diff --git a/values/umami/values/values-prod.yaml b/values/umami/values/values-prod.yaml
index 1c538dbf..d846505a 100644
--- a/values/umami/values/values-prod.yaml
+++ b/values/umami/values/values-prod.yaml
@@ -49,6 +49,7 @@ ingress:
   annotations:
     cert-manager.io/cluster-issuer: letsencrypt-production
     nginx.ingress.kubernetes.io/enable-cors: "true"
+    nginx.ingress.kubernetes.io/cors-allow-headers: Content-Type, x-umami-cache
     nginx.ingress.kubernetes.io/backend-protocol: HTTP
     nginx.ingress.kubernetes.io/proxy-buffer-size: 128k
     nginx.ingress.kubernetes.io/ssl-redirect: "true"