diff --git a/helm/designate-certmanager-webhook/Chart.yaml b/helm/designate-certmanager-webhook/Chart.yaml
index 7e56aa6d..ca9cf5b3 100644
--- a/helm/designate-certmanager-webhook/Chart.yaml
+++ b/helm/designate-certmanager-webhook/Chart.yaml
@@ -2,4 +2,4 @@ apiVersion: v1
 appVersion: "0.2.18"
 description: ACME webhook Implementation for OpenStack Designate
 name: designate-certmanager-webhook
-version: "0.4.0"
+version: "0.5.0"
diff --git a/helm/designate-certmanager-webhook/templates/secret.yaml b/helm/designate-certmanager-webhook/templates/secret.yaml
index 5cb7636f..d22d2e59 100644
--- a/helm/designate-certmanager-webhook/templates/secret.yaml
+++ b/helm/designate-certmanager-webhook/templates/secret.yaml
@@ -1,4 +1,4 @@
-{{- if and .Values.openstack.username .Values.openstack.password }}
+{{- if or (and .Values.openstack.username .Values.openstack.password) (and .Values.openstack.application_credential_id .Values.openstack.application_credential_secret) }}
 apiVersion: v1
 kind: Secret
 metadata:
@@ -16,12 +16,20 @@ data:
   {{- if .Values.openstack.password }}
   OS_PASSWORD: {{ .Values.openstack.password | b64enc | quote }}
   {{- end }}
+  {{- if .Values.openstack.application_credential_id }}
+  OS_APPLICATION_CREDENTIAL_ID: {{ .Values.openstack.application_credential_id | b64enc | quote }}
+  {{- end }}
+  {{- if .Values.openstack.application_credential_secret }}
+  OS_APPLICATION_CREDENTIAL_SECRET: {{ .Values.openstack.application_credential_secret | b64enc | quote }}
+  {{- end }}
   {{- if .Values.openstack.project_id }}
   OS_PROJECT_ID: {{ .Values.openstack.project_id | b64enc | quote }}
   {{- else if .Values.openstack.project_name }}
   OS_PROJECT_NAME: {{ .Values.openstack.project_name | b64enc | quote }}
   {{- else }}
-  {{- fail "project_id or project_name is needed!" }}
+    {{- if ne .Values.openstack.auth_type "v3applicationcredential" }}
+      {{- fail "project_id or project_name is needed!" }}
+    {{- end }}
   {{- end }}
   {{- if .Values.openstack.region_name }}
   OS_REGION_NAME: {{ .Values.openstack.region_name | b64enc | quote }}
@@ -32,4 +40,7 @@ data:
   {{- if .Values.openstack.domain_name }}
   OS_DOMAIN_NAME: {{ .Values.openstack.domain_name | b64enc | quote }}
   {{- end }}
+  {{- if .Values.openstack.auth_type }}
+  OS_AUTH_TYPE: {{ .Values.openstack.auth_type | b64enc | quote }}
+  {{- end }}
 {{- end }}
diff --git a/helm/designate-certmanager-webhook/values.yaml b/helm/designate-certmanager-webhook/values.yaml
index ab2132aa..539cecb9 100644
--- a/helm/designate-certmanager-webhook/values.yaml
+++ b/helm/designate-certmanager-webhook/values.yaml
@@ -30,6 +30,8 @@ credentialsSecret: cloud-credentials
 openstack:
   username: ""
   password: ""
+  application_credential_id: ""
+  application_credential_secret: ""
   project_id: ""
   project_name: "" # Use project_id OR project_name
   region_name: ""