diff --git a/clusters/homelab/apps/cert-manager.yaml b/clusters/homelab/apps/cert-manager.yaml
new file mode 100644
index 0000000..db4c457
--- /dev/null
+++ b/clusters/homelab/apps/cert-manager.yaml
@@ -0,0 +1,34 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: cert-manager
+  namespace: argocd
+  finalizers:
+    - resources-finalizer.argocd.argoproj.io
+spec:
+  project: homelab
+
+  sources:
+    - repoURL: oci://quay.io/jetstack/charts
+      chart: cert-manager
+      targetRevision: v1.20.2
+      helm:
+        releaseName: cert-manager
+        valueFiles:
+          - $values/infrastructure/cert-manager/helm/values.yaml
+
+    - repoURL: gitea@172.16.2.52:baptiste/k8s.git
+      targetRevision: main
+      ref: values
+
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: cert-manager
+
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true
+      - ServerSideApply=true
diff --git a/clusters/homelab/apps/kustomization.yaml b/clusters/homelab/apps/kustomization.yaml
index a84b331..f5a57dc 100644
--- a/clusters/homelab/apps/kustomization.yaml
+++ b/clusters/homelab/apps/kustomization.yaml
@@ -3,4 +3,5 @@ kind: Kustomization
 
 resources:
   - metallb.yaml
+  - cert-manager.yaml
   - web-test.yaml
diff --git a/infrastructure/cert-manager/helm/values.yaml b/infrastructure/cert-manager/helm/values.yaml
index e69de29..819bdfb 100644
--- a/infrastructure/cert-manager/helm/values.yaml
+++ b/infrastructure/cert-manager/helm/values.yaml
@@ -0,0 +1,11 @@
+crds:
+  enabled: true
+
+prometheus:
+  enabled: true
+  servicemonitor:
+    enabled: true
+
+global:
+  leaderElection:
+    namespace: cert-manager