diff --git a/apps/cert-manager.yaml b/apps/cert-manager.yaml
new file mode 100644
index 0000000..80dd635
--- /dev/null
+++ b/apps/cert-manager.yaml
@@ -0,0 +1,17 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: cert-manager
+  namespace: argocd
+spec:
+  project: default
+  source:
+    repoURL: https://gitea.whyredfire.tech/whyredfire/gitops
+    targetRevision: main
+    path: infra/cert-manager
+  destination:
+    server: https://kubernetes.default.svc
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
diff --git a/apps/kustomization.yaml b/apps/kustomization.yaml
index c31e1b6..b11a343 100644
--- a/apps/kustomization.yaml
+++ b/apps/kustomization.yaml
@@ -5,3 +5,4 @@ resources:
   - nginx-app.yaml
   - scriptscribe.yaml
   - sealed-secrets.yaml
+  - cert-manager.yaml
diff --git a/infra/cert-manager/kustomization.yaml b/infra/cert-manager/kustomization.yaml
new file mode 100644
index 0000000..1a1408b
--- /dev/null
+++ b/infra/cert-manager/kustomization.yaml
@@ -0,0 +1,5 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - https://github.com/cert-manager/cert-manager/releases/download/v1.19.2/cert-manager.yaml