diff --git a/examples/httpbin/deployment.yaml b/examples/httpbin/deployment.yaml
index 005e9d9fb6..5b44f60cb7 100644
--- a/examples/httpbin/deployment.yaml
+++ b/examples/httpbin/deployment.yaml
@@ -48,8 +48,8 @@ spec:
   selector:
     app: httpbin-deployment
   ports:
-  - name: http
-    port: 80
-    protocol: TCP
-    targetPort: 80
+    - name: http
+      port: 80
+      protocol: TCP
+      targetPort: 80
   type: ClusterIP
diff --git a/examples/httpbin/httproute.yaml b/examples/httpbin/httproute.yaml
index b789b2dc49..7728eb7f0a 100644
--- a/examples/httpbin/httproute.yaml
+++ b/examples/httpbin/httproute.yaml
@@ -16,7 +16,7 @@ spec:
     type: ControlPlane
     controlPlane:
       endpoints:
-      - ${ADMIN_ENDPOINT}   # https://127.0.0.1:7443
+        - ${ADMIN_ENDPOINT}   # https://127.0.0.1:7443
       auth:
         type: AdminKey
         adminKey:
@@ -31,9 +31,9 @@ metadata:
 spec:
   gatewayClassName: apisix
   listeners:
-  - name: http
-    protocol: HTTP
-    port: 80
+    - name: http
+      protocol: HTTP
+      port: 80
   infrastructure:
     parametersRef:
       group: apisix.apache.org
@@ -48,14 +48,14 @@ metadata:
   name: httpbin
 spec:
   parentRefs:
-  - name: apisix
+    - name: apisix
   hostnames:
-  - httpbin.example.com
+    - httpbin.example.com
   rules:
-  - matches: 
-    - path:
-        type: PathPrefix
-        value: /*
-    backendRefs:
-    - name: httpbin
-      port: 80
+    - matches:
+        - path:
+            type: PathPrefix
+            value: /*
+      backendRefs:
+        - name: httpbin
+          port: 80
diff --git a/examples/httpbin/ingress.yaml b/examples/httpbin/ingress.yaml
index 9e6b226a55..a3bc13d696 100644
--- a/examples/httpbin/ingress.yaml
+++ b/examples/httpbin/ingress.yaml
@@ -8,7 +8,7 @@ spec:
     type: ControlPlane
     controlPlane:
       endpoints:
-      - ${ADMIN_ENDPOINT}   # https://127.0.0.1:7443
+        - ${ADMIN_ENDPOINT}   # https://127.0.0.1:7443
       auth:
         type: AdminKey
         adminKey:
@@ -38,13 +38,13 @@ metadata:
 spec:
   ingressClassName: apisix
   rules:
-  - host: httpbin.example.com
-    http:
-      paths:
-      - path: /
-        pathType: Prefix
-        backend:
-          service:
-            name: httpbin
-            port:
-              number: 80
+    - host: httpbin.example.com
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: httpbin
+                port:
+                  number: 80
diff --git a/examples/httpbin/quickstart.yaml b/examples/httpbin/quickstart.yaml
index 36efed0558..abd55cebf2 100644
--- a/examples/httpbin/quickstart.yaml
+++ b/examples/httpbin/quickstart.yaml
@@ -48,13 +48,13 @@ spec:
   selector:
     app: httpbin-deployment
   ports:
-  - name: http
-    port: 80
-    protocol: TCP
-    targetPort: 80
+    - name: http
+      port: 80
+      protocol: TCP
+      targetPort: 80
   type: ClusterIP
 
---- 
+---
 
 apiVersion: gateway.networking.k8s.io/v1
 kind: GatewayClass
@@ -74,7 +74,7 @@ spec:
     type: ControlPlane
     controlPlane:
       endpoints:
-      - ${ADMIN_ENDPOINT}   # https://127.0.0.1:7443
+        - ${ADMIN_ENDPOINT}   # https://127.0.0.1:7443
       auth:
         type: AdminKey
         adminKey:
@@ -89,9 +89,9 @@ metadata:
 spec:
   gatewayClassName: apisix
   listeners:
-  - name: http
-    protocol: HTTP
-    port: 80
+    - name: http
+      protocol: HTTP
+      port: 80
   infrastructure:
     parametersRef:
       group: apisix.apache.org
@@ -106,14 +106,14 @@ metadata:
   name: httpbin
 spec:
   parentRefs:
-  - name: apisix
+    - name: apisix
   hostnames:
-  - httpbin.example.com
+    - httpbin.example.com
   rules:
-  - matches: 
-    - path:
-        type: PathPrefix
-        value: /*
-    backendRefs:
-    - name: httpbin
-      port: 80
+    - matches:
+        - path:
+            type: PathPrefix
+            value: /*
+      backendRefs:
+        - name: httpbin
+          port: 80
diff --git a/examples/httpbin/service-rewrite-host.yaml b/examples/httpbin/service-rewrite-host.yaml
index e5bf0136e6..731b16c515 100644
--- a/examples/httpbin/service-rewrite-host.yaml
+++ b/examples/httpbin/service-rewrite-host.yaml
@@ -4,8 +4,8 @@ metadata:
   name: httpbin
 spec:
   targetRefs:
-  - name: httpbin
-    kind: Service
-    group: ""
+    - name: httpbin
+      kind: Service
+      group: ""
   passHost: rewrite
   upstreamHost: httpbin.example.com
diff --git a/examples/httpbin/service-timeout.yaml b/examples/httpbin/service-timeout.yaml
index a7da94db88..f926536dfa 100644
--- a/examples/httpbin/service-timeout.yaml
+++ b/examples/httpbin/service-timeout.yaml
@@ -4,9 +4,9 @@ metadata:
   name: httpbin
 spec:
   targetRefs:
-  - name: httpbin
-    kind: Service
-    group: ""
+    - name: httpbin
+      kind: Service
+      group: ""
   timeout:
     send: 10s
     read: 10s