Optional, Union
 
+from canonicaljson import json
+
 from twisted.web import http
 
 if typing.TYPE_CHECKING: