diff --git a/appengine/building-an-app/update/app.yaml b/appengine/building-an-app/update/app.yaml
index 25ee95b89f..9c14502f49 100755
--- a/appengine/building-an-app/update/app.yaml
+++ b/appengine/building-an-app/update/app.yaml
@@ -11,6 +11,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# [START gae_app_yaml]
 # [START app_yaml]
 runtime: nodejs20
 # [END app_yaml]
+# [END gae_app_yaml]