diff --git a/crds/cert-manager/kustomization.yaml b/crds/cert-manager/kustomization.yaml
index 6b8ef9688..da0d8ffdc 100644
--- a/crds/cert-manager/kustomization.yaml
+++ b/crds/cert-manager/kustomization.yaml
@@ -3,4 +3,4 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
   # renovate: registryUrl=https://charts.jetstack.io chart=cert-manager
-  - https://github.com/cert-manager/cert-manager/releases/download/v1.21.0/cert-manager.crds.yaml
+  - https://github.com/cert-manager/cert-manager/releases/download/v1.21.1/cert-manager.crds.yaml
diff --git a/infra/cert-manager/helmrelease.yaml b/infra/cert-manager/helmrelease.yaml
index ea4e9c238..9f6bc3ce1 100644
--- a/infra/cert-manager/helmrelease.yaml
+++ b/infra/cert-manager/helmrelease.yaml
@@ -11,7 +11,7 @@ spec:
   chart:
     spec:
       chart: cert-manager
-      version: v1.21.0
+      version: v1.21.1
       sourceRef:
         kind: HelmRepository
         name: jetstack