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-rw-r--r--changelog.d/9117.bugfix1
-rw-r--r--synapse/storage/databases/main/pusher.py5
2 files changed, 3 insertions, 3 deletions
diff --git a/changelog.d/9117.bugfix b/changelog.d/9117.bugfix
new file mode 100644
index 0000000000..233a76d18b
--- /dev/null
+++ b/changelog.d/9117.bugfix
@@ -0,0 +1 @@
+Fix corruption of `pushers` data when a postgres bouncer is used.
diff --git a/synapse/storage/databases/main/pusher.py b/synapse/storage/databases/main/pusher.py
index 77ba9d819e..bc7621b8d6 100644
--- a/synapse/storage/databases/main/pusher.py
+++ b/synapse/storage/databases/main/pusher.py
@@ -17,14 +17,13 @@
 import logging
 from typing import TYPE_CHECKING, Any, Dict, Iterable, Iterator, List, Optional, Tuple
 
-from canonicaljson import encode_canonical_json
-
 from synapse.push import PusherConfig, ThrottleParams
 from synapse.storage._base import SQLBaseStore, db_to_json
 from synapse.storage.database import DatabasePool
 from synapse.storage.types import Connection
 from synapse.storage.util.id_generators import StreamIdGenerator
 from synapse.types import JsonDict
+from synapse.util import json_encoder
 from synapse.util.caches.descriptors import cached, cachedList
 
 if TYPE_CHECKING:
@@ -315,7 +314,7 @@ class PusherStore(PusherWorkerStore):
                     "device_display_name": device_display_name,
                     "ts": pushkey_ts,
                     "lang": lang,
-                    "data": bytearray(encode_canonical_json(data)),
+                    "data": json_encoder.encode(data),
                     "last_stream_ordering": last_stream_ordering,
                     "profile_tag": profile_tag,
                     "id": stream_id,