diff --git a/service/vendors/pco/webhooks/subscription.go b/service/vendors/pco/webhooks/subscription.go
index 0d10d21..d452f0e 100644
--- a/service/vendors/pco/webhooks/subscription.go
+++ b/service/vendors/pco/webhooks/subscription.go
@@ -8,8 +8,8 @@ type Subscription struct {
 	Active             bool      `jsonapi:"attr,active,omitempty" bson:"active"`
 	ApplicationId      string    `jsonapi:"attr,application_id,omitempty" bson:"application_id"`
 	AuthenticitySecret string    `jsonapi:"attr,authenticity_secret,omitempty" bson:"authenticity_secret"`
-	CreatedAt          time.Time `jsonapi:"attr,created_at,omitempty" bson:"created_at"`
-	UpdatedAt          time.Time `jsonapi:"attr,updated_at,omitempty" bson:"updated_at"`
+	CreatedAt          time.Time `jsonapi:"attr,created_at,rfc3339,omitempty" bson:"created_at"`
+	UpdatedAt          time.Time `jsonapi:"attr,updated_at,rfc3339,omitempty" bson:"updated_at"`
 	Name               string    `jsonapi:"attr,name,omitempty" bson:"name"`
 	Url                string    `jsonapi:"attr,url,omitempty" bson:"url"`
 }
@@ -20,8 +20,8 @@ type WebhookSubscription struct {
 	Active             bool      `jsonapi:"attr,active,omitempty" bson:"active"`
 	ApplicationId      string    `jsonapi:"attr,application_id,omitempty" bson:"application_id"`
 	AuthenticitySecret string    `jsonapi:"attr,authenticity_secret,omitempty" bson:"authenticity_secret"`
-	CreatedAt          time.Time `jsonapi:"attr,created_at,omitempty" bson:"created_at"`
-	UpdatedAt          time.Time `jsonapi:"attr,updated_at,omitempty" bson:"updated_at"`
+	CreatedAt          time.Time `jsonapi:"attr,created_at,rfc3339,omitempty" bson:"created_at"`
+	UpdatedAt          time.Time `jsonapi:"attr,updated_at,rfc3339,omitempty" bson:"updated_at"`
 	Name               string    `jsonapi:"attr,name,omitempty" bson:"name"`
 	Url                string    `jsonapi:"attr,url,omitempty" bson:"url"`
 }
diff --git a/versions.json b/versions.json
index 966e786..f195cd1 100644
--- a/versions.json
+++ b/versions.json
@@ -1,4 +1,4 @@
 {
-	"webhook_version": "0.0.23",
-	"frontend_version": "0.0.23"
+	"webhook_version": "0.0.24",
+	"frontend_version": "0.0.24"
 }