diff --git a/app/victoria-metrics/self_scraper.go b/app/victoria-metrics/self_scraper.go
index cc405884d..f1e7a4d3a 100644
--- a/app/victoria-metrics/self_scraper.go
+++ b/app/victoria-metrics/self_scraper.go
@@ -10,7 +10,7 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/decimal"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/prometheus"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/storage"
 )
@@ -48,7 +48,7 @@ func selfScraper(scrapeInterval time.Duration) {
 	var bb bytesutil.ByteBuffer
 	var rows prometheus.Rows
 	var mrs []storage.MetricRow
-	var labels []prompb.Label
+	var labels []prompbmarshal.Label
 	t := time.NewTicker(scrapeInterval)
 	f := func(currentTime time.Time, sendStaleMarkers bool) {
 		currentTimestamp := currentTime.UnixNano() / 1e6
@@ -99,11 +99,11 @@ func selfScraper(scrapeInterval time.Duration) {
 	}
 }
 
-func addLabel(dst []prompb.Label, key, value string) []prompb.Label {
+func addLabel(dst []prompbmarshal.Label, key, value string) []prompbmarshal.Label {
 	if len(dst) < cap(dst) {
 		dst = dst[:len(dst)+1]
 	} else {
-		dst = append(dst, prompb.Label{})
+		dst = append(dst, prompbmarshal.Label{})
 	}
 	lb := &dst[len(dst)-1]
 	lb.Name = key
diff --git a/app/vmctl/vm_native_test.go b/app/vmctl/vm_native_test.go
index fa7bf4b68..f94ca7cb2 100644
--- a/app/vmctl/vm_native_test.go
+++ b/app/vmctl/vm_native_test.go
@@ -17,7 +17,7 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmctl/vm"
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmselect/promql"
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmstorage"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/storage"
 )
 
@@ -214,15 +214,15 @@ func processFlags() {
 func fillStorage(series []vm.TimeSeries) error {
 	var mrs []storage.MetricRow
 	for _, series := range series {
-		var labels []prompb.Label
+		var labels []prompbmarshal.Label
 		for _, lp := range series.LabelPairs {
-			labels = append(labels, prompb.Label{
+			labels = append(labels, prompbmarshal.Label{
 				Name:  lp.Name,
 				Value: lp.Value,
 			})
 		}
 		if series.Name != "" {
-			labels = append(labels, prompb.Label{
+			labels = append(labels, prompbmarshal.Label{
 				Name:  "__name__",
 				Value: series.Name,
 			})
diff --git a/app/vminsert/common/insert_ctx.go b/app/vminsert/common/insert_ctx.go
index f7a06960b..d7f89b9c6 100644
--- a/app/vminsert/common/insert_ctx.go
+++ b/app/vminsert/common/insert_ctx.go
@@ -8,7 +8,7 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmstorage"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/slicesutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/storage"
 )
@@ -30,7 +30,7 @@ type InsertCtx struct {
 func (ctx *InsertCtx) Reset(rowsLen int) {
 	labels := ctx.Labels
 	for i := range labels {
-		labels[i] = prompb.Label{}
+		labels[i] = prompbmarshal.Label{}
 	}
 	ctx.Labels = labels[:0]
 
@@ -51,7 +51,7 @@ func cleanMetricRow(mr *storage.MetricRow) {
 	mr.MetricNameRaw = nil
 }
 
-func (ctx *InsertCtx) marshalMetricNameRaw(prefix []byte, labels []prompb.Label) []byte {
+func (ctx *InsertCtx) marshalMetricNameRaw(prefix []byte, labels []prompbmarshal.Label) []byte {
 	start := len(ctx.metricNamesBuf)
 	ctx.metricNamesBuf = append(ctx.metricNamesBuf, prefix...)
 	ctx.metricNamesBuf = storage.MarshalMetricNameRaw(ctx.metricNamesBuf, labels)
@@ -60,7 +60,7 @@ func (ctx *InsertCtx) marshalMetricNameRaw(prefix []byte, labels []prompb.Label)
 }
 
