diff --git a/stable/prometheus-operator/Chart.yaml b/stable/prometheus-operator/Chart.yaml
index 965ad357c8..4f028f3134 100644
--- a/stable/prometheus-operator/Chart.yaml
+++ b/stable/prometheus-operator/Chart.yaml
@@ -11,7 +11,7 @@ name: prometheus-operator
 sources:
   - https://github.com/coreos/prometheus-operator
   - https://coreos.com/operators/prometheus
-version: 6.6.0
+version: 6.6.1
 appVersion: 0.31.1
 home: https://github.com/coreos/prometheus-operator
 keywords:
diff --git a/stable/prometheus-operator/README.md b/stable/prometheus-operator/README.md
index 680505c153..32af83dcf5 100644
--- a/stable/prometheus-operator/README.md
+++ b/stable/prometheus-operator/README.md
@@ -256,7 +256,7 @@ The following tables list the configurable parameters of the prometheus-operator
 | `prometheus.prometheusSpec.logFormat` | Log format for Prometheus to be configured with. | `logfmt` |
 | `prometheus.prometheusSpec.scrapeInterval` | Interval between consecutive scrapes. | `""` |
 | `prometheus.prometheusSpec.evaluationInterval` | Interval between consecutive evaluations. | `""` |
-| `prometheus.prometheusSpec.externalLabels` | The labels to add to any time series or alerts when communicating with external systems (federation, remote storage, Alertmanager). | `[]` |
+| `prometheus.prometheusSpec.externalLabels` | The labels to add to any time series or alerts when communicating with external systems (federation, remote storage, Alertmanager). | `{}` |
 | `prometheus.prometheusSpec.replicaExternalLabelName` | Name of the external label used to denote replica name. | `""` |
 | `prometheus.prometheusSpec.replicaExternalLabelNameClear` | If true, the Operator won't add the external label used to denote replica name. | `false` |
 | `prometheus.prometheusSpec.prometheusExternalLabelName` | Name of the external label used to denote Prometheus instance name. | `""` |