diff --git a/docs/eventing/samples/sequence/sequence-with-broker-trigger/steps.yaml b/docs/eventing/samples/sequence/sequence-with-broker-trigger/steps.yaml
index 013b8b98a..1924a6d2e 100644
--- a/docs/eventing/samples/sequence/sequence-with-broker-trigger/steps.yaml
+++ b/docs/eventing/samples/sequence/sequence-with-broker-trigger/steps.yaml
@@ -33,6 +33,7 @@ spec:
   template:
     spec:
       containers:
+      - image: gcr.io/knative-releases/knative.dev/eventing-contrib/cmd/appender
         env:
         - name: MESSAGE
           value: " - Handled by 2"