diff --git a/Mac/AppAssets.swift b/Mac/AppAssets.swift
index a2201d631..d5220bc1e 100644
--- a/Mac/AppAssets.swift
+++ b/Mac/AppAssets.swift
@@ -40,7 +40,7 @@ struct AppAssets {
 		return RSImage(named: "accountNewsBlur")
 	}()
 	
-	@available(macOS 10.16, *)
+	@available(macOS 11.0, *)
 	static var addNewSidebarItemImage: RSImage = {
 		return NSImage(systemSymbolName: "plus", accessibilityDescription: nil)!
 	}()
@@ -77,7 +77,7 @@ struct AppAssets {
 		return RSImage(named: "articleExtractorProgress4")
 	}()
 	
-	@available(macOS 10.16, *)
+	@available(macOS 11.0, *)
 	static var cleanUpImage: RSImage = {
 		return NSImage(systemSymbolName: "wind", accessibilityDescription: nil)!
 	}()
@@ -119,7 +119,7 @@ struct AppAssets {
 	}()
 
 	static var masterFolderImage: IconImage = {
-		if #available(macOS 10.16, *) {
+		if #available(macOS 11.0, *) {
 			let image = NSImage(systemSymbolName: "folder", accessibilityDescription: nil)!
 			let coloredImage = image.tinted(with: NSColor(named: "AccentColor")!)
 			return IconImage(coloredImage, isSymbol: true)
@@ -132,18 +132,18 @@ struct AppAssets {
 		return RSImage(named: "markAllAsRead")!
 	}()
 
-	@available(macOS 10.16, *)
+	@available(macOS 11.0, *)
 	static var nextUnreadImage: RSImage = {
 		return NSImage(systemSymbolName: "chevron.down.circle", accessibilityDescription: nil)!
 	}()
 
-	@available(macOS 10.16, *)
+	@available(macOS 11.0, *)
 	static var openInBrowserImage: RSImage = {
 		return NSImage(systemSymbolName: "safari", accessibilityDescription: nil)!
 	}()
 
 	static var preferencesToolbarAccountsImage: RSImage = {
-		if #available(macOS 10.16, *) {
+		if #available(macOS 11.0, *) {
 			return NSImage(systemSymbolName: "at", accessibilityDescription: nil)!
 		} else {
 			return NSImage(named: NSImage.userAccountsName)!
@@ -151,7 +151,7 @@ struct AppAssets {
 	}()
 	
 	static var preferencesToolbarExtensionsImage: RSImage = {
-		if #available(macOS 10.16, *) {
+		if #available(macOS 11.0, *) {
 			return NSImage(named: "preferencesToolbarExtensions")!
 		} else {
 			return NSImage(contentsOfFile: "/System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/KEXT.icns")!
@@ -159,7 +159,7 @@ struct AppAssets {
 	}()
 	
 	static var preferencesToolbarGeneralImage: RSImage = {
-		if #available(macOS 10.16, *) {
+		if #available(macOS 11.0, *) {
 			return NSImage(systemSymbolName: "gearshape", accessibilityDescription: nil)!
 		} else {
 			return NSImage(named: NSImage.preferencesGeneralName)!
@@ -167,24 +167,24 @@ struct AppAssets {
 	}()
 	
 	static var preferencesToolbarAdvancedImage: RSImage = {
-		if #available(macOS 10.16, *) {
+		if #available(macOS 11.0, *) {
 			return NSImage(systemSymbolName: "gearshape.2", accessibilityDescription: nil)!
 		} else {
 			return NSImage(named: NSImage.advancedName)!
 		}
 	}()
 
-	@available(macOS 10.16, *)
+	@available(macOS 11.0, *)
 	static var readClosedImage: RSImage = {
 		return NSImage(systemSymbolName: "largecircle.fill.circle", accessibilityDescription: nil)!
 	}()
 
-	@available(macOS 10.16, *)
+	@available(macOS 11.0, *)
 	static var readOpenImage: RSImage = {
 		return NSImage(systemSymbolName: "circle", accessibilityDescription: nil)!
 	}()
 	
-	@available(macOS 10.16, *)
+	@available(macOS 11.0, *)
 	static var refreshImage: RSImage = {
 		return NSImage(systemSymbolName: "arrow.clockwise", accessibilityDescription: nil)!
 	}()
@@ -193,23 +193,23 @@ struct AppAssets {
 		return IconImage(RSImage(named: NSImage.smartBadgeTemplateName)!, isSymbol: true)
 	}()
 	
