diff --git a/deploy/charts/cert-manager/templates/webhook-mutating-webhook.yaml b/deploy/charts/cert-manager/templates/webhook-mutating-webhook.yaml
index f3db011ef..165537f24 100644
--- a/deploy/charts/cert-manager/templates/webhook-mutating-webhook.yaml
+++ b/deploy/charts/cert-manager/templates/webhook-mutating-webhook.yaml
@@ -25,7 +25,7 @@ webhooks:
           - CREATE
           - UPDATE
         resources:
-          - "*/*"
+          - "certificaterequests"
     admissionReviewVersions: ["v1"]
     # This webhook only accepts v1 cert-manager resources.
     # Equivalent matchPolicy ensures that non-v1 resource requests are sent to