diff --git a/charts/stable/traefik/Chart.yaml b/charts/stable/traefik/Chart.yaml
index 42567a6c4f9..9a30f03d807 100644
--- a/charts/stable/traefik/Chart.yaml
+++ b/charts/stable/traefik/Chart.yaml
@@ -26,4 +26,4 @@ sources:
 - https://traefik.io/
 type: application
 upstream_version: v9.19.2
-version: 6.3.11
+version: 6.3.12
diff --git a/charts/stable/traefik/templates/custom/middlewares/basicauth.yaml b/charts/stable/traefik/templates/custom/middlewares/basicauth.yaml
index 931705ccc14..4e0f326a2f4 100644
--- a/charts/stable/traefik/templates/custom/middlewares/basicauth.yaml
+++ b/charts/stable/traefik/templates/custom/middlewares/basicauth.yaml
@@ -11,7 +11,7 @@ metadata:
   name: {{printf "%v-%v" $middlewareData.name "secret" }}
   namespace: traefikmiddlewares
 type: Opaque
-stringdata:
+stringData:
   users: |
     {{- range $index, $user := $users }}
     {{ printf "%s" $user }}