diff --git a/charts/cert-manager-webhook-dnsimple/templates/apiservice.yaml b/charts/cert-manager-webhook-dnsimple/templates/apiservice.yaml
index b498911..c623b64 100644
--- a/charts/cert-manager-webhook-dnsimple/templates/apiservice.yaml
+++ b/charts/cert-manager-webhook-dnsimple/templates/apiservice.yaml
@@ -1,5 +1,4 @@
-{{- $APIRegistrationAPIVersion := ternary "apiregistration.k8s.io/v1" "apiregistration.k8s.io/v1beta1" (.Capabilities.APIVersions.Has "apiregistration.k8s.io/v1") -}}
-apiVersion: {{ $APIRegistrationAPIVersion }}
+apiVersion: apiregistration.k8s.io/v1
 kind: APIService
 metadata:
   name: v1alpha1.{{ include "dnsimple-webhook.api-group" . }}
diff --git a/charts/cert-manager-webhook-dnsimple/templates/pki.yaml b/charts/cert-manager-webhook-dnsimple/templates/pki.yaml
index fae08fd..cbabdd8 100644
--- a/charts/cert-manager-webhook-dnsimple/templates/pki.yaml
+++ b/charts/cert-manager-webhook-dnsimple/templates/pki.yaml
@@ -1,8 +1,7 @@
-{{- $CertManagerAPIVersion := ternary "cert-manager.io/v1" "cert-manager.io/v1alpha2" (.Capabilities.APIVersions.Has "cert-manager.io/v1") -}}
 ---
 # Create a selfsigned Issuer, in order to create a root CA certificate for
 # signing webhook serving certificates
-apiVersion: {{ $CertManagerAPIVersion }}
+apiVersion: cert-manager.io/v1
 kind: Issuer
 metadata:
   name: {{ include "dnsimple-webhook.selfSignedIssuer" . }}
@@ -18,7 +17,7 @@ spec:
 ---
 
 # Generate a CA Certificate used to sign certificates for the webhook
-apiVersion: {{ $CertManagerAPIVersion }}
+apiVersion: cert-manager.io/v1
 kind: Certificate
 metadata:
   name: {{ include "dnsimple-webhook.rootCACertificate" . }}
@@ -39,7 +38,7 @@ spec:
 ---
 
 # Create an Issuer that uses the above generated CA certificate to issue certs
-apiVersion: {{ $CertManagerAPIVersion }}
+apiVersion: cert-manager.io/v1
 kind: Issuer
 metadata:
   name: {{ include "dnsimple-webhook.rootCAIssuer" . }}
@@ -56,7 +55,7 @@ spec:
 ---
 
 # Finally, generate a serving certificate for the webhook to use
-apiVersion: {{ $CertManagerAPIVersion }}
+apiVersion: cert-manager.io/v1
 kind: Certificate
 metadata:
   name: {{ include "dnsimple-webhook.servingCertificate" . }}
diff --git a/charts/cert-manager-webhook-dnsimple/templates/rbac.yaml b/charts/cert-manager-webhook-dnsimple/templates/rbac.yaml
index 91192d8..2636769 100644
--- a/charts/cert-manager-webhook-dnsimple/templates/rbac.yaml
+++ b/charts/cert-manager-webhook-dnsimple/templates/rbac.yaml
@@ -1,4 +1,3 @@
-{{- $RBACAPIVersion := ternary "rbac.authorization.k8s.io/v1" "rbac.authorization.k8s.io/v1beta1" (.Capabilities.APIVersions.Has "rbac.authorization.k8s.io/v1") -}}
 apiVersion: v1
 kind: ServiceAccount
 metadata:
@@ -12,7 +11,7 @@ metadata:
 # Grant the webhook permission to read the ConfigMap containing the Kubernetes
 # apiserver's requestheader-ca-certificate.
 # This ConfigMap is automatically created by the Kubernetes apiserver.
-apiVersion: {{ $RBACAPIVersion }}
+apiVersion: rbac.authorization.k8s.io/v1
 kind: RoleBinding
 metadata:
   name: {{ include "dnsimple-webhook.fullname" . }}:webhook-authentication-reader
@@ -34,7 +33,7 @@ subjects:
 ---
 # apiserver gets the auth-delegator role to delegate auth decisions to
 # the core apiserver
-apiVersion: {{ $RBACAPIVersion }}
+apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRoleBinding
 metadata:
   name: {{ include "dnsimple-webhook.fullname" . }}:auth-delegator
@@ -54,7 +53,7 @@ subjects:
     namespace: {{ .Release.Namespace }}
 ---
 # Grant cert-manager permission to validate using our apiserver
-apiVersion: {{ $RBACAPIVersion }}
+apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRole
 metadata:
   name: {{ include "dnsimple-webhook.fullname" . }}:domain-solver