diff --git a/changelogs/unreleased/7380-kaovilai b/changelogs/unreleased/7380-kaovilai
new file mode 100644
index 0000000000..a95fa4db2d
--- /dev/null
+++ b/changelogs/unreleased/7380-kaovilai
@@ -0,0 +1 @@
+BackupRepositories associated with a BSL are invalidated when BSL is (re-)created.
\ No newline at end of file
diff --git a/pkg/controller/backup_repository_controller.go b/pkg/controller/backup_repository_controller.go
index 12d2930517..a82661c639 100644
--- a/pkg/controller/backup_repository_controller.go
+++ b/pkg/controller/backup_repository_controller.go
@@ -76,7 +76,11 @@ func (r *BackupRepoReconciler) SetupWithManager(mgr ctrl.Manager) error {
 		For(&velerov1api.BackupRepository{}).
 		Watches(s, nil).
 		Watches(&source.Kind{Type: &velerov1api.BackupStorageLocation{}}, kube.EnqueueRequestsFromMapUpdateFunc(r.invalidateBackupReposForBSL),
-			builder.WithPredicates(kube.NewUpdateEventPredicate(r.needInvalidBackupRepo))).
+			builder.WithPredicates(
+				// When BSL updates, check if the backup repositories need to be invalidated
+				kube.NewUpdateEventPredicate(r.needInvalidBackupRepo),
+				// When BSL is created, invalidate any backup repositories that reference it
+				kube.NewCreateEventPredicate(func(client.Object) bool { return true }))).
 		Complete(r)
 }
 
@@ -90,13 +94,13 @@ func (r *BackupRepoReconciler) invalidateBackupReposForBSL(bslObj client.Object)
 		}).AsSelector(),
 	}
 	if err := r.List(context.TODO(), list, options); err != nil {
-		r.logger.WithField("BSL", bsl.Name).WithError(err).Error("unable to list BackupRepositorys")
+		r.logger.WithField("BSL", bsl.Name).WithError(err).Error("unable to list BackupRepositories")
 		return []reconcile.Request{}
 	}
 
 	for i := range list.Items {
 		r.logger.WithField("BSL", bsl.Name).Infof("Invalidating Backup Repository %s", list.Items[i].Name)
-		if err := r.patchBackupRepository(context.Background(), &list.Items[i], repoNotReady("re-establish on BSL change")); err != nil {
+		if err := r.patchBackupRepository(context.Background(), &list.Items[i], repoNotReady("re-establish on BSL change or create")); err != nil {
 			r.logger.WithField("BSL", bsl.Name).WithError(err).Errorf("fail to patch BackupRepository %s", list.Items[i].Name)
 		}
 	}
@@ -104,6 +108,7 @@ func (r *BackupRepoReconciler) invalidateBackupReposForBSL(bslObj client.Object)
 	return []reconcile.Request{}
 }
 
+// needInvalidBackupRepo returns true if the BSL's storage type, bucket, prefix, CACert, or config has changed
 func (r *BackupRepoReconciler) needInvalidBackupRepo(oldObj client.Object, newObj client.Object) bool {
 	oldBSL := oldObj.(*velerov1api.BackupStorageLocation)
 	newBSL := newObj.(*velerov1api.BackupStorageLocation)
diff --git a/pkg/util/kube/event_handler.go b/pkg/util/kube/event_handler.go
index 471a41c81e..e07d173449 100644
--- a/pkg/util/kube/event_handler.go
+++ b/pkg/util/kube/event_handler.go
@@ -26,10 +26,8 @@ import (
 
 type MapUpdateFunc func(client.Object) []reconcile.Request
 
-// EnqueueRequestsFromMapUpdateFunc is for the same purpose with EnqueueRequestsFromMapFunc.
-// Merely, it is more friendly to updating the mapped objects in the MapUpdateFunc, because
-// on Update event, MapUpdateFunc is called for only once with the new object, so if MapUpdateFunc
-// does some update to the mapped objects, the update is done for once
+// EnqueueRequestsFromMapUpdateFunc has the same purpose with handler.EnqueueRequestsFromMapFunc.
+// MapUpdateFunc is simpler on Update event because mapAndEnqueue is called once with the new object. EnqueueRequestsFromMapFunc is called twice with the old and new object.
 func EnqueueRequestsFromMapUpdateFunc(fn MapUpdateFunc) handler.EventHandler {
 	return &enqueueRequestsFromMapFunc{
 		toRequests: fn,