diff --git a/staging/src/k8s.io/apiserver/pkg/storage/value/encrypt/envelope/kmsv2/envelope.go b/staging/src/k8s.io/apiserver/pkg/storage/value/encrypt/envelope/kmsv2/envelope.go
index ae37f178b9e..b18a8484a32 100644
--- a/staging/src/k8s.io/apiserver/pkg/storage/value/encrypt/envelope/kmsv2/envelope.go
+++ b/staging/src/k8s.io/apiserver/pkg/storage/value/encrypt/envelope/kmsv2/envelope.go
@@ -96,8 +96,6 @@ func newEnvelopeTransformerWithClock(envelopeService kmsservice.Service, provide
 
 // TransformFromStorage decrypts data encrypted by this transformer using envelope encryption.
 func (t *envelopeTransformer) TransformFromStorage(ctx context.Context, data []byte, dataCtx value.Context) ([]byte, bool, error) {
-	metrics.RecordArrival(metrics.FromStorageLabel, time.Now())
-
 	// Deserialize the EncryptedObject from the data.
 	encryptedObject, err := t.doDecode(data)
 	if err != nil {
@@ -148,7 +146,6 @@ func (t *envelopeTransformer) TransformFromStorage(ctx context.Context, data []b
 
 // TransformToStorage encrypts data to be written to disk using envelope encryption.
 func (t *envelopeTransformer) TransformToStorage(ctx context.Context, data []byte, dataCtx value.Context) ([]byte, error) {
-	metrics.RecordArrival(metrics.ToStorageLabel, time.Now())
 	newKey, err := generateKey(32)
 	if err != nil {
 		return nil, err
diff --git a/staging/src/k8s.io/apiserver/pkg/storage/value/encrypt/envelope/kmsv2/envelope_test.go b/staging/src/k8s.io/apiserver/pkg/storage/value/encrypt/envelope/kmsv2/envelope_test.go
index 49e0370e755..9c5ea516833 100644
--- a/staging/src/k8s.io/apiserver/pkg/storage/value/encrypt/envelope/kmsv2/envelope_test.go
+++ b/staging/src/k8s.io/apiserver/pkg/storage/value/encrypt/envelope/kmsv2/envelope_test.go
@@ -638,13 +638,11 @@ func TestEnvelopeMetrics(t *testing.T) {
 		},
 	}
 
-	metrics.DekCacheInterArrivals.Reset()
 	metrics.KeyIDHashTotal.Reset()
 	metrics.InvalidKeyIDFromStatusTotal.Reset()
 
 	for _, tt := range testCases {
 		t.Run(tt.desc, func(t *testing.T) {
-			defer metrics.DekCacheInterArrivals.Reset()
 			defer metrics.KeyIDHashTotal.Reset()
 			defer metrics.InvalidKeyIDFromStatusTotal.Reset()
 			ctx := testContext(t)
diff --git a/staging/src/k8s.io/apiserver/pkg/storage/value/encrypt/envelope/metrics/metrics.go b/staging/src/k8s.io/apiserver/pkg/storage/value/encrypt/envelope/metrics/metrics.go
index d7ea043f96c..0ac9b1f313e 100644
--- a/staging/src/k8s.io/apiserver/pkg/storage/value/encrypt/envelope/metrics/metrics.go
+++ b/staging/src/k8s.io/apiserver/pkg/storage/value/encrypt/envelope/metrics/metrics.go
@@ -66,6 +66,7 @@ var (
 	keyIDHashStatusLastTimestampSecondsMetricLabels *lru.Cache
 	cacheSize                                       int = 10
 
+	// This metric is only used for KMS v1 API.
 	dekCacheFillPercent = metrics.NewGauge(
 		&metrics.GaugeOpts{
 			Namespace:      namespace,
@@ -75,8 +76,9 @@ var (
 			StabilityLevel: metrics.ALPHA,
 		},
 	)
-	// These metrics are made public to be used by unit tests.
-	DekCacheInterArrivals = metrics.NewHistogramVec(
+
+	// This metric is only used for KMS v1 API.
+	dekCacheInterArrivals = metrics.NewHistogramVec(
 		&metrics.HistogramOpts{
 			Namespace:      namespace,
 			Subsystem:      subsystem,
@@ -88,6 +90,7 @@ var (
 		[]string{"transformation_type"},
 	)
 
+	// These metrics are made public to be used by unit tests.
 	KMSOperationsLatencyMetric = metrics.NewHistogramVec(
 		&metrics.HistogramOpts{
 			Namespace:      namespace,
@@ -193,7 +196,7 @@ func RegisterMetrics() {
 			},
 		}
 		legacyregistry.MustRegister(dekCacheFillPercent)
-		legacyregistry.MustRegister(DekCacheInterArrivals)
+		legacyregistry.MustRegister(dekCacheInterArrivals)
 		legacyregistry.MustRegister(KeyIDHashTotal)
 		legacyregistry.MustRegister(KeyIDHashLastTimestampSeconds)
 		legacyregistry.MustRegister(KeyIDHashStatusLastTimestampSeconds)
@@ -234,7 +237,7 @@ func RecordArrival(transformationType string, start time.Time) {
 		if lastFromStorage.IsZero() {
 			lastFromStorage = start
 		}
-		DekCacheInterArrivals.WithLabelValues(transformationType).Observe(start.Sub(lastFromStorage).Seconds())
+		dekCacheInterArrivals.WithLabelValues(transformationType).Observe(start.Sub(lastFromStorage).Seconds())
 		lastFromStorage = start
 	case ToStorageLabel:
 		lockLastToStorage.Lock()
@@ -243,7 +246,7 @@ func RecordArrival(transformationType string, start time.Time) {
 		if lastToStorage.IsZero() {
 			lastToStorage = start
 		}
-		DekCacheInterArrivals.WithLabelValues(transformationType).Observe(start.Sub(lastToStorage).Seconds())
+		dekCacheInterArrivals.WithLabelValues(transformationType).Observe(start.Sub(lastToStorage).Seconds())
 		lastToStorage = start
 	}
 }