diff --git a/app/vmstorage/main.go b/app/vmstorage/main.go
index 48e76d87a0..fe1126ef34 100644
--- a/app/vmstorage/main.go
+++ b/app/vmstorage/main.go
@@ -329,6 +329,9 @@ func registerStorageMetrics(strg *storage.Storage) {
 	metrics.NewGauge(`vm_index_blocks_with_metric_ids_incorrect_order_total`, func() float64 {
 		return float64(idbm().IndexBlocksWithMetricIDsIncorrectOrder)
 	})
+	metrics.NewGauge(`vm_composite_index_min_timestamp`, func() float64 {
+		return float64(idbm().MinTimestampForCompositeIndex) / 1e3
+	})
 
 	metrics.NewGauge(`vm_assisted_merges_total{type="storage/small"}`, func() float64 {
 		return float64(tm().SmallAssistedMerges)
diff --git a/lib/storage/index_db.go b/lib/storage/index_db.go
index 5af72db730..f52895d562 100644
--- a/lib/storage/index_db.go
+++ b/lib/storage/index_db.go
@@ -203,6 +203,8 @@ type IndexDBMetrics struct {
 	IndexBlocksWithMetricIDsProcessed      uint64
 	IndexBlocksWithMetricIDsIncorrectOrder uint64
 
+	MinTimestampForCompositeIndex uint64
+
 	mergeset.TableMetrics
 }
 
@@ -244,6 +246,8 @@ func (db *indexDB) UpdateMetrics(m *IndexDBMetrics) {
 	m.IndexBlocksWithMetricIDsProcessed = atomic.LoadUint64(&indexBlocksWithMetricIDsProcessed)
 	m.IndexBlocksWithMetricIDsIncorrectOrder = atomic.LoadUint64(&indexBlocksWithMetricIDsIncorrectOrder)
 
+	m.MinTimestampForCompositeIndex = uint64(db.minTimestampForCompositeIndex)
+
 	db.tb.UpdateMetrics(&m.TableMetrics)
 	db.doExtDB(func(extDB *indexDB) {
 		extDB.tb.UpdateMetrics(&m.TableMetrics)