diff --git a/etc/layout.yaml-sample b/etc/layout.yaml-sample
index eec8553..b49f5d5 100644
--- a/etc/layout.yaml-sample
+++ b/etc/layout.yaml-sample
@@ -2,7 +2,8 @@
   - name: check
     manager: IndependentPipelineManager
     trigger:
-      - event: patchset-created
+      gerrit:
+        - event: patchset-created
     success:
       verified: 1
     failure:
@@ -11,8 +12,9 @@
   - name: tests
     manager: IndependentPipelineManager
     trigger:
-     - event: patchset-created
-       email_filter: ^.*@example.org$
+      gerrit:
+        - event: patchset-created
+          email_filter: ^.*@example.org$
     success:
       verified: 1
     failure:
@@ -21,15 +23,17 @@
   - name: post
     manager: IndependentPipelineManager
     trigger:
-      - event: ref-updated
-        ref: ^(?!refs/).*$
+      gerrit:
+        - event: ref-updated
+          ref: ^(?!refs/).*$
 
   - name: gate
     manager: DependentPipelineManager
     trigger:
-      - event: comment-added
-        approval:
-          - approved: 1
+      gerrit:
+        - event: comment-added
+          approval:
+            - approved: 1
     start:
       verified: 0
     success: