diff --git a/main.go b/main.go
index 85aeac9..0f65041 100644
--- a/main.go
+++ b/main.go
@@ -11,6 +11,7 @@ import (
 
 	"github.com/jetstack/cert-manager/pkg/acme/webhook/apis/acme/v1alpha1"
 	"github.com/jetstack/cert-manager/pkg/acme/webhook/cmd"
+	certmanagerv1 "github.com/jetstack/cert-manager/pkg/apis/certmanager/v1alpha1"
 )
 
 var GroupName = os.Getenv("GROUP_NAME")
@@ -64,8 +65,8 @@ type customDNSProviderConfig struct {
 	// These fields will be set by users in the
 	// `issuer.spec.acme.dns01.providers.webhook.config` field.
 
-	//Email           string `json:"email"`
-	//APIKeySecretRef v1alpha1.SecretKeySelector `json:"apiKeySecretRef"`
+	Email           string `json:"email"`
+	APIKeySecretRef certmanagerv1.SecretKeySelector `json:"apiKeySecretRef"`
 }
 
 // Name is used as the name for this DNS solver when referencing it on the ACME