diff --git a/chart/templates/prometheus.yaml b/chart/templates/prometheus.yaml
index 33e826ad5..eddffbcfb 100644
--- a/chart/templates/prometheus.yaml
+++ b/chart/templates/prometheus.yaml
@@ -90,7 +90,7 @@ spec:
         imagePullPolicy: {{.ImagePullPolicy}}
         args:
         - "--storage.tsdb.path=/data"
-        - "--storage.tsdb.retention=6h"
+        - "--storage.tsdb.retention.time=6h"
         - "--config.file=/etc/prometheus/prometheus.yml"
         - "--log.level={{.PrometheusLogLevel}}"
         readinessProbe:
diff --git a/cli/cmd/testdata/install_default.golden b/cli/cmd/testdata/install_default.golden
index 861d701af..003dad168 100644
--- a/cli/cmd/testdata/install_default.golden
+++ b/cli/cmd/testdata/install_default.golden
@@ -942,7 +942,7 @@ spec:
       containers:
       - args:
         - --storage.tsdb.path=/data
-        - --storage.tsdb.retention=6h
+        - --storage.tsdb.retention.time=6h
         - --config.file=/etc/prometheus/prometheus.yml
         - --log.level=info
         image: prom/prometheus:v2.7.1
diff --git a/cli/cmd/testdata/install_ha_output.golden b/cli/cmd/testdata/install_ha_output.golden
index a38d5a7dc..8a6684a1f 100644
--- a/cli/cmd/testdata/install_ha_output.golden
+++ b/cli/cmd/testdata/install_ha_output.golden
@@ -966,7 +966,7 @@ spec:
       containers:
       - args:
         - --storage.tsdb.path=/data
-        - --storage.tsdb.retention=6h
+        - --storage.tsdb.retention.time=6h
         - --config.file=/etc/prometheus/prometheus.yml
         - --log.level=info
         image: prom/prometheus:v2.7.1
diff --git a/cli/cmd/testdata/install_ha_with_overrides_output.golden b/cli/cmd/testdata/install_ha_with_overrides_output.golden
index bba9e9f59..52f8afc3e 100644
--- a/cli/cmd/testdata/install_ha_with_overrides_output.golden
+++ b/cli/cmd/testdata/install_ha_with_overrides_output.golden
@@ -966,7 +966,7 @@ spec:
       containers:
       - args:
         - --storage.tsdb.path=/data
-        - --storage.tsdb.retention=6h
+        - --storage.tsdb.retention.time=6h
         - --config.file=/etc/prometheus/prometheus.yml
         - --log.level=info
         image: prom/prometheus:v2.7.1
diff --git a/cli/cmd/testdata/install_no_init_container.golden b/cli/cmd/testdata/install_no_init_container.golden
index 580f14af1..a8a9e0362 100644
--- a/cli/cmd/testdata/install_no_init_container.golden
+++ b/cli/cmd/testdata/install_no_init_container.golden
@@ -870,7 +870,7 @@ spec:
       containers:
       - args:
         - --storage.tsdb.path=/data
-        - --storage.tsdb.retention=6h
+        - --storage.tsdb.retention.time=6h
         - --config.file=/etc/prometheus/prometheus.yml
         - --log.level=info
         image: prom/prometheus:v2.7.1
diff --git a/cli/cmd/testdata/install_no_init_container_auto_inject.golden b/cli/cmd/testdata/install_no_init_container_auto_inject.golden
index f2104e9a3..c8debf914 100644
--- a/cli/cmd/testdata/install_no_init_container_auto_inject.golden
+++ b/cli/cmd/testdata/install_no_init_container_auto_inject.golden
@@ -872,7 +872,7 @@ spec:
       containers:
       - args:
         - --storage.tsdb.path=/data
-        - --storage.tsdb.retention=6h
+        - --storage.tsdb.retention.time=6h
         - --config.file=/etc/prometheus/prometheus.yml
         - --log.level=info
         image: prom/prometheus:v2.7.1
diff --git a/cli/cmd/testdata/install_output.golden b/cli/cmd/testdata/install_output.golden
index 609a69eaa..b90758cc6 100644
--- a/cli/cmd/testdata/install_output.golden
+++ b/cli/cmd/testdata/install_output.golden
@@ -839,7 +839,7 @@ spec:
       containers:
       - args:
         - --storage.tsdb.path=/data
-        - --storage.tsdb.retention=6h
+        - --storage.tsdb.retention.time=6h
         - --config.file=/etc/prometheus/prometheus.yml
         - --log.level=PrometheusLogLevel
         image: PrometheusImage