diff --git a/argocd/kustomization.yaml b/argocd/kustomization.yaml
index ae4a080..a684876 100644
--- a/argocd/kustomization.yaml
+++ b/argocd/kustomization.yaml
@@ -2,5 +2,6 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 namespace: argocd
 resources:
+  - namespace.yaml
   # v1.5.2
   - github.com/argoproj/argo-cd/manifests/cluster-install?ref=c2c19f42ad78ed7a6fb70e86aed117be484feb50
diff --git a/argocd/namespace.yaml b/argocd/namespace.yaml
new file mode 100644
index 0000000..caa0486
--- /dev/null
+++ b/argocd/namespace.yaml
@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+	name: argocd
diff --git a/example-book/kustomization.yaml b/example-book/kustomization.yaml
index 1328e93..18430d9 100644
--- a/example-book/kustomization.yaml
+++ b/example-book/kustomization.yaml
@@ -2,4 +2,5 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 
 resources:
+  - namespace.yaml
   - github.com/argoproj/argocd-example-apps/kustomize-guestbook/?ref=6bed858de32a0e876ec49dad1a2e3c5840d3fb07
diff --git a/example-book/namespace.yaml b/example-book/namespace.yaml
new file mode 100644
index 0000000..a134b65
--- /dev/null
+++ b/example-book/namespace.yaml
@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+	name: example-book