diff --git a/deployment/infrastructure/data-consumer/edc-consumer/values-int.yaml b/deployment/infrastructure/data-consumer/edc-consumer/values-int.yaml
index cc62d0f1e..12422f4cf 100644
--- a/deployment/infrastructure/data-consumer/edc-consumer/values-int.yaml
+++ b/deployment/infrastructure/data-consumer/edc-consumer/values-int.yaml
@@ -200,6 +200,7 @@ item-relationship-service:
     enabled: true
     annotations:
       ingressClassName: nginx
+      cert-manager.io/cluster-issuer: letsencrypt-prod
       nginx.ingress.kubernetes.io/backend-protocol: HTTP
       nginx.ingress.kubernetes.io/force-ssl-redirect: 'true'
       nginx.ingress.kubernetes.io/ssl-passthrough: 'false'