 // WriteDataPoint writes (timestamp, value) with the given prefix and labels into ctx buffer.
-func (ctx *InsertCtx) WriteDataPoint(prefix []byte, labels []prompb.Label, timestamp int64, value float64) error {
+func (ctx *InsertCtx) WriteDataPoint(prefix []byte, labels []prompbmarshal.Label, timestamp int64, value float64) error {
 	metricNameRaw := ctx.marshalMetricNameRaw(prefix, labels)
 	return ctx.addRow(metricNameRaw, timestamp, value)
 }
@@ -68,7 +68,7 @@ func (ctx *InsertCtx) WriteDataPoint(prefix []byte, labels []prompb.Label, times
 // WriteDataPointExt writes (timestamp, value) with the given metricNameRaw and labels into ctx buffer.
 //
 // It returns metricNameRaw for the given labels if len(metricNameRaw) == 0.
-func (ctx *InsertCtx) WriteDataPointExt(metricNameRaw []byte, labels []prompb.Label, timestamp int64, value float64) ([]byte, error) {
+func (ctx *InsertCtx) WriteDataPointExt(metricNameRaw []byte, labels []prompbmarshal.Label, timestamp int64, value float64) ([]byte, error) {
 	if len(metricNameRaw) == 0 {
 		metricNameRaw = ctx.marshalMetricNameRaw(nil, labels)
 	}
@@ -106,7 +106,7 @@ func (ctx *InsertCtx) AddLabelBytes(name, value []byte) {
 		// Do not skip labels with empty name, since they are equal to __name__.
 		return
 	}
-	ctx.Labels = append(ctx.Labels, prompb.Label{
+	ctx.Labels = append(ctx.Labels, prompbmarshal.Label{
 		// Do not copy name and value contents for performance reasons.
 		// This reduces GC overhead on the number of objects and allocations.
 		Name:  bytesutil.ToUnsafeString(name),
@@ -124,7 +124,7 @@ func (ctx *InsertCtx) AddLabel(name, value string) {
 		// Do not skip labels with empty name, since they are equal to __name__.
 		return
 	}
-	ctx.Labels = append(ctx.Labels, prompb.Label{
+	ctx.Labels = append(ctx.Labels, prompbmarshal.Label{
 		// Do not copy name and value contents for performance reasons.
 		// This reduces GC overhead on the number of objects and allocations.
 		Name:  name,
diff --git a/app/vminsert/common/sort_labels.go b/app/vminsert/common/sort_labels.go
index 16fa88cc0..5ca933708 100644
--- a/app/vminsert/common/sort_labels.go
+++ b/app/vminsert/common/sort_labels.go
@@ -4,7 +4,7 @@ import (
 	"flag"
 	"sort"
 
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
 )
 
 var sortLabels = flag.Bool("sortLabels", false, `Whether to sort labels for incoming samples before writing them to storage. `+
@@ -19,7 +19,7 @@ func (ctx *InsertCtx) SortLabelsIfNeeded() {
 	}
 }
 
-type sortedLabels []prompb.Label
+type sortedLabels []prompbmarshal.Label
 
 func (sl *sortedLabels) Len() int { return len(*sl) }
 func (sl *sortedLabels) Less(i, j int) bool {
diff --git a/app/vminsert/influx/request_handler.go b/app/vminsert/influx/request_handler.go
index 632501814..2ad0e4e94 100644
--- a/app/vminsert/influx/request_handler.go
+++ b/app/vminsert/influx/request_handler.go
@@ -9,7 +9,6 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vminsert/common"
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vminsert/relabel"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
 	parserCommon "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
 	parser "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/influx"
@@ -150,7 +149,7 @@ type pushCtx struct {
 	Common         common.InsertCtx
 	metricNameBuf  []byte
 	metricGroupBuf []byte
-	originLabels   []prompb.Label
+	originLabels   []prompbmarshal.Label
 }
 
 func (ctx *pushCtx) reset() {
@@ -160,7 +159,7 @@ func (ctx *pushCtx) reset() {
 
 	originLabels := ctx.originLabels
 	for i := range originLabels {
-		originLabels[i] = prompb.Label{}
+		originLabels[i] = prompbmarshal.Label{}
 	}
 	ctx.originLabels = originLabels[:0]
 }
diff --git a/app/vminsert/relabel/relabel.go b/app/vminsert/relabel/relabel.go
index 17a969445..444e05d0b 100644
--- a/app/vminsert/relabel/relabel.go
+++ b/app/vminsert/relabel/relabel.go
@@ -8,7 +8,6 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/fasttime"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/procutil"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/promrelabel"
 	"github.com/VictoriaMetrics/metrics"
@@ -108,7 +107,7 @@ func (ctx *Ctx) Reset() {
 // ApplyRelabeling applies relabeling to the given labels and returns the result.
 //
 // The returned labels are valid until the next call to ApplyRelabeling.
-func (ctx *Ctx) ApplyRelabeling(labels []prompb.Label) []prompb.Label {
+func (ctx *Ctx) ApplyRelabeling(labels []prompbmarshal.Label) []prompbmarshal.Label {
 	pcs := pcsGlobal.Load()
 	if pcs.Len() == 0 && !*usePromCompatibleNaming {
 		// There are no relabeling rules.
@@ -159,7 +158,7 @@ func (ctx *Ctx) ApplyRelabeling(labels []prompb.Label) []prompb.Label {
 			name = ""
 		}
 		value := label.Value
-		dst = append(dst, prompb.Label{
+		dst = append(dst, prompbmarshal.Label{
 			Name:  name,
 			Value: value,
 		})
diff --git a/app/vmselect/graphite/tags_api.go b/app/vmselect/graphite/tags_api.go
index d558388a0..393478d69 100644
--- a/app/vmselect/graphite/tags_api.go
+++ b/app/vmselect/graphite/tags_api.go
@@ -14,7 +14,7 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vmstorage"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bufferedwriter"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/httputils"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
 	graphiteparser "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/graphite"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/storage"
 	"github.com/VictoriaMetrics/metrics"
@@ -95,7 +95,7 @@ func registerMetrics(startTime time.Time, w http.ResponseWriter, r *http.Request
 	_ = deadline // TODO: use the deadline as in the cluster branch
 	paths := r.Form["path"]
 	var row graphiteparser.Row
-	var labels []prompb.Label
+	var labels []prompbmarshal.Label
 	var b []byte
 	var tagsPool []graphiteparser.Tag
 	mrs := make([]storage.MetricRow, len(paths))
@@ -122,12 +122,12 @@ func registerMetrics(startTime time.Time, w http.ResponseWriter, r *http.Request
 		canonicalPaths[i] = string(b)
 
 		// Convert parsed metric and tags to labels.
-		labels = append(labels[:0], prompb.Label{
+		labels = append(labels[:0], prompbmarshal.Label{
 			Name:  "__name__",
 			Value: row.Metric,
 		})
 		for _, tag := range row.Tags {
-			labels = append(labels, prompb.Label{
+			labels = append(labels, prompbmarshal.Label{
 				Name:  tag.Key,
 				Value: tag.Value,
 			})
diff --git a/lib/storage/metric_name.go b/lib/storage/metric_name.go
index bbf262c3e..1890e9cbc 100644
--- a/lib/storage/metric_name.go
+++ b/lib/storage/metric_name.go
@@ -14,7 +14,7 @@ import (
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/encoding"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
+	"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/slicesutil"
 )
 
@@ -506,7 +506,7 @@ func SetMaxLabelsPerTimeseries(maxLabels int) {
 // MarshalMetricNameRaw marshals labels to dst and returns the result.
 //
 // The result must be unmarshaled with MetricName.UnmarshalRaw
-func MarshalMetricNameRaw(dst []byte, labels []prompb.Label) []byte {
+func MarshalMetricNameRaw(dst []byte, labels []prompbmarshal.Label) []byte {
 	// Calculate the required space for dst.
 	dstLen := len(dst)
 	dstSize := dstLen
@@ -564,7 +564,7 @@ var (
 	TooLongLabelValues atomic.Uint64
 )
 
-func trackDroppedLabels(labels, droppedLabels []prompb.Label) {
+func trackDroppedLabels(labels, droppedLabels []prompbmarshal.Label) {
 	MetricsWithDroppedLabels.Add(1)
 	select {
 	case <-droppedLabelsLogTicker.C:
@@ -577,7 +577,7 @@ func trackDroppedLabels(labels, droppedLabels []prompb.Label) {
 	}
 }
 
-func trackTruncatedLabels(labels []prompb.Label, truncated *prompb.Label) {
+func trackTruncatedLabels(labels []prompbmarshal.Label, truncated *prompbmarshal.Label) {
 	TooLongLabelValues.Add(1)
 	select {
 	case <-truncatedLabelsLogTicker.C:
@@ -595,8 +595,8 @@ var (
 	truncatedLabelsLogTicker = time.NewTicker(5 * time.Second)
 )
 
-func labelsToString(labels []prompb.Label) string {
-	labelsCopy := append([]prompb.Label{}, labels...)
+func labelsToString(labels []prompbmarshal.Label) string {
+	labelsCopy := append([]prompbmarshal.Label{}, labels...)
 	sort.Slice(labelsCopy, func(i, j int) bool {
 		return string(labelsCopy[i].Name) < string(labelsCopy[j].Name)
 	})