diff --git a/clusters/titan.lan.huizinga.dev/cert-manager/cert-manager.yaml b/clusters/titan.lan.huizinga.dev/cert-manager/cert-manager.yaml
new file mode 100644
index 0000000..8e34b2c
--- /dev/null
+++ b/clusters/titan.lan.huizinga.dev/cert-manager/cert-manager.yaml
@@ -0,0 +1,26 @@
+apiVersion: helm.toolkit.fluxcd.io/v2
+kind: HelmRelease
+metadata:
+  name: cert-manager
+  namespace: cert-manager
+spec:
+  chart:
+    spec:
+      chart: cert-manager
+      reconcileStrategy: ChartVersion
+      sourceRef:
+        kind: HelmRepository
+        name: jetstack
+      version: v1.15.3
+  interval: 1m0s
+  values:
+    installCRDs: true
+    replicaCount: 1
+    extraArgs:
+      - --dns01-recursive-nameservers=1.1.1.1:53,9.9.9.9:53
+      - --dns01-recursive-nameservers-only
+    podDnsPolicy: None
+    podDnsConfig:
+      nameservers:
+        - "1.1.1.1"
+        - "9.9.9.9"
diff --git a/clusters/titan.lan.huizinga.dev/cert-manager/helmrepo.yaml b/clusters/titan.lan.huizinga.dev/cert-manager/helmrepo.yaml
new file mode 100644
index 0000000..8be1e6f
--- /dev/null
+++ b/clusters/titan.lan.huizinga.dev/cert-manager/helmrepo.yaml
@@ -0,0 +1,8 @@
+apiVersion: source.toolkit.fluxcd.io/v1
+kind: HelmRepository
+metadata:
+  name: jetstack
+  namespace: cert-manager
+spec:
+  interval: 1m0s
+  url: https://charts.jetstack.io
diff --git a/clusters/titan.lan.huizinga.dev/cert-manager/kustomization.yaml b/clusters/titan.lan.huizinga.dev/cert-manager/kustomization.yaml
new file mode 100644
index 0000000..328dd7e
--- /dev/null
+++ b/clusters/titan.lan.huizinga.dev/cert-manager/kustomization.yaml
@@ -0,0 +1,6 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - namespace.yaml
+  - helmrepo.yaml
+  - cert-manager.yaml
diff --git a/clusters/titan.lan.huizinga.dev/cert-manager/namespace.yaml b/clusters/titan.lan.huizinga.dev/cert-manager/namespace.yaml
new file mode 100644
index 0000000..c90416f
--- /dev/null
+++ b/clusters/titan.lan.huizinga.dev/cert-manager/namespace.yaml
@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: cert-manager