diff --git a/darwin/mapkit_flutter/Sources/mapkit_flutter/Annotations/AnnotationIcon.swift b/darwin/mapkit_flutter/Sources/mapkit_flutter/Annotations/AnnotationIcon.swift
index a3bdd27..afa64ee 100644
--- a/darwin/mapkit_flutter/Sources/mapkit_flutter/Annotations/AnnotationIcon.swift
+++ b/darwin/mapkit_flutter/Sources/mapkit_flutter/Annotations/AnnotationIcon.swift
@@ -44,7 +44,8 @@ class AnnotationIcon: Equatable {
         case .image:
             self.iconType = .image
             if let data = icon.imageBytes?.data {
-                self.image = PlatformImage.fromImageData(data)
+                self.image = PlatformImage.fromImageData(
+                    data, pixelRatio: CGFloat(icon.imagePixelRatio ?? 1))
             }
         }
     }
diff --git a/darwin/mapkit_flutter/Sources/mapkit_flutter/MapKitPlugin.swift b/darwin/mapkit_flutter/Sources/mapkit_flutter/MapKitPlugin.swift
index b339eea..2860037 100644
--- a/darwin/mapkit_flutter/Sources/mapkit_flutter/MapKitPlugin.swift
+++ b/darwin/mapkit_flutter/Sources/mapkit_flutter/MapKitPlugin.swift
@@ -15,6 +15,9 @@ public final class MapKitPlugin: NSObject, FlutterPlugin {
         // Plugin registration runs on the main thread; the factory and view
         // host are main-actor isolated. macOS's GeneratedPluginRegistrant
         // calls this from a nonisolated context, so assume isolation here.
+        // The registrar hand-off shares that guarantee: it never leaves the
+        // main thread, it just isn't Sendable-provable.
+        nonisolated(unsafe) let registrar = registrar
         MainActor.assumeIsolated {
             let factory = MapKitViewFactory(withRegistrar: registrar)
             #if os(iOS)
diff --git a/darwin/mapkit_flutter/Sources/mapkit_flutter/MapView/FlutterMapView.swift b/darwin/mapkit_flutter/Sources/mapkit_flutter/MapView/FlutterMapView.swift
index 4a4acc6..d3526c8 100644
--- a/darwin/mapkit_flutter/Sources/mapkit_flutter/MapView/FlutterMapView.swift
+++ b/darwin/mapkit_flutter/Sources/mapkit_flutter/MapView/FlutterMapView.swift
@@ -10,7 +10,10 @@ import AppKit
 import FlutterMacOS
 #endif
 
-class FlutterMapView: MKMapView, PlatformGestureRecognizerDelegate, CLLocationManagerDelegate {
+// `@preconcurrency`: CLLocationManagerDelegate is nonisolated, but callbacks
+// arrive on the thread that created the manager — main, since the manager is
+// an instance property of this MainActor-isolated view.
+class FlutterMapView: MKMapView, PlatformGestureRecognizerDelegate, @preconcurrency CLLocationManagerDelegate {
     weak var flutterApi: MapKitFlutterApi?
 
     /// Camera handed over before the first layout pass; re-applied once the
diff --git a/darwin/mapkit_flutter/Sources/mapkit_flutter/MapView/MapKitViewHost.swift b/darwin/mapkit_flutter/Sources/mapkit_flutter/MapView/MapKitViewHost.swift
index cd07a43..95cb7ec 100644
--- a/darwin/mapkit_flutter/Sources/mapkit_flutter/MapView/MapKitViewHost.swift
+++ b/darwin/mapkit_flutter/Sources/mapkit_flutter/MapView/MapKitViewHost.swift
@@ -297,7 +297,12 @@ extension MapKitViewHost {
         snapshotOptions.region = self.mapView.region
         snapshotOptions.size = self.mapView.frame.size
         #if os(iOS)
-        snapshotOptions.scale = PlatformScreen.scale
+        // Unspecified traits report displayScale == 0; leaving `scale` unset
+        // falls back to MapKit's main-screen default.
+        let displayScale = self.mapView.traitCollection.displayScale
+        if displayScale > 0 {
+            snapshotOptions.scale = displayScale
+        }
         #endif
         snapshotOptions.showsBuildings = options.showsBuildings
         snapshotOptions.pointOfInterestFilter = options.showsPointsOfInterest ? .includingAll : .excludingAll
@@ -367,7 +372,10 @@ extension MapKitViewHost {
 }
 
 #if os(iOS)
-extension MapKitViewHost: FlutterPlatformView {
+// `@preconcurrency`: FlutterPlatformView is nonisolated; the engine calls
+// `view()` on the platform thread (main), same as the MapKitHostApi
+// conformance above.
+extension MapKitViewHost: @preconcurrency FlutterPlatformView {
     public func view() -> UIView {
         return contentView
     }
diff --git a/darwin/mapkit_flutter/Sources/mapkit_flutter/Overlays/FlutterPolyline.swift b/darwin/mapkit_flutter/Sources/mapkit_flutter/Overlays/FlutterPolyline.swift
index 8957390..389e4e9 100644
--- a/darwin/mapkit_flutter/Sources/mapkit_flutter/Overlays/FlutterPolyline.swift
+++ b/darwin/mapkit_flutter/Sources/mapkit_flutter/Overlays/FlutterPolyline.swift
@@ -161,6 +161,7 @@ final class FlutterGeodesicPolyline: MKGeodesicPolyline, StyledPolyline, @unchec
 
 public extension MKPolyline {
     // maxMeters is the preferred distance offset from the self to be acknowledged as a touch
+    @MainActor
     func contains(coordinate: CLLocationCoordinate2D, mapView: MKMapView, maxMeters: Int = 8) -> Bool {
         let distance: Double = distanceOf(pt: MKMapPoint.init(coordinate), toMultipPoint: self)
         return distance <= meters(fromPixel: maxMeters, at: coordinate, view: mapView)
@@ -200,6 +201,7 @@ public extension MKPolyline {
         return distance
     }
 
