diff --git a/kubernetes/infra/cert-manager/app.yaml b/kubernetes/infra/cert-manager/app.yaml
index 4a1dd144..79b51000 100644
--- a/kubernetes/infra/cert-manager/app.yaml
+++ b/kubernetes/infra/cert-manager/app.yaml
@@ -17,7 +17,7 @@ spec:
   info:
     - name: Chart
       # renovate: datasource=helm registryUrl=https://charts.jetstack.io depName=cert-manager
-      value: cert-manager@v1.20.2
+      value: cert-manager@v1.21.1
 
   syncPolicy:
     syncOptions:
diff --git a/kubernetes/infra/cert-manager/kustomization.yaml b/kubernetes/infra/cert-manager/kustomization.yaml
index 9286d4f6..88d3200f 100644
--- a/kubernetes/infra/cert-manager/kustomization.yaml
+++ b/kubernetes/infra/cert-manager/kustomization.yaml
@@ -13,7 +13,7 @@ helmCharts:
   - name: cert-manager
     repo: https://charts.jetstack.io
     # renovate: datasource=helm registryUrl=https://charts.jetstack.io depName=cert-manager
-    version: v1.20.2
+    version: v1.21.1
     releaseName: cert-manager
     namespace: infra
     valuesFile: values.yaml