diff --git a/charts/netbox/Chart.yaml b/charts/netbox/Chart.yaml
index 561eee11..2abb9305 100644
--- a/charts/netbox/Chart.yaml
+++ b/charts/netbox/Chart.yaml
@@ -1,6 +1,6 @@
 apiVersion: v2
 name: netbox
-version: 5.0.0-beta.156
+version: 5.0.0-beta.157
 appVersion: "v4.1.7"
 type: application
 kubeVersion: ^1.25.0-0
diff --git a/charts/netbox/templates/_helpers.tpl b/charts/netbox/templates/_helpers.tpl
index d57d151a..97dc64cb 100644
--- a/charts/netbox/templates/_helpers.tpl
+++ b/charts/netbox/templates/_helpers.tpl
@@ -124,7 +124,7 @@ Volume mounts for .Values.extraConfig entries
 */}}
 {{- define "netbox.extraConfig.volumeMounts" -}}
 {{- range $index, $config := .Values.extraConfig }}
-- name: {{ printf "extra-config-%s" $index | quote }}
+- name: {{ printf "extra-config-%d" $index | quote }}
   mountPath: /run/config/extra/{{ $index }}
   readOnly: true
 {{- end }}
diff --git a/charts/netbox/templates/configmap.yaml b/charts/netbox/templates/configmap.yaml
index fbb392fc..074d7103 100644
--- a/charts/netbox/templates/configmap.yaml
+++ b/charts/netbox/templates/configmap.yaml
@@ -208,7 +208,7 @@ data:
 
   {{- range $index, $config := .Values.extraConfig }}
   {{- if $config.values }}
-  {{ printf "extra-%s.yaml" $index }}: |-
+  {{ printf "extra-%d.yaml" $index }}: |-
     {{- include "common.tplvalues.render" (dict "value" $config.values "context" $) | nindent 4 }}
   {{- end }}
   {{- end }}