+    @MainActor
     private func meters(fromPixel pixel: Int, at touchCoordinate: CLLocationCoordinate2D, view: MKMapView) -> Double {
         let touchPoint: CGPoint = view.convert(touchCoordinate, toPointTo: view)
         let maxOffsetPoint = CGPoint(x: touchPoint.x + CGFloat(pixel), y: touchPoint.y)
diff --git a/darwin/mapkit_flutter/Sources/mapkit_flutter/Utils/PlatformAliases.swift b/darwin/mapkit_flutter/Sources/mapkit_flutter/Utils/PlatformAliases.swift
index 2f94be2..4409e8e 100644
--- a/darwin/mapkit_flutter/Sources/mapkit_flutter/Utils/PlatformAliases.swift
+++ b/darwin/mapkit_flutter/Sources/mapkit_flutter/Utils/PlatformAliases.swift
@@ -42,18 +42,6 @@ extension PlatformView {
     }
 }
 
-enum PlatformScreen {
-    /// Backing scale factor of the main screen (`UIScreen.scale` /
-    /// `NSScreen.backingScaleFactor`). Defaults to 2 when unavailable.
-    static var scale: CGFloat {
-        #if os(iOS)
-        return UIScreen.main.scale
-        #elseif os(macOS)
-        return NSScreen.main?.backingScaleFactor ?? 2
-        #endif
-    }
-}
-
 extension PlatformImage {
     /// An SF Symbol image by name (`UIImage(systemName:)` /
     /// `NSImage(systemSymbolName:)`).
@@ -65,19 +53,18 @@ extension PlatformImage {
         #endif
     }
 
-    /// A bitmap image from raw PNG/image bytes, sized in points to match the
-    /// screen scale (`UIImage(data:scale:)` has no AppKit equivalent, so the
-    /// macOS path divides the pixel size by the backing scale).
-    static func fromImageData(_ data: Data) -> PlatformImage? {
+    /// A bitmap image from raw PNG/image bytes, sized in points via the
+    /// Dart-supplied pixel ratio of the bytes (`UIImage(data:scale:)` has no
+    /// AppKit equivalent, so the macOS path divides the pixel size by it).
+    static func fromImageData(_ data: Data, pixelRatio: CGFloat) -> PlatformImage? {
         #if os(iOS)
-        return UIImage(data: data, scale: PlatformScreen.scale)
+        return UIImage(data: data, scale: pixelRatio)
         #elseif os(macOS)
         guard let image = NSImage(data: data) else { return nil }
         if let rep = image.representations.first {
-            let scale = PlatformScreen.scale
             image.size = NSSize(
-                width: CGFloat(rep.pixelsWide) / scale,
-                height: CGFloat(rep.pixelsHigh) / scale
+                width: CGFloat(rep.pixelsWide) / pixelRatio,
+                height: CGFloat(rep.pixelsHigh) / pixelRatio
             )
         }
         return image
diff --git a/darwin/mapkit_flutter/Sources/mapkit_flutter/messages.g.swift b/darwin/mapkit_flutter/Sources/mapkit_flutter/messages.g.swift
index f4066df..8591ea0 100644
--- a/darwin/mapkit_flutter/Sources/mapkit_flutter/messages.g.swift
+++ b/darwin/mapkit_flutter/Sources/mapkit_flutter/messages.g.swift
@@ -1,4 +1,4 @@
-// Autogenerated from Pigeon (v27.1.0), do not edit directly.
+// Autogenerated from Pigeon (v27.3.0), do not edit directly.
 // See also: https://pub.dev/packages/pigeon
 
 import Foundation
@@ -533,6 +533,8 @@ struct PlatformAnnotationIcon: Hashable, CustomStringConvertible {
   var glyphTintArgb: Int64? = nil
   /// Raw PNG bytes for the `image` variant (`MKAnnotationView.image`).
   var imageBytes: FlutterStandardTypedData? = nil
+  /// Pixels per logical point in [imageBytes] (`UIImage(data:scale:)`).
+  var imagePixelRatio: Double? = nil
 
 
   // swift-format-ignore: AlwaysUseLowerCamelCase
@@ -543,6 +545,7 @@ struct PlatformAnnotationIcon: Hashable, CustomStringConvertible {
     let glyphSystemImage: String? = nilOrValue(pigeonVar_list[3])
     let glyphTintArgb: Int64? = nilOrValue(pigeonVar_list[4])
     let imageBytes: FlutterStandardTypedData? = nilOrValue(pigeonVar_list[5])
+    let imagePixelRatio: Double? = nilOrValue(pigeonVar_list[6])
 
     return PlatformAnnotationIcon(
       type: type,
@@ -550,7 +553,8 @@ struct PlatformAnnotationIcon: Hashable, CustomStringConvertible {
       glyphText: glyphText,
       glyphSystemImage: glyphSystemImage,
       glyphTintArgb: glyphTintArgb,
-      imageBytes: imageBytes
+      imageBytes: imageBytes,
+      imagePixelRatio: imagePixelRatio
     )
   }
   func toList() -> [Any?] {
@@ -561,13 +565,14 @@ struct PlatformAnnotationIcon: Hashable, CustomStringConvertible {
       glyphSystemImage,
       glyphTintArgb,
       imageBytes,
+      imagePixelRatio,
     ]
   }
   static func == (lhs: PlatformAnnotationIcon, rhs: PlatformAnnotationIcon) -> Bool {
     if Swift.type(of: lhs) != Swift.type(of: rhs) {
       return false
     }
-    return messagesPigeonInternal.deepEquals(lhs.type, rhs.type) && messagesPigeonInternal.deepEquals(lhs.markerTintArgb, rhs.markerTintArgb) && messagesPigeonInternal.deepEquals(lhs.glyphText, rhs.glyphText) && messagesPigeonInternal.deepEquals(lhs.glyphSystemImage, rhs.glyphSystemImage) && messagesPigeonInternal.deepEquals(lhs.glyphTintArgb, rhs.glyphTintArgb) && messagesPigeonInternal.deepEquals(lhs.imageBytes, rhs.imageBytes)
+    return messagesPigeonInternal.deepEquals(lhs.type, rhs.type) && messagesPigeonInternal.deepEquals(lhs.markerTintArgb, rhs.markerTintArgb) && messagesPigeonInternal.deepEquals(lhs.glyphText, rhs.glyphText) && messagesPigeonInternal.deepEquals(lhs.glyphSystemImage, rhs.glyphSystemImage) && messagesPigeonInternal.deepEquals(lhs.glyphTintArgb, rhs.glyphTintArgb) && messagesPigeonInternal.deepEquals(lhs.imageBytes, rhs.imageBytes) && messagesPigeonInternal.deepEquals(lhs.imagePixelRatio, rhs.imagePixelRatio)
   }
 
   func hash(into hasher: inout Hasher) {
@@ -578,10 +583,11 @@ struct PlatformAnnotationIcon: Hashable, CustomStringConvertible {
     messagesPigeonInternal.deepHash(value: glyphSystemImage, hasher: &hasher)
     messagesPigeonInternal.deepHash(value: glyphTintArgb, hasher: &hasher)
     messagesPigeonInternal.deepHash(value: imageBytes, hasher: &hasher)
+    messagesPigeonInternal.deepHash(value: imagePixelRatio, hasher: &hasher)
   }
 
   public var description: String {
-    return "PlatformAnnotationIcon(type: \(String(describing: type)), markerTintArgb: \(String(describing: markerTintArgb)), glyphText: \(String(describing: glyphText)), glyphSystemImage: \(String(describing: glyphSystemImage)), glyphTintArgb: \(String(describing: glyphTintArgb)), imageBytes: \(String(describing: imageBytes)))"
+    return "PlatformAnnotationIcon(type: \(String(describing: type)), markerTintArgb: \(String(describing: markerTintArgb)), glyphText: \(String(describing: glyphText)), glyphSystemImage: \(String(describing: glyphSystemImage)), glyphTintArgb: \(String(describing: glyphTintArgb)), imageBytes: \(String(describing: imageBytes)), imagePixelRatio: \(String(describing: imagePixelRatio)))"
   }
 }
 
