diff --git a/app-of-apps/guestbook.jsonnet b/app-of-apps/guestbook.jsonnet
new file mode 100644
index 0000000..187b7fa
--- /dev/null
+++ b/app-of-apps/guestbook.jsonnet
@@ -0,0 +1,28 @@
+{
+    apiVersion: "argoproj.io/v1alpha1",
+    kind: "Application",
+    metadata: {
+        name: "helm-guestbook",
+        namespace: "argo",
+        finalizers: [
+            "resources-finalizer.argocd.argoproj.io"
+        ]
+    },
+    spec: {
+        destination: {
+            namespace: "helm-guestbook",
+            server: "https://kubernetes.default.svc"
+        },
+        project: "default",
+        source: {
+            path: "helm-guestbook",
+            repoURL: "https://github.com/argoproj/argocd-example-apps",
+            targetRevision: "HEAD"
+        },
+        syncPolicy: {
+            syncOptions: [
+                "CreateNamespace=true"
+            ]
+        }
+    }
+}
diff --git a/app-of-apps/guestbook.yaml b/app-of-apps/guestbook.yaml
deleted file mode 100644
index b49215e..0000000
--- a/app-of-apps/guestbook.yaml
+++ /dev/null
@@ -1,20 +0,0 @@
-apiVersion: argoproj.io/v1alpha1
-kind: Application
-metadata:
-  name: helm-guestbook
-  namespace: argo
-  finalizers:
-  - resources-finalizer.argocd.argoproj.io
-spec:
-  destination:
-    namespace: helm-guestbook
-    server: https://kubernetes.default.svc
-  project: default
-  source:
-    path: helm-guestbook
-    repoURL: https://github.com/argoproj/argocd-example-apps
-    targetRevision: HEAD
-  syncPolicy:
-    syncOptions:
-      - CreateNamespace=true
-