diff --git a/lib/src/image_providers/album_thumbnail_provider.dart b/lib/src/image_providers/album_thumbnail_provider.dart
index 78f1a97..483455a 100644
--- a/lib/src/image_providers/album_thumbnail_provider.dart
+++ b/lib/src/image_providers/album_thumbnail_provider.dart
@@ -58,9 +58,9 @@ class AlbumThumbnailProvider extends ImageProvider<AlbumThumbnailProvider> {
   }
 
   @override
-  bool operator ==(dynamic other) {
+  bool operator ==(Object other) {
     if (other.runtimeType != runtimeType) return false;
-    final AlbumThumbnailProvider typedOther = other;
+    final typedOther = other as AlbumThumbnailProvider;
     return album.id == typedOther.album.id;
   }
 
diff --git a/lib/src/image_providers/photo_provider.dart b/lib/src/image_providers/photo_provider.dart
index 039cb21..52fc851 100644
--- a/lib/src/image_providers/photo_provider.dart
+++ b/lib/src/image_providers/photo_provider.dart
@@ -39,9 +39,9 @@ class PhotoProvider extends ImageProvider<PhotoProvider> {
   }
 
   @override
-  bool operator ==(dynamic other) {
+  bool operator ==(Object other) {
     if (other.runtimeType != runtimeType) return false;
-    final PhotoProvider typedOther = other;
+    final typedOther = other as PhotoProvider;
     return mediumId == typedOther.mediumId;
   }
 
diff --git a/lib/src/image_providers/thumbnail_provider.dart b/lib/src/image_providers/thumbnail_provider.dart
index 6dc511a..1b94cda 100644
--- a/lib/src/image_providers/thumbnail_provider.dart
+++ b/lib/src/image_providers/thumbnail_provider.dart
@@ -61,9 +61,9 @@ class ThumbnailProvider extends ImageProvider<ThumbnailProvider> {
   }
 
   @override
-  bool operator ==(dynamic other) {
+  bool operator ==(Object other) {
     if (other.runtimeType != runtimeType) return false;
-    final ThumbnailProvider typedOther = other;
+    final typedOther = other as ThumbnailProvider;
     return mediumId == typedOther.mediumId;
   }