@@ -1907,23 +1913,23 @@ class MapKitHostApiSetup {
 ///
 /// Generated protocol from Pigeon that represents Flutter messages that can be called from Swift.
 protocol MapKitFlutterApiProtocol {
-  func onCameraMoveStarted(completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onCameraMove(camera cameraArg: PlatformMapCamera, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onCameraIdle(completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onAnnotationTap(annotationId annotationIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onAnnotationDragStart(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onAnnotationDrag(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onAnnotationDragEnd(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onCalloutTap(annotationId annotationIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onPolylineTap(polylineId polylineIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onPolygonTap(polygonId polygonIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onCircleTap(circleId circleIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onMapTap(coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onMapLongPress(coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
+  func onCameraMoveStarted(completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onCameraMove(camera cameraArg: PlatformMapCamera, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onCameraIdle(completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onAnnotationTap(annotationId annotationIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onAnnotationDragStart(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onAnnotationDrag(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onAnnotationDragEnd(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onCalloutTap(annotationId annotationIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onPolylineTap(polylineId polylineIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onPolygonTap(polygonId polygonIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onCircleTap(circleId circleIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onMapTap(coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onMapLongPress(coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
   /// `MKMapViewDelegate.mapViewDidFailLoadingMap(_:withError:)`.
-  func onDidFailLoadingMap(error errorArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
+  func onDidFailLoadingMap(error errorArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
   /// `MKMapViewDelegate.mapView(_:didFailToLocateUserWithError:)`.
-  func onDidFailToLocateUser(error errorArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
+  func onDidFailToLocateUser(error errorArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
 }
 class MapKitFlutterApi: MapKitFlutterApiProtocol {
   private let binaryMessenger: FlutterBinaryMessenger
@@ -1935,7 +1941,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
   var codec: MessagesPigeonCodec {
     return MessagesPigeonCodec.shared
   }
-  func onCameraMoveStarted(completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onCameraMoveStarted(completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onCameraMoveStarted\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage(nil) { response in
@@ -1953,7 +1959,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onCameraMove(camera cameraArg: PlatformMapCamera, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onCameraMove(camera cameraArg: PlatformMapCamera, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onCameraMove\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([cameraArg] as [Any?]) { response in
@@ -1971,7 +1977,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onCameraIdle(completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onCameraIdle(completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onCameraIdle\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage(nil) { response in
@@ -1989,7 +1995,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onAnnotationTap(annotationId annotationIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onAnnotationTap(annotationId annotationIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onAnnotationTap\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([annotationIdArg] as [Any?]) { response in
@@ -2007,7 +2013,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onAnnotationDragStart(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onAnnotationDragStart(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onAnnotationDragStart\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([annotationIdArg, coordinateArg] as [Any?]) { response in
@@ -2025,7 +2031,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onAnnotationDrag(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onAnnotationDrag(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onAnnotationDrag\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([annotationIdArg, coordinateArg] as [Any?]) { response in
@@ -2043,7 +2049,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onAnnotationDragEnd(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onAnnotationDragEnd(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onAnnotationDragEnd\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([annotationIdArg, coordinateArg] as [Any?]) { response in
@@ -2061,7 +2067,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onCalloutTap(annotationId annotationIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onCalloutTap(annotationId annotationIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onCalloutTap\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([annotationIdArg] as [Any?]) { response in
@@ -2079,7 +2085,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onPolylineTap(polylineId polylineIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onPolylineTap(polylineId polylineIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onPolylineTap\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([polylineIdArg] as [Any?]) { response in
@@ -2097,7 +2103,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onPolygonTap(polygonId polygonIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onPolygonTap(polygonId polygonIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onPolygonTap\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([polygonIdArg] as [Any?]) { response in
@@ -2115,7 +2121,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onCircleTap(circleId circleIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onCircleTap(circleId circleIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onCircleTap\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([circleIdArg] as [Any?]) { response in
@@ -2133,7 +2139,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onMapTap(coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onMapTap(coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onMapTap\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([coordinateArg] as [Any?]) { response in
@@ -2151,7 +2157,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onMapLongPress(coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onMapLongPress(coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onMapLongPress\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([coordinateArg] as [Any?]) { response in
@@ -2170,7 +2176,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
     }
   }
   /// `MKMapViewDelegate.mapViewDidFailLoadingMap(_:withError:)`.
-  func onDidFailLoadingMap(error errorArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onDidFailLoadingMap(error errorArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onDidFailLoadingMap\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([errorArg] as [Any?]) { response in
@@ -2189,7 +2195,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
     }
   }
   /// `MKMapViewDelegate.mapView(_:didFailToLocateUserWithError:)`.
-  func onDidFailToLocateUser(error errorArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onDidFailToLocateUser(error errorArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onDidFailToLocateUser\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([errorArg] as [Any?]) { response in
diff --git a/ios/mapkit_flutter/Sources/mapkit_flutter/messages.g.swift b/ios/mapkit_flutter/Sources/mapkit_flutter/messages.g.swift
index 7bbf549..8591ea0 100644
--- a/ios/mapkit_flutter/Sources/mapkit_flutter/messages.g.swift
+++ b/ios/mapkit_flutter/Sources/mapkit_flutter/messages.g.swift
@@ -1,4 +1,4 @@
-// Autogenerated from Pigeon (v27.1.0), do not edit directly.
+// Autogenerated from Pigeon (v27.3.0), do not edit directly.
 // See also: https://pub.dev/packages/pigeon
 
 import Foundation
@@ -121,18 +121,13 @@ enum messagesPigeonInternal {
     case (let lhsDictionary, let rhsDictionary) as ([AnyHashable: Any?], [AnyHashable: Any?]):
       guard lhsDictionary.count == rhsDictionary.count else { return false }
       for (lhsKey, lhsValue) in lhsDictionary {
-        var found = false
-        for (rhsKey, rhsValue) in rhsDictionary {
-          if deepEquals(lhsKey, rhsKey) {
-            if deepEquals(lhsValue, rhsValue) {
-              found = true
-              break
-            } else {
-              return false
-            }
+        if let rhsValue = rhsDictionary[lhsKey] {
+          if !deepEquals(lhsValue, rhsValue) {
+            return false
           }
+        } else {
+          return false
         }
-        if !found { return false }
       }
       return true
 
@@ -538,6 +533,8 @@ struct PlatformAnnotationIcon: Hashable, CustomStringConvertible {
   var glyphTintArgb: Int64? = nil
   /// Raw PNG bytes for the `image` variant (`MKAnnotationView.image`).
   var imageBytes: FlutterStandardTypedData? = nil
+  /// Pixels per logical point in [imageBytes] (`UIImage(data:scale:)`).
+  var imagePixelRatio: Double? = nil
 
