diff --git a/charts/pomerium/Chart.yaml b/charts/pomerium/Chart.yaml
index 26fa548f..1d95ba1f 100644
--- a/charts/pomerium/Chart.yaml
+++ b/charts/pomerium/Chart.yaml
@@ -1,6 +1,6 @@
 apiVersion: v2
 name: pomerium
-version: 25.0.3
+version: 25.0.4
 appVersion: 0.15.7
 home: http://www.pomerium.com/
 icon: https://www.pomerium.com/img/icon.svg
diff --git a/charts/pomerium/templates/ingress-controller-deployment.yaml b/charts/pomerium/templates/ingress-controller-deployment.yaml
index ee5ffb3f..7e318afb 100644
--- a/charts/pomerium/templates/ingress-controller-deployment.yaml
+++ b/charts/pomerium/templates/ingress-controller-deployment.yaml
@@ -53,7 +53,7 @@ spec:
         args:
           - --name={{ .Values.ingressController.config.ingressClass }}
           {{ if .Values.ingressController.config.namespaces -}}
-          - --namespaces={{ .Values.ingressController.config.namespaces }}
+          - --namespaces={{ .Values.ingressController.config.namespaces | join "," }}
           {{ end -}}
           - --databroker-service-url={{ printf "%s://%s.%s.svc.cluster.local" (include "pomerium.httpTrafficPort.name" .) (include "pomerium.databroker.fullname" .) .Release.Namespace }}
           - --databroker-tls-ca-file=/pomerium/ca/ca.crt