-	@available(macOS 10.16, *)
+	@available(macOS 11.0, *)
 	static var shareImage: RSImage = {
 		return NSImage(systemSymbolName: "square.and.arrow.up", accessibilityDescription: nil)!
 	}()
 
-	@available(macOS 10.16, *)
+	@available(macOS 11.0, *)
 	static var starClosedImage: RSImage = {
 		return NSImage(systemSymbolName: "star.fill", accessibilityDescription: nil)!
 	}()
 
-	@available(macOS 10.16, *)
+	@available(macOS 11.0, *)
 	static var starOpenImage: RSImage = {
 		return NSImage(systemSymbolName: "star", accessibilityDescription: nil)!
 	}()
 	
 	static var starredFeedImage: IconImage = {
-		if #available(macOS 10.16, *) {
+		if #available(macOS 11.0, *) {
 			let image = NSImage(systemSymbolName: "star.fill", accessibilityDescription: nil)!
 			let coloredImage = image.tinted(with: NSColor(named: "StarColor")!)
 			return IconImage(coloredImage, isSymbol: true)
@@ -219,7 +219,7 @@ struct AppAssets {
 	}()
 
 	static var timelineStar: RSImage! = {
-		if #available(macOS 10.16, *) {
+		if #available(macOS 11.0, *) {
 			let image = NSImage(systemSymbolName: "star.fill", accessibilityDescription: nil)!
 			let coloredImage = image.tinted(with: NSColor(named: "StarColor")!)
 			return coloredImage
@@ -229,7 +229,7 @@ struct AppAssets {
 	}()
 
 	static var todayFeedImage: IconImage = {
-		if #available(macOS 10.16, *) {
+		if #available(macOS 11.0, *) {
 			let image = NSImage(systemSymbolName: "sun.max.fill", accessibilityDescription: nil)!
 			let coloredImage = image.tinted(with: .orange)
 			return IconImage(coloredImage, isSymbol: true)
@@ -239,7 +239,7 @@ struct AppAssets {
 	}()
 
 	static var unreadFeedImage: IconImage = {
-		if #available(macOS 10.16, *) {
+		if #available(macOS 11.0, *) {
 			let image = NSImage(systemSymbolName: "largecircle.fill.circle", accessibilityDescription: nil)!
 			let coloredImage = image.tinted(with: NSColor(named: "AccentColor")!)
 			return IconImage(coloredImage, isSymbol: true)
diff --git a/Mac/AppDelegate.swift b/Mac/AppDelegate.swift
index 855f85adf..33960838d 100644
--- a/Mac/AppDelegate.swift
+++ b/Mac/AppDelegate.swift
@@ -351,7 +351,7 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSUserInterfaceValidations,
 	
 	func createMainWindowController() -> MainWindowController {
 		let controller: MainWindowController
-		if #available(macOS 10.16, *) {
+		if #available(macOS 11.0, *) {
 			let storyboard = NSStoryboard(name: NSStoryboard.Name("MainWindow"), bundle: nil)
 			controller = storyboard.instantiateController(withIdentifier: "UnifiedWindowController") as! MainWindowController
 		} else {
diff --git a/Mac/MainWindow/MainWindowController.swift b/Mac/MainWindow/MainWindowController.swift
index 7f0ed93d6..f7d0d2657 100644
--- a/Mac/MainWindow/MainWindowController.swift
+++ b/Mac/MainWindow/MainWindowController.swift
@@ -61,7 +61,7 @@ class MainWindowController : NSWindowController, NSUserInterfaceValidations {
 
 		sharingServicePickerDelegate = SharingServicePickerDelegate(self.window)
 		
-		if #available(macOS 10.16, *) {
+		if #available(macOS 11.0, *) {
 			DispatchQueue.main.async {
 				let toolbar = NSToolbar(identifier: "MainWindowToolbar")
 				toolbar.allowsUserCustomization = true
@@ -714,7 +714,7 @@ extension NSToolbarItem.Identifier {
 extension MainWindowController: NSToolbarDelegate {
 
 	func toolbar(_ toolbar: NSToolbar, itemForItemIdentifier itemIdentifier: NSToolbarItem.Identifier, willBeInsertedIntoToolbar flag: Bool) -> NSToolbarItem? {
-		if #available(macOS 10.16, *) {
+		if #available(macOS 11.0, *) {
 
