diff --git a/lib/components/updater.dart b/lib/components/updater.dart
index 4885730..326b7f9 100644
--- a/lib/components/updater.dart
+++ b/lib/components/updater.dart
@@ -24,7 +24,6 @@ class UpdateBottomSheet extends StatefulWidget {
 class _UpdateBottomSheetState extends State<UpdateBottomSheet> {
   static Map<String, _DownloadTask> downloading = {};
   bool failed = false;
-  double? progress;
 
   @override
   Widget build(BuildContext context) {
@@ -79,7 +78,7 @@ class _UpdateBottomSheetState extends State<UpdateBottomSheet> {
                                 listenable: downloading[widget.url]!.progress,
                                 builder: (context, _) {
                                   return CircularProgressIndicator(
-                                      strokeWidth: 2, value: progress, backgroundColor: Theme.of(context).colorScheme.surfaceContainerHighest);
+                                      strokeWidth: 2, value: downloading[widget.url]!.progress.value, backgroundColor: Theme.of(context).colorScheme.surfaceContainerHighest);
                                 })),
                       ])
                     : failed
diff --git a/packages/api/lib/src/models.dart b/packages/api/lib/src/models.dart
index 6b7beea..1723fb7 100644
--- a/packages/api/lib/src/models.dart
+++ b/packages/api/lib/src/models.dart
@@ -514,7 +514,7 @@ class UpdateResp {
 
   UpdateResp.fromJson(Json json)
       : assets = List.generate(json['assets'].length, (index) => UpdateRespAsset.fromJson(json['assets'][index])),
-        tagName = Version.fromString(json['tag_name']),
+        tagName = Version.fromString(json['tag_name'].substring(1)),
         comment = json['body'],
         createAt = (json['published_at'] as String).toDateTime();
 }