diff --git a/stable/prometheus-mongodb-exporter/Chart.yaml b/stable/prometheus-mongodb-exporter/Chart.yaml
index ef6a9a5b28..58b3e9eaef 100644
--- a/stable/prometheus-mongodb-exporter/Chart.yaml
+++ b/stable/prometheus-mongodb-exporter/Chart.yaml
@@ -13,4 +13,4 @@ maintainers:
 name: prometheus-mongodb-exporter
 sources:
 - https://github.com/percona/mongodb_exporter
-version: 2.2.0
+version: 2.2.1
diff --git a/stable/prometheus-mongodb-exporter/templates/deployment.yaml b/stable/prometheus-mongodb-exporter/templates/deployment.yaml
index a150d005df..4a5c15b195 100644
--- a/stable/prometheus-mongodb-exporter/templates/deployment.yaml
+++ b/stable/prometheus-mongodb-exporter/templates/deployment.yaml
@@ -18,7 +18,10 @@ spec:
   template:
     metadata:
       annotations:
-        {{- toYaml .Values.podAnnotations | nindent 8 }}
+        checksum/config: {{ include (print $.Template.BasePath "/secret.yaml") . | sha256sum }}
+        {{- if .Values.podAnnotations }}
+          {{- toYaml .Values.podAnnotations | nindent 8 }}
+        {{- end }}
       labels:
         app.kubernetes.io/name: {{ include "prometheus-mongodb-exporter.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}