diff --git a/synapse/__init__.py b/synapse/__init__.py
index d44a03a2cb..95a49c20be 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -47,7 +47,7 @@ try:
except ImportError:
pass
-__version__ = "1.49.0"
+__version__ = "1.49.2"
if bool(os.environ.get("SYNAPSE_TEST_PATCH_LOG_CONTEXTS", False)):
# We import here so that we don't have to install a bunch of deps when
diff --git a/synapse/python_dependencies.py b/synapse/python_dependencies.py
index 7d26954244..13fb69460e 100644
--- a/synapse/python_dependencies.py
+++ b/synapse/python_dependencies.py
@@ -50,7 +50,8 @@ logger = logging.getLogger(__name__)
REQUIREMENTS = [
# we use the TYPE_CHECKER.redefine method added in jsonschema 3.0.0
"jsonschema>=3.0.0",
- "frozendict>=1",
+ # frozendict 2.1.2 is broken on Debian 10: https://github.com/Marco-Sulla/python-frozendict/issues/41
+ "frozendict>=1,<2.1.2",
"unpaddedbase64>=1.1.0",
"canonicaljson>=1.4.0",
# we use the type definitions added in signedjson 1.1.
diff --git a/synapse/rest/client/sync.py b/synapse/rest/client/sync.py
index 88e4f5e063..7f5846d389 100644
--- a/synapse/rest/client/sync.py
+++ b/synapse/rest/client/sync.py
@@ -522,7 +522,15 @@ class SyncRestServlet(RestServlet):
time_now=time_now,
# Don't bother to bundle aggregations if the timeline is unlimited,
# as clients will have all the necessary information.
- bundle_aggregations=room.timeline.limited,
+ # bundle_aggregations=room.timeline.limited,
+ #
+ # richvdh 2021-12-15: disable this temporarily as it has too high an
+ # overhead for initialsyncs. We need to figure out a way that the
+ # bundling can be done *before* the events are stored in the
+ # SyncResponseCache so that this part can be synchronous.
+ #
+ # Ensure to re-enable the test at tests/rest/client/test_relations.py::RelationsTestCase.test_bundled_aggregations.
+ bundle_aggregations=False,
token_id=token_id,
event_format=event_formatter,
only_event_fields=only_fields,
|