diff --git a/iOS/Article/ArticleExtractorButton.swift b/iOS/Article/ArticleExtractorButton.swift
index cc1087888..517c7ec00 100644
--- a/iOS/Article/ArticleExtractorButton.swift
+++ b/iOS/Article/ArticleExtractorButton.swift
@@ -15,7 +15,7 @@ enum ArticleExtractorButtonState {
 	case off
 }
 
-class ArticleExtractorButton: UIButton {
+@MainActor class ArticleExtractorButton: UIButton {
 	
 	private var animatedLayer: CALayer?
 	
diff --git a/iOS/Article/ContextMenuPreviewViewController.swift b/iOS/Article/ContextMenuPreviewViewController.swift
index 3b7e18219..2d6e3e961 100644
--- a/iOS/Article/ContextMenuPreviewViewController.swift
+++ b/iOS/Article/ContextMenuPreviewViewController.swift
@@ -9,7 +9,7 @@
 import UIKit
 import Articles
 
-class ContextMenuPreviewViewController: UIViewController {
+@MainActor class ContextMenuPreviewViewController: UIViewController {
 
 	@IBOutlet weak var blogNameLabel: UILabel!
 	@IBOutlet weak var blogAuthorLabel: UILabel!
diff --git a/iOS/Article/ImageTransition.swift b/iOS/Article/ImageTransition.swift
index 25951b301..dc4a66d6d 100644
--- a/iOS/Article/ImageTransition.swift
+++ b/iOS/Article/ImageTransition.swift
@@ -8,7 +8,7 @@
 
 import UIKit
 
-class ImageTransition: NSObject, UIViewControllerAnimatedTransitioning {
+@MainActor final class ImageTransition: NSObject, UIViewControllerAnimatedTransitioning {
 
 	private weak var webViewController: WebViewController?
 	private let duration = 0.4