diff --git a/charts/imagepullsecret-injector/templates/cert.yaml b/charts/imagepullsecret-injector/templates/cert.yaml
index a953e42..aa908b3 100644
--- a/charts/imagepullsecret-injector/templates/cert.yaml
+++ b/charts/imagepullsecret-injector/templates/cert.yaml
@@ -1,3 +1,4 @@
+apiVersion: cert-manager.io/v1
 kind: Certificate
 metadata:
   name: {{ include "imagepullsecret-injector.certificateName" . }}
@@ -9,4 +10,4 @@ spec:
   issuerRef:
     kind: ClusterIssuer
     name: {{ .Values.clusterIssuer }}
-  secretName: {{ include "imagepullsecret-injector.certificateSecretName" . | quote }}
\ No newline at end of file
+  secretName: {{ include "imagepullsecret-injector.certificateSecretName" . | quote }}