diff --git a/CHANGELOG.md b/CHANGELOG.md
index 734a2241218..97a35d8cb49 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,14 @@
 * [FEATURE] Introduced `ruler.for-grace-period`, Minimum duration between alert and restored "for" state. This is maintained only for alerts with configured "for" time greater than grace period. #2783
 * [FEATURE] Introduced `ruler.for-resend-delay`, Minimum amount of time to wait before resending an alert to Alertmanager. #2783
 * [ENHANCEMENT] Experimental: Querier can now optionally query secondary store. This is specified by using `-querier.second-store-engine` option, with values `chunks` or `tsdb`. Standard configuration options for this store are used. Additionally, this querying can be configured to happen only for queries that need data older than `-querier.use-second-store-before-time`. Default value of zero will always query secondary store. #2747
+* [ENHANCEMENT] Ruler: Added the following metrics: #2786
+  * `cortex_prometheus_notifications_latency_seconds`
+  * `cortex_prometheus_notifications_errors_total`
+  * `cortex_prometheus_notifications_sent_total`
+  * `cortex_prometheus_notifications_dropped_total`
+  * `cortex_prometheus_notifications_queue_length`
+  * `cortex_prometheus_notifications_queue_capacity`
+  * `cortex_prometheus_notifications_alertmanagers_discovered`
 * [BUGFIX] Fixed a bug in the index intersect code causing storage to return more chunks/series than required. #2796
 * [BUGFIX] Fixed the number of reported keys in the background cache queue. #2764
 * [BUGFIX] Fix race in processing of headers in sharded queries. #2762
diff --git a/pkg/ruler/ruler.go b/pkg/ruler/ruler.go
index 6bc0fb3ee60..341be3a36ea 100644
--- a/pkg/ruler/ruler.go
+++ b/pkg/ruler/ruler.go
@@ -330,8 +330,11 @@ func (r *Ruler) getOrCreateNotifier(userID string) (*notifier.Manager, error) {
 		return n.notifier, nil
 	}
 
+	reg := prometheus.WrapRegistererWith(prometheus.Labels{"user": userID}, r.registry)
+	reg = prometheus.WrapRegistererWithPrefix("cortex_", reg)
 	n = newRulerNotifier(&notifier.Options{
 		QueueCapacity: r.cfg.NotificationQueueCapacity,
+		Registerer:    reg,
 		Do: func(ctx context.Context, client *http.Client, req *http.Request) (*http.Response, error) {
 			// Note: The passed-in context comes from the Prometheus notifier
 			// and does *not* contain the userID. So it needs to be added to the context
diff --git a/pkg/ruler/ruler_test.go b/pkg/ruler/ruler_test.go
index 27e5f637e4a..d69b58be7de 100644
--- a/pkg/ruler/ruler_test.go
+++ b/pkg/ruler/ruler_test.go
@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"os"
+	"strings"
 	"sync"
 	"testing"
 	"time"
@@ -13,6 +14,7 @@ import (
 	"github.com/go-kit/kit/log"
 	"github.com/go-kit/kit/log/level"
 	"github.com/prometheus/client_golang/prometheus"
+	prom_testutil "github.com/prometheus/client_golang/prometheus/testutil"
 	"github.com/prometheus/prometheus/notifier"
 	"github.com/prometheus/prometheus/pkg/labels"
 	"github.com/prometheus/prometheus/promql"
@@ -136,6 +138,13 @@ func TestNotifierSendsUserIDHeader(t *testing.T) {
 	})
 
 	wg.Wait()
+
+	// Ensure we have metrics in the notifier.
+	assert.NoError(t, prom_testutil.GatherAndCompare(r.registry.(*prometheus.Registry), strings.NewReader(`
+		# HELP cortex_prometheus_notifications_dropped_total Total number of alerts dropped due to errors when sending to Alertmanager.
+		# TYPE cortex_prometheus_notifications_dropped_total counter
+		cortex_prometheus_notifications_dropped_total{user="1"} 0
+	`), "cortex_prometheus_notifications_dropped_total"))
 }
 
 func TestRuler_Rules(t *testing.T) {