diff --git a/kubernetes/loculus/templates/ingressroute.yaml b/kubernetes/loculus/templates/ingressroute.yaml
index c107197e65..5e6dc54ac1 100644
--- a/kubernetes/loculus/templates/ingressroute.yaml
+++ b/kubernetes/loculus/templates/ingressroute.yaml
@@ -56,6 +56,8 @@ apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
   name: loculus-keycloak-ingress
+  annotations:
+    traefik.ingress.kubernetes.io/router.middlewares: "{{ $.Release.Namespace }}-compression-middleware@kubernetescrd"
 spec:
   rules:
     - host: "{{ $keycloakHost }}"