diff --git a/pkg/compact/compact.go b/pkg/compact/compact.go
index 0b85069010..fbeb9f3b0e 100644
--- a/pkg/compact/compact.go
+++ b/pkg/compact/compact.go
@@ -101,7 +101,7 @@ func newSyncerMetrics(reg prometheus.Registerer) *syncerMetrics {
 	m.garbageCollectionDuration = prometheus.NewHistogram(prometheus.HistogramOpts{
 		Name:    "thanos_compact_garbage_collection_duration_seconds",
 		Help:    "Time it took to perform garbage collection iteration.",
-		Buckets: prometheus.ExponentialBuckets(0.05, 2.5, 12),
+		Buckets: prometheus.ExponentialBuckets(0.001, 2, 15),
 	})
 
 	m.compactions = prometheus.NewCounterVec(prometheus.CounterOpts{
diff --git a/pkg/store/gate.go b/pkg/store/gate.go
index 83dd28b6ab..1a8fe69108 100644
--- a/pkg/store/gate.go
+++ b/pkg/store/gate.go
@@ -26,7 +26,7 @@ func NewGate(maxConcurrent int, reg prometheus.Registerer) *Gate {
 		gateTiming: prometheus.NewHistogram(prometheus.HistogramOpts{
 			Name:    "gate_duration_seconds",
 			Help:    "How many seconds it took for queries to wait at the gate.",
-			Buckets: prometheus.ExponentialBuckets(0.001, 2, 15),
+			Buckets: prometheus.ExponentialBuckets(0.1, 2, 15),
 		}),
 	}