diff --git a/manifests/v1beta1/components/webhook/kustomization.yaml b/manifests/v1beta1/components/webhook/kustomization.yaml
index 09b4fd9f707..36d137d8db2 100644
--- a/manifests/v1beta1/components/webhook/kustomization.yaml
+++ b/manifests/v1beta1/components/webhook/kustomization.yaml
@@ -4,4 +4,3 @@ kind: Kustomization
 
 resources:
   - webhooks.yaml
-  - secret.yaml
diff --git a/manifests/v1beta1/components/webhook/secret.yaml b/manifests/v1beta1/components/webhook/secret.yaml
deleted file mode 100644
index eca7937a885..00000000000
--- a/manifests/v1beta1/components/webhook/secret.yaml
+++ /dev/null
@@ -1,5 +0,0 @@
----
-apiVersion: v1
-kind: Secret
-metadata:
-  name: katib-webhook-cert
diff --git a/manifests/v1beta1/installs/katib-external-db/kustomization.yaml b/manifests/v1beta1/installs/katib-external-db/kustomization.yaml
index e346da9316b..aa053cd5dda 100644
--- a/manifests/v1beta1/installs/katib-external-db/kustomization.yaml
+++ b/manifests/v1beta1/installs/katib-external-db/kustomization.yaml
@@ -32,6 +32,10 @@ secretGenerator:
   - name: katib-mysql-secrets
     envs:
       - secrets.env
+  # Secret for webhooks certs.
+  - name: katib-webhook-cert
+    options:
+      disableNameSuffixHash: true
 configMapGenerator:
   - name: katib-config
     behavior: create
diff --git a/manifests/v1beta1/installs/katib-standalone-postgres/kustomization.yaml b/manifests/v1beta1/installs/katib-standalone-postgres/kustomization.yaml
index 5c2fef6e76c..b007b47a51e 100644
--- a/manifests/v1beta1/installs/katib-standalone-postgres/kustomization.yaml
+++ b/manifests/v1beta1/installs/katib-standalone-postgres/kustomization.yaml
@@ -41,3 +41,8 @@ configMapGenerator:
       - katib-config.yaml
     options:
       disableNameSuffixHash: true
+# Secret for webhooks certs.
+secretGenerator:
+  - name: katib-webhook-cert
+    options:
+      disableNameSuffixHash: true
diff --git a/manifests/v1beta1/installs/katib-standalone/kustomization.yaml b/manifests/v1beta1/installs/katib-standalone/kustomization.yaml
index 41fce6166f2..f1079a5239b 100644
--- a/manifests/v1beta1/installs/katib-standalone/kustomization.yaml
+++ b/manifests/v1beta1/installs/katib-standalone/kustomization.yaml
@@ -34,3 +34,8 @@ configMapGenerator:
       - katib-config.yaml
     options:
       disableNameSuffixHash: true
+# Secret for webhooks certs.
+secretGenerator:
+  - name: katib-webhook-cert
+    options:
+      disableNameSuffixHash: true