diff --git a/apps/cert-manager.yaml b/apps/cert-manager.yaml
index 83a48da..07d734c 100644
--- a/apps/cert-manager.yaml
+++ b/apps/cert-manager.yaml
@@ -17,7 +17,7 @@ spec:
   source:
     repoURL: https://charts.jetstack.io
     chart: cert-manager
-    targetRevision: v1.20.3
+    targetRevision: v1.21.0
     helm:
       valuesObject:
         crds: