diff --git a/charts/cloudnative-pg/templates/deployment.yaml b/charts/cloudnative-pg/templates/deployment.yaml
index 45619fa70..858248a66 100644
--- a/charts/cloudnative-pg/templates/deployment.yaml
+++ b/charts/cloudnative-pg/templates/deployment.yaml
@@ -31,8 +31,9 @@ spec:
       {{- include "cloudnative-pg.selectorLabels" . | nindent 6 }}
   template:
     metadata:
-      {{- with .Values.podAnnotations }}
       annotations:
+        checksum/config: {{ include (print $.Template.BasePath "/config.yaml") . | sha256sum }}
+      {{- with .Values.podAnnotations }}
         {{- toYaml . | nindent 8 }}
       {{- end }}
       labels: