diff --git a/api_docs/changelog.md b/api_docs/changelog.md
index 548274cadd..69a1098e60 100644
--- a/api_docs/changelog.md
+++ b/api_docs/changelog.md
@@ -20,6 +20,15 @@ format used by the Zulip server that they are interacting with.
 
 ## Changes in Zulip 10.0
 
+**Feature level 306**
+
+* [`GET /events`](/api/get-events): Removed the `extra_data` optional
+  field from the `realm/update` event format, which was only used for
+  `plan_type` events, with a single `upload_quota` field. Now, we use
+  a standard `realm/update_dict` event to notify clients about changes
+  in `plan_type` and other fields that atomically change with a given
+  change in plan.
+
 **Feature level 305**
 
 * [`POST /register`](/api/register-queue), [`GET /events`](/api/get-events),
diff --git a/web/src/server_events_dispatch.js b/web/src/server_events_dispatch.js
index cbd823c677..ef9951083c 100644
--- a/web/src/server_events_dispatch.js
+++ b/web/src/server_events_dispatch.js
@@ -317,6 +317,10 @@ export function dispatch_normal_event(event) {
                                 if (key === "edit_topic_policy") {
                                     message_live_update.rerender_messages_view();
                                 }
+
+                                if (key === "plan_type") {
+                                    gear_menu.rerender();
+                                }
                             }
                             if (event.data.authentication_methods !== undefined) {
                                 settings_org.populate_auth_methods(
diff --git a/web/tests/dispatch.test.js b/web/tests/dispatch.test.js
index e364755cf3..c67206504f 100644
--- a/web/tests/dispatch.test.js
+++ b/web/tests/dispatch.test.js
@@ -584,6 +584,8 @@ run_test("realm settings", ({override}) => {
     override(realm, "realm_authentication_methods", {Google: {enabled: false, available: true}});
     override(realm, "realm_can_create_public_channel_group", 1);
     override(realm, "realm_direct_message_permission_group", 1);
+    override(realm, "realm_plan_type", 2);
+    override(realm, "realm_upload_quota_mib", 5000);
     override(settings_org, "populate_auth_methods", noop);
     dispatch(event);
     assert_same(realm.realm_create_multiuse_invite_group, 3);
@@ -595,6 +597,8 @@ run_test("realm settings", ({override}) => {
     });
     assert_same(realm.realm_can_create_public_channel_group, 3);
     assert_same(realm.realm_direct_message_permission_group, 3);
+    assert_same(realm.realm_plan_type, 3);
+    assert_same(realm.realm_upload_quota_mib, 50000);
     assert_same(update_stream_privacy_choices_called, true);
 
     event = event_fixtures.realm__update_dict__icon;
diff --git a/web/tests/lib/events.js b/web/tests/lib/events.js
index 1a64127f92..92d40cefb8 100644
--- a/web/tests/lib/events.js
+++ b/web/tests/lib/events.js
@@ -370,6 +370,8 @@ exports.fixtures = {
             },
             can_create_public_channel_group: 3,
             direct_message_permission_group: 3,
+            plan_type: 3,
+            upload_quota_mib: 50000,
         },
     },
 
diff --git a/zerver/actions/realm_settings.py b/zerver/actions/realm_settings.py
index 8541ec1463..0a10c204d1 100644
--- a/zerver/actions/realm_settings.py
+++ b/zerver/actions/realm_settings.py
@@ -28,6 +28,7 @@ from zerver.lib.user_groups import (
     get_group_setting_value_for_api,
     get_group_setting_value_for_audit_log_data,
 )
+from zerver.lib.utils import optional_bytes_to_mib
 from zerver.models import (
     ArchivedAttachment,
     Attachment,
@@ -786,13 +787,15 @@ def do_change_realm_plan_type(
 
     realm.save(update_fields=["_max_invites", "message_visibility_limit"])
 
-    event = {
-        "type": "realm",
-        "op": "update",
-        "property": "plan_type",
-        "value": plan_type,
-        "extra_data": {"upload_quota": realm.upload_quota_bytes()},
-    }
+    event = dict(
+        type="realm",
+        op="update_dict",
+        property="default",
+        data={
+            "plan_type": plan_type,
+            "upload_quota_mib": optional_bytes_to_mib(realm.upload_quota_bytes()),
+        },
+    )
     send_event_on_commit(realm, event, active_user_ids(realm.id))
 
 
diff --git a/zerver/lib/event_schema.py b/zerver/lib/event_schema.py
index f6af8445e3..11dccafdf2 100644
--- a/zerver/lib/event_schema.py
+++ b/zerver/lib/event_schema.py
@@ -889,12 +889,6 @@ realm_linkifiers_event = event_dict_type(
 check_realm_linkifiers = make_checker(realm_linkifiers_event)
 
 
-plan_type_extra_data_type = DictType(
-    required_keys=[
-        ("upload_quota", int),
-    ]
-)
-
 """
 realm/update events are flexible for values;
 we will use a more strict checker to check
@@ -906,10 +900,7 @@ realm_update_event = event_dict_type(
         ("op", Equals("update")),
         ("property", str),
         ("value", value_type),
-    ],
-    optional_keys=[
-        ("extra_data", plan_type_extra_data_type),
-    ],
+    ]
 )
 _check_realm_update = make_checker(realm_update_event)
 
@@ -935,13 +926,6 @@ def check_realm_update(
     assert prop == event["property"]
     value = event["value"]
 
-    if prop == "plan_type":
-        assert isinstance(value, int)
-        assert "extra_data" in event
-        return
-
-    assert "extra_data" not in event
-
     if prop in [
         "new_stream_announcements_stream_id",
         "signup_announcements_stream_id",
@@ -1087,6 +1071,13 @@ group_setting_update_data_type = DictType(
     ],
 )
 
+plan_type_data = DictType(
+    required_keys=[
+        ("plan_type", int),
+        ("upload_quota_mib", OptionalType(int)),
+    ],
+)
+
 update_dict_data = UnionType(
     [
         allow_message_editing_data,
@@ -1097,6 +1088,7 @@ update_dict_data = UnionType(
         message_content_edit_limit_seconds_data,
         night_logo_data,
         group_setting_update_data_type,
+        plan_type_data,
     ]
 )
 
@@ -1133,6 +1125,8 @@ def check_realm_update_dict(
             setting_name in event["data"] for setting_name in Realm.REALM_PERMISSION_GROUP_SETTINGS
         ):
             sub_type = group_setting_update_data_type
+        elif "plan_type" in event["data"]:
+            sub_type = plan_type_data
         else:
             raise AssertionError("unhandled fields in data")
 
diff --git a/zerver/lib/events.py b/zerver/lib/events.py
index 6cfcde88d6..68cfd768b2 100644
--- a/zerver/lib/events.py
+++ b/zerver/lib/events.py
@@ -1279,13 +1279,6 @@ def apply_event(
             field = "realm_" + event["property"]
             state[field] = event["value"]
 
-            if event["property"] == "plan_type":
-                # Then there are some extra fields that also need to be set.
-                state["zulip_plan_is_not_limited"] = event["value"] != Realm.PLAN_TYPE_LIMITED
-                # upload_quota is in bytes, so we need to convert it to MiB.
-                upload_quota_bytes = event["extra_data"]["upload_quota"]
-                state["realm_upload_quota_mib"] = optional_bytes_to_mib(upload_quota_bytes)
-
             if field == "realm_jitsi_server_url":
                 state["jitsi_server_url"] = (
                     state["realm_jitsi_server_url"]
@@ -1363,6 +1356,10 @@ def apply_event(
                         or state["can_create_public_streams"]
                         or state["can_create_web_public_streams"]
                     )
+
+                if key == "plan_type":
+                    # Then there are some extra fields that also need to be set.
+                    state["zulip_plan_is_not_limited"] = value != Realm.PLAN_TYPE_LIMITED
         elif event["op"] == "deactivated":
             # The realm has just been deactivated.  If our request had
             # arrived a moment later, we'd have rendered the
diff --git a/zerver/openapi/zulip.yaml b/zerver/openapi/zulip.yaml
index 489a5190a8..9cd2cd3615 100644
--- a/zerver/openapi/zulip.yaml
+++ b/zerver/openapi/zulip.yaml
@@ -4064,6 +4064,12 @@ paths:
                                 A correct client implementation should convert these
                                 events into the corresponding [realm/update_dict](#realm-update_dict)
                                 event and then process that.
+
+                                **Changes**: Removed `extra_data` optional property in Zulip 10.0
+                                (feature level 306). The `extra_data` used to include an
+                                `upload_quota` field when changed property was `plan_type`. The
+                                server now sends a standard `realm/update_dict` event for plan
+                                changes.
                               properties:
                                 id:
                                   $ref: "#/components/schemas/EventIdSchema"
@@ -4088,19 +4094,6 @@ paths:
                                     - type: string
                                     - type: boolean
                                     - type: integer
-                                extra_data:
-                                  description: |
-                                    Object containing extra data related to the changed
-                                    property.
-                                  type: object
-                                  additionalProperties: false
-                                  properties:
-                                    upload_quota:
-                                      type: integer
-                                      description: |
-                                        Note: Only present if changed property is `plan_type`.
-
-                                        The new upload quota for the Zulip organization.
                               example:
                                 {
                                   "type": "realm",
@@ -4907,6 +4900,17 @@ paths:
 
                                         **Changes**: In Zulip 9.0 (feature level 241), renamed
                                         `signup_notifications_stream_id` to `signup_announcements_stream_id`.
+                                    upload_quota_mib:
+                                      type: integer
+                                      nullable: true
+                                      description: |
+                                        The new upload quota for the Zulip organization.
+
+                                        If `null`, there is no limit.
+
+                                        **Changes**: New in Zulip 10.0 (feature level 306). Previously,
+                                        this was present changed via an `upload_quota` field in `extra_data` property
+                                        of [realm/update](#realm-update) event format for `plan_type` events.
                                     video_chat_provider:
                                       type: integer
                                       description: |
diff --git a/zerver/tests/test_events.py b/zerver/tests/test_events.py
index ff0246ba6b..5ab41b62b4 100644
--- a/zerver/tests/test_events.py
+++ b/zerver/tests/test_events.py
@@ -2772,7 +2772,7 @@ class NormalActionsTest(BaseAction):
             do_change_realm_plan_type(realm, Realm.PLAN_TYPE_LIMITED, acting_user=self.user_profile)
         check_realm_update("events[0]", events[0], "enable_spectator_access")
         check_realm_update_dict("events[1]", events[1])
-        check_realm_update("events[2]", events[2], "plan_type")
+        check_realm_update_dict("events[2]", events[2])
 
         state_data = fetch_initial_state_data(self.user_profile, realm=realm)
         self.assertEqual(state_data["realm_plan_type"], Realm.PLAN_TYPE_LIMITED)