 			switch itemIdentifier {
 
@@ -779,7 +779,7 @@ extension MainWindowController: NSToolbarDelegate {
 	}
 	
 	func toolbarAllowedItemIdentifiers(_ toolbar: NSToolbar) -> [NSToolbarItem.Identifier] {
-		if #available(macOS 10.16, *) {
+		if #available(macOS 11.0, *) {
 			return [
 				.refresh,
 				.newSidebarItemMenu,
@@ -816,7 +816,7 @@ extension MainWindowController: NSToolbarDelegate {
 	}
 	
 	func toolbarDefaultItemIdentifiers(_ toolbar: NSToolbar) -> [NSToolbarItem.Identifier] {
-		if #available(macOS 10.16, *) {
+		if #available(macOS 11.0, *) {
 			return [
 				.refresh,
 				.newSidebarItemMenu,
@@ -860,7 +860,7 @@ extension MainWindowController: NSToolbarDelegate {
 			button.sendAction(on: .leftMouseDown)
 		}
 
-		if #available(macOS 10.16, *) {
+		if #available(macOS 11.0, *) {
 			if item.itemIdentifier == .search, let searchItem = item as? NSSearchToolbarItem {
 				searchItem.searchField.delegate = self
 				searchItem.searchField.target = self
@@ -882,7 +882,7 @@ extension MainWindowController: NSToolbarDelegate {
 			return
 		}
 
-		if #available(macOS 10.16, *) {
+		if #available(macOS 11.0, *) {
 			if item.itemIdentifier == .search, let searchItem = item as? NSSearchToolbarItem {
 				searchItem.searchField.delegate = nil
 				searchItem.searchField.target = nil
@@ -1007,7 +1007,7 @@ private extension MainWindowController {
 			menuItem.title = commandName
 		}
 		
-		if #available(macOS 10.16, *), let toolbarItem = item as? NSToolbarItem, let button = toolbarItem.view as? NSButton {
+		if #available(macOS 11.0, *), let toolbarItem = item as? NSToolbarItem, let button = toolbarItem.view as? NSButton {
 			button.image = markingRead ? AppAssets.readClosedImage : AppAssets.readOpenImage
 		}
 		
@@ -1094,7 +1094,7 @@ private extension MainWindowController {
 			menuItem.title = commandName
 		}
 
-		if #available(macOS 10.16, *), let toolbarItem = item as? NSToolbarItem, let button = toolbarItem.view as? NSButton {
+		if #available(macOS 11.0, *), let toolbarItem = item as? NSToolbarItem, let button = toolbarItem.view as? NSButton {
 			button.image = starring ? AppAssets.starOpenImage : AppAssets.starClosedImage
 		}
 
@@ -1168,7 +1168,7 @@ private extension MainWindowController {
 		
 		if displayName != nil {
 			window?.title = displayName!
-			if #available(macOS 10.16, *) {
+			if #available(macOS 11.0, *) {
 				window?.subtitle = "\(unreadCount ?? 0) unread"
 			}
 		} else {
diff --git a/Mac/MainWindow/Sidebar/Cell/SidebarCellAppearance.swift b/Mac/MainWindow/Sidebar/Cell/SidebarCellAppearance.swift
index 88b6e77b3..c228d2255 100644
--- a/Mac/MainWindow/Sidebar/Cell/SidebarCellAppearance.swift
+++ b/Mac/MainWindow/Sidebar/Cell/SidebarCellAppearance.swift
@@ -23,7 +23,7 @@ struct SidebarCellAppearance: Equatable {
 			textFieldFontSize = 11
 		case .large:
 			imageSize = CGSize(width: 24, height: 24)
-			if #available(macOS 10.16, *) {
+			if #available(macOS 11.0, *) {
 				textFieldFontSize = 15
 			} else {
 				textFieldFontSize = 13
diff --git a/Shared/Article Rendering/ArticleRenderer.swift b/Shared/Article Rendering/ArticleRenderer.swift
index 39cf38b5d..0abdb3e5a 100644
--- a/Shared/Article Rendering/ArticleRenderer.swift	
+++ b/Shared/Article Rendering/ArticleRenderer.swift	
@@ -266,7 +266,7 @@ private extension ArticleRenderer {
 	func styleSubstitutions() -> [String: String] {
 		var d = [String: String]()
 		
-		if #available(macOS 10.16, *) {
+		if #available(macOS 11.0, *) {
 			let bodyFont = NSFont.preferredFont(forTextStyle: .body)
 			d["font-size"] = String(describing: Int(round(bodyFont.pointSize * 1.33)))
 		}