diff --git a/info/v1/test/datagen.go b/info/v1/test/datagen.go
index 24431692..94f5e921 100644
--- a/info/v1/test/datagen.go
+++ b/info/v1/test/datagen.go
@@ -44,6 +44,8 @@ func GenerateRandomStats(numStats, numCores int, duration time.Duration) []*info
 		stats.Cpu.Usage.User = stats.Cpu.Usage.Total
 		stats.Cpu.Usage.System = 0
 		stats.Memory.Usage = uint64(rand.Int63n(4096))
+    stats.Memory.Cache = uint64(rand.Int63n(4096))
+    stats.Memory.RSS = uint64(rand.Int63n(4096))
 		ret[i] = stats
 	}
 	return ret
diff --git a/metrics/prometheus.go b/metrics/prometheus.go
index 89fb91f5..adce5101 100644
--- a/metrics/prometheus.go
+++ b/metrics/prometheus.go
@@ -136,7 +136,7 @@ func NewPrometheusCollector(infoProvider infoProvider, f ContainerNameToLabelsFu
 				},
 			}, {
 				name:      "container_memory_rss",
-				help:      "Size of RSS in bytes",
+				help:      "Size of RSS in bytes.",
 				valueType: prometheus.GaugeValue,
 				getValues: func(s *info.ContainerStats) metricValues {
 					return metricValues{{value: float64(s.Memory.RSS)}}
diff --git a/metrics/prometheus_test.go b/metrics/prometheus_test.go
index 5410c8d4..7d6dbd48 100644
--- a/metrics/prometheus_test.go
+++ b/metrics/prometheus_test.go
@@ -85,6 +85,8 @@ func (p testSubcontainersInfoProvider) SubcontainersInfo(string, *info.Container
 							Pgfault:    12,
 							Pgmajfault: 13,
 						},
+            Cache: 14,
+            RSS:   15,
 					},
 					Network: info.NetworkStats{
 						InterfaceStats: info.InterfaceStats{
diff --git a/metrics/testdata/prometheus_metrics b/metrics/testdata/prometheus_metrics
index 18390c20..40e4ca0d 100644
--- a/metrics/testdata/prometheus_metrics
+++ b/metrics/testdata/prometheus_metrics
@@ -68,6 +68,9 @@ container_fs_writes_total{device="sda2",foo_env="prod",foo_label="bar",id="testc
 # HELP container_last_seen Last time a container was seen by the exporter
 # TYPE container_last_seen gauge
 container_last_seen{foo_env="prod",foo_label="bar",id="testcontainer",image="test",name="testcontaineralias",zone_name="hello"} 1.426203694e+09
+# HELP container_memory_cache Number of bytes of page cache memory.
+# TYPE container_memory_cache gauge
+container_memory_cache{foo_env="prod",foo_label="bar",id="testcontainer",image="test",name="testcontaineralias",zone_name="hello"} 14
 # HELP container_memory_failcnt Number of memory usage hits limits
 # TYPE container_memory_failcnt counter
 container_memory_failcnt{foo_env="prod",foo_label="bar",id="testcontainer",image="test",name="testcontaineralias",zone_name="hello"} 0
@@ -77,6 +80,9 @@ container_memory_failures_total{foo_env="prod",foo_label="bar",id="testcontainer
 container_memory_failures_total{foo_env="prod",foo_label="bar",id="testcontainer",image="test",name="testcontaineralias",scope="container",type="pgmajfault",zone_name="hello"} 11
 container_memory_failures_total{foo_env="prod",foo_label="bar",id="testcontainer",image="test",name="testcontaineralias",scope="hierarchy",type="pgfault",zone_name="hello"} 12
 container_memory_failures_total{foo_env="prod",foo_label="bar",id="testcontainer",image="test",name="testcontaineralias",scope="hierarchy",type="pgmajfault",zone_name="hello"} 13
+# HELP container_memory_rss Size of RSS in bytes.
+# TYPE container_memory_rss gauge
+container_memory_rss{foo_env="prod",foo_label="bar",id="testcontainer",image="test",name="testcontaineralias",zone_name="hello"} 15
 # HELP container_memory_usage_bytes Current memory usage in bytes.
 # TYPE container_memory_usage_bytes gauge
 container_memory_usage_bytes{foo_env="prod",foo_label="bar",id="testcontainer",image="test",name="testcontaineralias",zone_name="hello"} 8