diff --git a/discovery/consul/consul.go b/discovery/consul/consul.go
index 773e82236..ccc09b072 100644
--- a/discovery/consul/consul.go
+++ b/discovery/consul/consul.go
@@ -75,9 +75,10 @@ var (
 		})
 	rpcDuration = prometheus.NewSummaryVec(
 		prometheus.SummaryOpts{
-			Namespace: namespace,
-			Name:      "sd_consul_rpc_duration_seconds",
-			Help:      "The duration of a Consul RPC call in seconds.",
+			Namespace:  namespace,
+			Name:       "sd_consul_rpc_duration_seconds",
+			Help:       "The duration of a Consul RPC call in seconds.",
+			Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001},
 		},
 		[]string{"endpoint", "call"},
 	)
diff --git a/discovery/file/file.go b/discovery/file/file.go
index be7cb698a..c1cfd74d9 100644
--- a/discovery/file/file.go
+++ b/discovery/file/file.go
@@ -135,8 +135,9 @@ func NewTimestampCollector() *TimestampCollector {
 var (
 	fileSDScanDuration = prometheus.NewSummary(
 		prometheus.SummaryOpts{
-			Name: "prometheus_sd_file_scan_duration_seconds",
-			Help: "The duration of the File-SD scan in seconds.",
+			Name:       "prometheus_sd_file_scan_duration_seconds",
+			Help:       "The duration of the File-SD scan in seconds.",
+			Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001},
 		})
 	fileSDReadErrorsCount = prometheus.NewCounter(
 		prometheus.CounterOpts{
diff --git a/discovery/refresh/refresh.go b/discovery/refresh/refresh.go
index 4e53e258c..ebc99e2e0 100644
--- a/discovery/refresh/refresh.go
+++ b/discovery/refresh/refresh.go
@@ -34,8 +34,9 @@ var (
 	)
 	duration = prometheus.NewSummaryVec(
 		prometheus.SummaryOpts{
-			Name: "prometheus_sd_refresh_duration_seconds",
-			Help: "The duration of a refresh in seconds for the given SD mechanism.",
+			Name:       "prometheus_sd_refresh_duration_seconds",
+			Help:       "The duration of a refresh in seconds for the given SD mechanism.",
+			Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001},
 		},
 		[]string{"mechanism"},
 	)
diff --git a/notifier/notifier.go b/notifier/notifier.go
index 499ee4e77..444199eff 100644
--- a/notifier/notifier.go
+++ b/notifier/notifier.go
@@ -146,10 +146,11 @@ type alertMetrics struct {
 func newAlertMetrics(r prometheus.Registerer, queueCap int, queueLen, alertmanagersDiscovered func() float64) *alertMetrics {
 	m := &alertMetrics{
 		latency: prometheus.NewSummaryVec(prometheus.SummaryOpts{
-			Namespace: namespace,
-			Subsystem: subsystem,
-			Name:      "latency_seconds",
-			Help:      "Latency quantiles for sending alert notifications.",
+			Namespace:  namespace,
+			Subsystem:  subsystem,
+			Name:       "latency_seconds",
+			Help:       "Latency quantiles for sending alert notifications.",
+			Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001},
 		},
 			[]string{alertmanagerLabel},
 		),
diff --git a/promql/engine.go b/promql/engine.go
index 4b178c6db..ad40ff80a 100644
--- a/promql/engine.go
+++ b/promql/engine.go
@@ -243,6 +243,7 @@ func NewEngine(opts EngineOpts) *Engine {
 			Name:        "query_duration_seconds",
 			Help:        "Query timings",
 			ConstLabels: prometheus.Labels{"slice": "queue_time"},
+			Objectives:  map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001},
 		}),
 		queryPrepareTime: prometheus.NewSummary(prometheus.SummaryOpts{
 			Namespace:   namespace,
@@ -250,6 +251,7 @@ func NewEngine(opts EngineOpts) *Engine {
 			Name:        "query_duration_seconds",
 			Help:        "Query timings",
 			ConstLabels: prometheus.Labels{"slice": "prepare_time"},
+			Objectives:  map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001},
 		}),
 		queryInnerEval: prometheus.NewSummary(prometheus.SummaryOpts{
 			Namespace:   namespace,
@@ -257,6 +259,7 @@ func NewEngine(opts EngineOpts) *Engine {
 			Name:        "query_duration_seconds",
 			Help:        "Query timings",
 			ConstLabels: prometheus.Labels{"slice": "inner_eval"},
+			Objectives:  map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001},
 		}),
 		queryResultSort: prometheus.NewSummary(prometheus.SummaryOpts{
 			Namespace:   namespace,
@@ -264,6 +267,7 @@ func NewEngine(opts EngineOpts) *Engine {
 			Name:        "query_duration_seconds",
 			Help:        "Query timings",
 			ConstLabels: prometheus.Labels{"slice": "result_sort"},
+			Objectives:  map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001},
 		}),
 	}
 	metrics.maxConcurrentQueries.Set(float64(opts.MaxConcurrent))
diff --git a/rules/manager.go b/rules/manager.go
index 51da38919..e13e06bd7 100644
--- a/rules/manager.go
+++ b/rules/manager.go
@@ -79,9 +79,10 @@ func NewGroupMetrics(reg prometheus.Registerer) *Metrics {
 	m := &Metrics{
 		evalDuration: prometheus.NewSummary(
 			prometheus.SummaryOpts{
-				Namespace: namespace,
-				Name:      "rule_evaluation_duration_seconds",
-				Help:      "The duration for a rule to execute.",
+				Namespace:  namespace,
+				Name:       "rule_evaluation_duration_seconds",
+				Help:       "The duration for a rule to execute.",
+				Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001},
 			}),
 		evalFailures: prometheus.NewCounter(
 			prometheus.CounterOpts{