diff --git a/api.go b/api.go
index 459a7b0..220e12a 100644
--- a/api.go
+++ b/api.go
@@ -103,6 +103,8 @@ func (c *cron) Delete(ctx context.Context, name string) error {
 	if _, err := c.client.Delete(ctx, jobKey); err != nil {
 		return err
 	}
+	counterKey := c.key.CounterKey(name)
+	c.collector.Push(counterKey)
 
 	if _, ok := c.queueCache.Load(jobKey); !ok {
 		return nil
diff --git a/internal/informer/informer.go b/internal/informer/informer.go
index 12cefce..2f77c3d 100644
--- a/internal/informer/informer.go
+++ b/internal/informer/informer.go
@@ -160,6 +160,7 @@ func (i *Informer) handleEvent(ev *clientv3.Event) (*Event, error) {
 		if i.yard.HasJustDeleted(string(ev.PrevKv.Key)) {
 			return nil, nil
 		}
+		i.collector.Push(i.key.CounterKey(i.key.JobName(ev.Kv.Key)))
 
 		kv = ev.PrevKv
 	default: