diff --git a/grafana/templates/deployment.yaml b/grafana/templates/deployment.yaml
index f74f40f01..694dffef6 100644
--- a/grafana/templates/deployment.yaml
+++ b/grafana/templates/deployment.yaml
@@ -44,6 +44,8 @@ spec:
         configmap-bin-hash: {{ tuple "configmap-bin.yaml" . | include "helm-toolkit.utils.hash" }}
         configmap-etc-hash: {{ tuple "configmap-etc.yaml" . | include "helm-toolkit.utils.hash" }}
     spec:
+      securityContext:
+        readOnlyRootFilesystem: true
 {{ dict "envAll" $envAll "application" "grafana" | include "helm-toolkit.snippets.kubernetes_pod_security_context" | indent 6 }}
       serviceAccountName: {{ $serviceAccountName }}
       nodeSelector: