diff --git a/src/config/ConfigOptions.ts b/src/config/ConfigOptions.ts
index 75bd7cbb..40b2342b 100644
--- a/src/config/ConfigOptions.ts
+++ b/src/config/ConfigOptions.ts
@@ -114,16 +114,12 @@ export interface ConfigOptions {
      * when someone leaves a call.
      */
     wait_for_key_rotation_ms?: number;
-    /** @deprecated use wait_for_key_rotation_ms instead */
-    key_rotation_on_leave_delay?: number;
 
     /**
      * The duration (in milliseconds) after the most recent keep-alive (delayed leave event restart)
      * that the server waits before sending the leave MatrixRTC membership event.
      */
     delayed_leave_event_delay_ms?: number;
-    /** @deprecated use delayed_leave_event_delay_ms instead */
-    membership_server_side_expiry_timeout?: number;
 
     /**
      * The time (in milliseconds) after which a we consider a delayed event restart http request to have failed.
@@ -141,8 +137,6 @@ export interface ConfigOptions {
      * messages to the server by restarting the timer for the delayed leave event.
      */
     delayed_leave_event_restart_ms?: number;
-    /** @deprecated use delayed_leave_event_restart_ms instead */
-    membership_keep_alive_period?: number;
 
     /**
      * How long we wait before retrying after a network error on any of the requests.
diff --git a/src/rtcSessionHelpers.ts b/src/rtcSessionHelpers.ts
index a193b8e5..be5eedf1 100644
--- a/src/rtcSessionHelpers.ts
+++ b/src/rtcSessionHelpers.ts
@@ -123,17 +123,13 @@ export async function enterRTCSession(
         useLegacyMemberEvents: !useDeviceSessionMemberEvents,
       }),
       delayedLeaveEventRestartMs:
-        matrixRtcSessionConfig?.delayed_leave_event_restart_ms ??
-        matrixRtcSessionConfig?.membership_keep_alive_period,
+        matrixRtcSessionConfig?.delayed_leave_event_restart_ms,
       delayedLeaveEventDelayMs:
-        matrixRtcSessionConfig?.delayed_leave_event_delay_ms ??
-        matrixRtcSessionConfig?.membership_server_side_expiry_timeout,
+        matrixRtcSessionConfig?.delayed_leave_event_delay_ms,
       delayedLeaveEventRestartLocalTimeoutMs:
         matrixRtcSessionConfig?.delayed_leave_event_restart_local_timeout_ms,
       networkErrorRetryMs: matrixRtcSessionConfig?.network_error_retry_ms,
-      makeKeyDelay:
-        matrixRtcSessionConfig?.wait_for_key_rotation_ms ??
-        matrixRtcSessionConfig?.key_rotation_on_leave_delay,
+      makeKeyDelay: matrixRtcSessionConfig?.wait_for_key_rotation_ms,
       membershipEventExpiryMs:
         matrixRtcSessionConfig?.membership_event_expiry_ms,
       useExperimentalToDeviceTransport,