diff --git a/sytest-whitelist b/sytest-whitelist
index f11cd96bf..7d26c610e 100644
--- a/sytest-whitelist
+++ b/sytest-whitelist
@@ -589,3 +589,4 @@ Remote user can backfill in a room with version 9
 Can reject invites over federation for rooms with version 9
 Can receive redactions from regular users over federation in room version 9
 Forward extremities remain so even after the next events are populated as outliers
+If a device list update goes missing, the server resyncs on the next one