diff --git a/docs/content/migration/v1-to-v2.md b/docs/content/migration/v1-to-v2.md
index 68dea0571..2a7006add 100644
--- a/docs/content/migration/v1-to-v2.md
+++ b/docs/content/migration/v1-to-v2.md
@@ -609,6 +609,7 @@ with the path `/admin` stripped, e.g. to `http://<IP>:<port>/`. In this case, yo
           middlewares:
             - name: admin-stripprefix
     ---
+    apiVersion: traefik.containo.us/v1alpha1
     kind: Middleware
     metadata:
       name: admin-stripprefix