diff --git a/lib/widgets/viewer/overlay/histogram.dart b/lib/widgets/viewer/overlay/histogram.dart
index 7c648e5fa..0508c1104 100644
--- a/lib/widgets/viewer/overlay/histogram.dart
+++ b/lib/widgets/viewer/overlay/histogram.dart
@@ -78,7 +78,8 @@ class _ImageHistogramState extends State<ImageHistogram> {
 
   Future<void> _updateLevels(ImageInfo info) async {
     final targetEntry = entry;
-    final newLevels = await viewStateController.getHistogramLevels(info);
+    final forceUpdate = targetEntry.isAnimated;
+    final newLevels = await viewStateController.getHistogramLevels(info, forceUpdate);
     if (mounted) {
       setState(() => _levels = targetEntry == entry ? newLevels : {});
     }
diff --git a/lib/widgets/viewer/view/histogram.dart b/lib/widgets/viewer/view/histogram.dart
index 6bb5fbcae..bd640e8b4 100644
--- a/lib/widgets/viewer/view/histogram.dart
+++ b/lib/widgets/viewer/view/histogram.dart
@@ -18,8 +18,8 @@ mixin HistogramMixin {
   static const int bins = 256;
   static const int normMax = bins - 1;
 
-  Future<HistogramLevels> getHistogramLevels(ImageInfo info) async {
-    if (_levels.isEmpty) {
+  Future<HistogramLevels> getHistogramLevels(ImageInfo info, bool forceUpdate) async {
+    if (_levels.isEmpty || forceUpdate) {
       if (_completer == null) {
         _completer = Completer();
         final data = (await info.image.toByteData(format: ImageByteFormat.rawExtendedRgba128))!;
@@ -31,6 +31,7 @@ mixin HistogramMixin {
         _completer?.complete();
       } else {
         await _completer?.future;
+        _completer = null;
       }
     }
     return _levels;