 
   // swift-format-ignore: AlwaysUseLowerCamelCase
@@ -548,6 +545,7 @@ struct PlatformAnnotationIcon: Hashable, CustomStringConvertible {
     let glyphSystemImage: String? = nilOrValue(pigeonVar_list[3])
     let glyphTintArgb: Int64? = nilOrValue(pigeonVar_list[4])
     let imageBytes: FlutterStandardTypedData? = nilOrValue(pigeonVar_list[5])
+    let imagePixelRatio: Double? = nilOrValue(pigeonVar_list[6])
 
     return PlatformAnnotationIcon(
       type: type,
@@ -555,7 +553,8 @@ struct PlatformAnnotationIcon: Hashable, CustomStringConvertible {
       glyphText: glyphText,
       glyphSystemImage: glyphSystemImage,
       glyphTintArgb: glyphTintArgb,
-      imageBytes: imageBytes
+      imageBytes: imageBytes,
+      imagePixelRatio: imagePixelRatio
     )
   }
   func toList() -> [Any?] {
@@ -566,13 +565,14 @@ struct PlatformAnnotationIcon: Hashable, CustomStringConvertible {
       glyphSystemImage,
       glyphTintArgb,
       imageBytes,
+      imagePixelRatio,
     ]
   }
   static func == (lhs: PlatformAnnotationIcon, rhs: PlatformAnnotationIcon) -> Bool {
     if Swift.type(of: lhs) != Swift.type(of: rhs) {
       return false
     }
-    return messagesPigeonInternal.deepEquals(lhs.type, rhs.type) && messagesPigeonInternal.deepEquals(lhs.markerTintArgb, rhs.markerTintArgb) && messagesPigeonInternal.deepEquals(lhs.glyphText, rhs.glyphText) && messagesPigeonInternal.deepEquals(lhs.glyphSystemImage, rhs.glyphSystemImage) && messagesPigeonInternal.deepEquals(lhs.glyphTintArgb, rhs.glyphTintArgb) && messagesPigeonInternal.deepEquals(lhs.imageBytes, rhs.imageBytes)
+    return messagesPigeonInternal.deepEquals(lhs.type, rhs.type) && messagesPigeonInternal.deepEquals(lhs.markerTintArgb, rhs.markerTintArgb) && messagesPigeonInternal.deepEquals(lhs.glyphText, rhs.glyphText) && messagesPigeonInternal.deepEquals(lhs.glyphSystemImage, rhs.glyphSystemImage) && messagesPigeonInternal.deepEquals(lhs.glyphTintArgb, rhs.glyphTintArgb) && messagesPigeonInternal.deepEquals(lhs.imageBytes, rhs.imageBytes) && messagesPigeonInternal.deepEquals(lhs.imagePixelRatio, rhs.imagePixelRatio)
   }
 
   func hash(into hasher: inout Hasher) {
@@ -583,10 +583,11 @@ struct PlatformAnnotationIcon: Hashable, CustomStringConvertible {
     messagesPigeonInternal.deepHash(value: glyphSystemImage, hasher: &hasher)
     messagesPigeonInternal.deepHash(value: glyphTintArgb, hasher: &hasher)
     messagesPigeonInternal.deepHash(value: imageBytes, hasher: &hasher)
+    messagesPigeonInternal.deepHash(value: imagePixelRatio, hasher: &hasher)
   }
 
   public var description: String {
-    return "PlatformAnnotationIcon(type: \(String(describing: type)), markerTintArgb: \(String(describing: markerTintArgb)), glyphText: \(String(describing: glyphText)), glyphSystemImage: \(String(describing: glyphSystemImage)), glyphTintArgb: \(String(describing: glyphTintArgb)), imageBytes: \(String(describing: imageBytes)))"
+    return "PlatformAnnotationIcon(type: \(String(describing: type)), markerTintArgb: \(String(describing: markerTintArgb)), glyphText: \(String(describing: glyphText)), glyphSystemImage: \(String(describing: glyphSystemImage)), glyphTintArgb: \(String(describing: glyphTintArgb)), imageBytes: \(String(describing: imageBytes)), imagePixelRatio: \(String(describing: imagePixelRatio)))"
   }
 }
 
