make version optional in body of e2e backup version update

to agree with latest version of the MSC

1 files changed, 2 insertions, 2 deletions

diff --git a/synapse/handlers/e2e_room_keys.py b/synapse/handlers/e2e_room_keys.py

index a9d80f708c..0cea445f0d 100644
--- a/synapse/handlers/e2e_room_keys.py
+++ b/synapse/handlers/e2e_room_keys.py
@@ -352,8 +352,8 @@ class E2eRoomKeysHandler(object):
             A deferred of an empty dict.
         """
         if "version" not in version_info:
-            raise SynapseError(400, "Missing version in body", Codes.MISSING_PARAM)
-        if version_info["version"] != version:
+            version_info["version"] = version
+        elif version_info["version"] != version:
             raise SynapseError(
                 400, "Version in body does not match", Codes.INVALID_PARAM
             )