diff --git a/server/etcdmain/help.go b/server/etcdmain/help.go
index 1fd278ba9a10..03e81cc8dba7 100644
--- a/server/etcdmain/help.go
+++ b/server/etcdmain/help.go
@@ -268,6 +268,8 @@ Experimental feature:
     Enable persisting remainingTTL to prevent indefinite auto-renewal of long lived leases. Always enabled in v3.6. Should be used to ensure smooth upgrade from v3.5 clusters with this feature enabled. Requires experimental-enable-lease-checkpoint to be enabled.
   --experimental-compaction-batch-limit 1000
     ExperimentalCompactionBatchLimit sets the maximum revisions deleted in each compaction batch.
+  --experimental-compaction-sleep-interval '10ms'
+    ExperimentalCompactionSleepInterval sets the sleep interval between each compaction batch.
   --experimental-peer-skip-client-san-verification 'false'
     Skip verification of SAN field in client certificate for peer connections.
   --experimental-watch-progress-notify-interval '10m'