@@ -1912,23 +1913,23 @@ class MapKitHostApiSetup {
 ///
 /// Generated protocol from Pigeon that represents Flutter messages that can be called from Swift.
 protocol MapKitFlutterApiProtocol {
-  func onCameraMoveStarted(completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onCameraMove(camera cameraArg: PlatformMapCamera, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onCameraIdle(completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onAnnotationTap(annotationId annotationIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onAnnotationDragStart(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onAnnotationDrag(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onAnnotationDragEnd(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onCalloutTap(annotationId annotationIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onPolylineTap(polylineId polylineIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onPolygonTap(polygonId polygonIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onCircleTap(circleId circleIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onMapTap(coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
-  func onMapLongPress(coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
+  func onCameraMoveStarted(completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onCameraMove(camera cameraArg: PlatformMapCamera, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onCameraIdle(completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onAnnotationTap(annotationId annotationIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onAnnotationDragStart(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onAnnotationDrag(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onAnnotationDragEnd(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onCalloutTap(annotationId annotationIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onPolylineTap(polylineId polylineIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onPolygonTap(polygonId polygonIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onCircleTap(circleId circleIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onMapTap(coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
+  func onMapLongPress(coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
   /// `MKMapViewDelegate.mapViewDidFailLoadingMap(_:withError:)`.
-  func onDidFailLoadingMap(error errorArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
+  func onDidFailLoadingMap(error errorArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
   /// `MKMapViewDelegate.mapView(_:didFailToLocateUserWithError:)`.
-  func onDidFailToLocateUser(error errorArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void)
+  func onDidFailToLocateUser(error errorArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void)
 }
 class MapKitFlutterApi: MapKitFlutterApiProtocol {
   private let binaryMessenger: FlutterBinaryMessenger
@@ -1940,7 +1941,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
   var codec: MessagesPigeonCodec {
     return MessagesPigeonCodec.shared
   }
-  func onCameraMoveStarted(completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onCameraMoveStarted(completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onCameraMoveStarted\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage(nil) { response in
@@ -1958,7 +1959,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onCameraMove(camera cameraArg: PlatformMapCamera, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onCameraMove(camera cameraArg: PlatformMapCamera, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onCameraMove\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([cameraArg] as [Any?]) { response in
@@ -1976,7 +1977,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onCameraIdle(completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onCameraIdle(completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onCameraIdle\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage(nil) { response in
@@ -1994,7 +1995,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onAnnotationTap(annotationId annotationIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onAnnotationTap(annotationId annotationIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onAnnotationTap\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([annotationIdArg] as [Any?]) { response in
@@ -2012,7 +2013,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onAnnotationDragStart(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onAnnotationDragStart(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onAnnotationDragStart\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([annotationIdArg, coordinateArg] as [Any?]) { response in
@@ -2030,7 +2031,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onAnnotationDrag(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onAnnotationDrag(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onAnnotationDrag\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([annotationIdArg, coordinateArg] as [Any?]) { response in
@@ -2048,7 +2049,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onAnnotationDragEnd(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onAnnotationDragEnd(annotationId annotationIdArg: String, coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onAnnotationDragEnd\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([annotationIdArg, coordinateArg] as [Any?]) { response in
@@ -2066,7 +2067,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onCalloutTap(annotationId annotationIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onCalloutTap(annotationId annotationIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onCalloutTap\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([annotationIdArg] as [Any?]) { response in
@@ -2084,7 +2085,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onPolylineTap(polylineId polylineIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onPolylineTap(polylineId polylineIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onPolylineTap\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([polylineIdArg] as [Any?]) { response in
@@ -2102,7 +2103,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onPolygonTap(polygonId polygonIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onPolygonTap(polygonId polygonIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onPolygonTap\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([polygonIdArg] as [Any?]) { response in
@@ -2120,7 +2121,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onCircleTap(circleId circleIdArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onCircleTap(circleId circleIdArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onCircleTap\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([circleIdArg] as [Any?]) { response in
@@ -2138,7 +2139,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onMapTap(coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onMapTap(coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onMapTap\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([coordinateArg] as [Any?]) { response in
@@ -2156,7 +2157,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
       }
     }
   }
-  func onMapLongPress(coordinate coordinateArg: PlatformCoordinate, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onMapLongPress(coordinate coordinateArg: PlatformCoordinate, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onMapLongPress\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([coordinateArg] as [Any?]) { response in
@@ -2175,7 +2176,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
     }
   }
   /// `MKMapViewDelegate.mapViewDidFailLoadingMap(_:withError:)`.
-  func onDidFailLoadingMap(error errorArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onDidFailLoadingMap(error errorArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onDidFailLoadingMap\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([errorArg] as [Any?]) { response in
@@ -2194,7 +2195,7 @@ class MapKitFlutterApi: MapKitFlutterApiProtocol {
     }
   }
   /// `MKMapViewDelegate.mapView(_:didFailToLocateUserWithError:)`.
-  func onDidFailToLocateUser(error errorArg: String, completion: @escaping (Result<Void, MapKitHostError>) -> Void) {
+  func onDidFailToLocateUser(error errorArg: String, completion: @escaping @Sendable (Result<Void, MapKitHostError>) -> Void) {
     let channelName: String = "dev.flutter.pigeon.mapkit_flutter.MapKitFlutterApi.onDidFailToLocateUser\(messageChannelSuffix)"
     let channel = FlutterBasicMessageChannel(name: channelName, binaryMessenger: binaryMessenger, codec: codec)
     channel.sendMessage([errorArg] as [Any?]) { response in
diff --git a/lib/src/messages.g.dart b/lib/src/messages.g.dart
index b6fbc99..b109d75 100644
--- a/lib/src/messages.g.dart
+++ b/lib/src/messages.g.dart
@@ -1,4 +1,4 @@
-// Autogenerated from Pigeon (v27.1.0), do not edit directly.
+// Autogenerated from Pigeon (v27.3.0), do not edit directly.
 // See also: https://pub.dev/packages/pigeon
 // ignore_for_file: unused_import, unused_shown_name
 // ignore_for_file: type=lint
@@ -457,6 +457,7 @@ class PlatformAnnotationIcon {
     this.glyphSystemImage,
     this.glyphTintArgb,
     this.imageBytes,
+    this.imagePixelRatio,
   });
 
   PlatformAnnotationIconType type;
@@ -476,6 +477,9 @@ class PlatformAnnotationIcon {
   /// Raw PNG bytes for the `image` variant (`MKAnnotationView.image`).
   Uint8List? imageBytes;
 
+  /// Pixels per logical point in [imageBytes] (`UIImage(data:scale:)`).
+  double? imagePixelRatio;
+
   List<Object?> _toList() {
     return <Object?>[
       type,
@@ -484,6 +488,7 @@ class PlatformAnnotationIcon {
       glyphSystemImage,
       glyphTintArgb,
       imageBytes,
+      imagePixelRatio,
     ];
   }
 
@@ -500,6 +505,7 @@ class PlatformAnnotationIcon {
       glyphSystemImage: result[3] as String?,
       glyphTintArgb: result[4] as int?,
       imageBytes: result[5] as Uint8List?,
+      imagePixelRatio: result[6] as double?,
     );
   }
 
@@ -517,7 +523,8 @@ class PlatformAnnotationIcon {
         _deepEquals(glyphText, other.glyphText) &&
         _deepEquals(glyphSystemImage, other.glyphSystemImage) &&
         _deepEquals(glyphTintArgb, other.glyphTintArgb) &&
-        _deepEquals(imageBytes, other.imageBytes);
+        _deepEquals(imageBytes, other.imageBytes) &&
+        _deepEquals(imagePixelRatio, other.imagePixelRatio);
   }
 
   @override
@@ -526,7 +533,7 @@ class PlatformAnnotationIcon {
 
   @override
   String toString() {
-    return 'PlatformAnnotationIcon(type: $type, markerTintArgb: $markerTintArgb, glyphText: $glyphText, glyphSystemImage: $glyphSystemImage, glyphTintArgb: $glyphTintArgb, imageBytes: $imageBytes)';
+    return 'PlatformAnnotationIcon(type: $type, markerTintArgb: $markerTintArgb, glyphText: $glyphText, glyphSystemImage: $glyphSystemImage, glyphTintArgb: $glyphTintArgb, imageBytes: $imageBytes, imagePixelRatio: $imagePixelRatio)';
   }
 }
 
diff --git a/lib/src/mk_annotation_icon.dart b/lib/src/mk_annotation_icon.dart
index 4f92283..d6c5608 100644
--- a/lib/src/mk_annotation_icon.dart
+++ b/lib/src/mk_annotation_icon.dart
@@ -27,18 +27,24 @@ final class MKAnnotationIcon {
        _glyphText = glyphText,
        _glyphSystemImage = systemImage,
        _glyphTintColor = glyphTintColor,
-       _imageBytes = null;
+       _imageBytes = null,
+       _imagePixelRatio = null;
 
   /// Raw PNG bytes as the annotation image (`MKAnnotationView.image`). Render
   /// any Flutter widget to a PNG (e.g. via `RenderRepaintBoundary.toImage`)
   /// and pass it here for a fully custom marker.
-  const MKAnnotationIcon.image(Uint8List png)
+  ///
+  /// [imagePixelRatio] is the pixels-per-logical-point of [png] (pass the
+  /// `pixelRatio` the widget was rendered with); defaults to the device pixel
+  /// ratio, matching bytes rendered at native resolution.
+  const MKAnnotationIcon.image(Uint8List png, {double? imagePixelRatio})
     : _type = .image,
       _markerTintColor = null,
       _glyphText = null,
       _glyphSystemImage = null,
       _glyphTintColor = null,
-      _imageBytes = png;
+      _imageBytes = png,
+      _imagePixelRatio = imagePixelRatio;
 
   /// Load an annotation image from the asset bundle into an
   /// [MKAnnotationIcon.image].
@@ -57,7 +63,9 @@ final class MKAnnotationIcon {
     final provider = AssetImage(name, bundle: bundle, package: package);
     final key = await provider.obtainKey(config);
     final data = await (bundle ?? rootBundle).load(key.name);
-    return .image(data.buffer.asUint8List());
+    // key.scale is the resolved variant's scale (1x/2x/3x), which is the
+    // ratio of the bytes actually loaded — not necessarily the screen's.
+    return .image(data.buffer.asUint8List(), imagePixelRatio: key.scale);
   }
 
   final PlatformAnnotationIconType _type;
@@ -66,6 +74,7 @@ final class MKAnnotationIcon {
   final String? _glyphSystemImage;
   final Color? _glyphTintColor;
   final Uint8List? _imageBytes;
+  final double? _imagePixelRatio;
 
   @internal
   /// Creates a new Platform object.
@@ -78,6 +87,10 @@ final class MKAnnotationIcon {
     glyphSystemImage: _glyphSystemImage,
     glyphTintArgb: _glyphTintColor?.toARGB32(),
     imageBytes: _imageBytes,
+    imagePixelRatio: _imageBytes == null
+        ? null
+        : _imagePixelRatio ??
+              PlatformDispatcher.instance.implicitView?.devicePixelRatio,
   );
 
   @override
@@ -88,7 +101,8 @@ final class MKAnnotationIcon {
       other._glyphText == _glyphText &&
       other._glyphSystemImage == _glyphSystemImage &&
       other._glyphTintColor == _glyphTintColor &&
-      listEquals(other._imageBytes, _imageBytes);
+      listEquals(other._imageBytes, _imageBytes) &&
+      other._imagePixelRatio == _imagePixelRatio;
 
   @override
   int get hashCode => Object.hash(
@@ -98,6 +112,7 @@ final class MKAnnotationIcon {
     _glyphSystemImage,
     _glyphTintColor,
     _imageBytes == null ? null : Object.hashAll(_imageBytes),
+    _imagePixelRatio,
   );
 
