diff --git a/specification/containerservice/resource-manager/Microsoft.ContainerService/aks/tspconfig.yaml b/specification/containerservice/resource-manager/Microsoft.ContainerService/aks/tspconfig.yaml
index 854a10b000c1..42f473321b8b 100644
--- a/specification/containerservice/resource-manager/Microsoft.ContainerService/aks/tspconfig.yaml
+++ b/specification/containerservice/resource-manager/Microsoft.ContainerService/aks/tspconfig.yaml
@@ -52,9 +52,11 @@ options:
     namespace: "Azure.ResourceManager.ContainerService"
     emitter-output-dir: "{output-dir}/{service-dir}/{namespace}"
     enable-wire-path-attribute: true
+    api-version: "2026-03-01"
   "@azure-typespec/http-client-csharp-provisioning":
     namespace: "Azure.Provisioning.ContainerService"
     emitter-output-dir: "{output-dir}/{service-dir}/{namespace}"
+    api-version: "2026-03-01"
 
 linter:
   extends: