diff --git a/cert-manager/kustomization.yaml b/cert-manager/kustomization.yaml
index 2b8efbc..56ff7dc 100644
--- a/cert-manager/kustomization.yaml
+++ b/cert-manager/kustomization.yaml
@@ -6,3 +6,9 @@ namespace: cert-manager
 resources:
 - https://github.com/cert-manager/cert-manager/releases/download/v1.16.1/cert-manager.yaml
 - ./base/mziesel-ca.yaml
+
+patches:
+  - path: ./remove-instance-label.jsonpatch.yaml
+    target:
+      kind: CustomResourceDefinition
+      labelSelector: app.kubernetes.io/instance=cert-manager
diff --git a/cert-manager/remove-instance-label.jsonpatch.yaml b/cert-manager/remove-instance-label.jsonpatch.yaml
new file mode 100644
index 0000000..60ae190
--- /dev/null
+++ b/cert-manager/remove-instance-label.jsonpatch.yaml
@@ -0,0 +1,3 @@
+---
+- op: remove
+  path: /metadata/labels/app.kubernetes.io~1instance