   @override
@@ -108,6 +123,7 @@ final class MKAnnotationIcon {
     if (_glyphSystemImage case final s?) b.write(', systemImage: $s');
     if (_glyphTintColor case final c?) b.write(', glyphTintColor: $c');
     if (_imageBytes case final bytes?) b.write(', image: ${bytes.length}B');
+    if (_imagePixelRatio case final r?) b.write(', imagePixelRatio: $r');
     return (b..write(')')).toString();
   }
 }
diff --git a/pigeons/messages.dart b/pigeons/messages.dart
index 6fe7ed9..8621952 100644
--- a/pigeons/messages.dart
+++ b/pigeons/messages.dart
@@ -2,10 +2,20 @@
 //
 // Regenerate after editing:
 //   dart run pigeon --input pigeons/messages.dart && dart format lib/src/messages.g.dart
+// then in the regenerated messages.g.swift:
+//   1. Re-apply the O(N) dictionary branch of `deepEquals` (direct
+//      `rhsDictionary[lhsKey]` lookup) — stock pigeon emits an O(N*M) scan
+//      and regenerating silently reverts the 0.3.4 perf fix.
+//   2. Mark the MapKitFlutterApi completions `@Sendable` — Xcode 26+ rejects
+//      capturing a plain completion in the channel reply closure:
+//      perl -pi -e 's/completion: \@escaping \(Result<Void, MapKitHostError>\) -> Void/completion: \@escaping \@Sendable (Result<Void, MapKitHostError>) -> Void/g' \
+//        ios/mapkit_flutter/Sources/mapkit_flutter/messages.g.swift
+//   3. Copy it over `darwin/mapkit_flutter/Sources/mapkit_flutter/` — the
+//      darwin tree builds from its own checked-in copy, not pigeon's output.
 //
 // Generated files (`lib/src/messages.g.dart`,
-// `ios/mapkit_flutter/Sources/mapkit_flutter/messages.g.swift`) are checked in
-// and must not be hand-edited.
+// `ios/mapkit_flutter/Sources/mapkit_flutter/messages.g.swift`, and the
+// darwin copy above) are checked in; hand-edit only per the steps above.
 //
 // Naming: every type here carries a `Platform` prefix — including enums that
 // the public API re-exports via `typedef` (e.g. `MKUserTrackingMode =
@@ -181,6 +191,7 @@ class PlatformAnnotationIcon {
     this.glyphSystemImage,
     this.glyphTintArgb,
     this.imageBytes,
+    this.imagePixelRatio,
   });
 
   final PlatformAnnotationIconType type;
@@ -199,6 +210,9 @@ class PlatformAnnotationIcon {
 
   /// Raw PNG bytes for the `image` variant (`MKAnnotationView.image`).
   final Uint8List? imageBytes;
+
+  /// Pixels per logical point in [imageBytes] (`UIImage(data:scale:)`).
+  final double? imagePixelRatio;
 }
 
 class PlatformAnnotation {
diff --git a/test/mk_annotation_icon_test.dart b/test/mk_annotation_icon_test.dart
index 689f706..59c9b77 100644
--- a/test/mk_annotation_icon_test.dart
+++ b/test/mk_annotation_icon_test.dart
@@ -1,5 +1,5 @@
 import 'dart:typed_data';
-import 'dart:ui' show Color;
+import 'dart:ui' show Color, PlatformDispatcher;
 
 import 'package:checks/checks.dart';
 import 'package:flutter_test/flutter_test.dart';
@@ -16,6 +16,7 @@ void main() {
       check(platform.glyphSystemImage).isNull();
       check(platform.glyphTintArgb).isNull();
       check(platform.imageBytes).isNull();
+      check(platform.imagePixelRatio).isNull();
     });
 
     test('serializes MKMarkerAnnotationView styling as ARGB32', () {
@@ -42,6 +43,24 @@ void main() {
       check(platform.imageBytes!).deepEquals(png);
       check(platform.markerTintArgb).isNull();
     });
+
+    test('serializes explicit imagePixelRatio', () {
+      final platform = MKAnnotationIcon.image(
+        Uint8List.fromList([1]),
+        imagePixelRatio: 2.5,
+      ).toPlatform();
+      check(platform.imagePixelRatio).equals(2.5);
+    });
+
+    test('imagePixelRatio defaults to the implicit view ratio', () {
+      TestWidgetsFlutterBinding.ensureInitialized();
+      final platform = MKAnnotationIcon.image(
+        Uint8List.fromList([1]),
+      ).toPlatform();
+      check(
+        platform.imagePixelRatio,
+      ).equals(PlatformDispatcher.instance.implicitView!.devicePixelRatio);
+    });
   });
 
   group('equality', () {
@@ -62,6 +81,14 @@ void main() {
       check(a == c).isFalse();
     });
 
+    test('images with different pixel ratios never compare equal', () {
+      final bytes = Uint8List.fromList([1, 2]);
+      final a = MKAnnotationIcon.image(bytes, imagePixelRatio: 2);
+      final b = MKAnnotationIcon.image(bytes, imagePixelRatio: 3);
+      check(a == b).isFalse();
+      check(a).equals(MKAnnotationIcon.image(bytes, imagePixelRatio: 2));
+    });
+
     test('marker and image never compare equal', () {
       check(
         const MKAnnotationIcon.marker() == MKAnnotationIcon.image(Uint8List(0)),