diff --git a/helm/estafette-gke-preemptible-killer/templates/deployment.yaml b/helm/estafette-gke-preemptible-killer/templates/deployment.yaml
index 2443206..ab28fe1 100644
--- a/helm/estafette-gke-preemptible-killer/templates/deployment.yaml
+++ b/helm/estafette-gke-preemptible-killer/templates/deployment.yaml
@@ -27,6 +27,7 @@ spec:
       annotations:
         prometheus.io/scrape: "true"
         prometheus.io/port: "9101"
+        checksum/secrets: {{ include (print $.Template.BasePath "/secret.yaml") . | sha256sum }}
     spec:
     {{- with .Values.imagePullSecrets }}
       imagePullSecrets: