diff --git a/ios/Runner.xcodeproj/project.pbxproj b/ios/Runner.xcodeproj/project.pbxproj
index 7cd77d1..34a5920 100644
--- a/ios/Runner.xcodeproj/project.pbxproj
+++ b/ios/Runner.xcodeproj/project.pbxproj
@@ -288,7 +288,7 @@
 			attributes = {
 				BuildIndependentTargetsInParallel = YES;
 				LastSwiftUpdateCheck = 1140;
-				LastUpgradeCheck = 1510;
+				LastUpgradeCheck = 1620;
 				ORGANIZATIONNAME = "The Chromium Authors";
 				TargetAttributes = {
 					43AA89532444DA6500EDC39C = {
diff --git a/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme b/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
index 2669c41..b1a5a51 100644
--- a/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
+++ b/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1510"
+   LastUpgradeVersion = "1620"
    version = "1.7">
    <BuildAction
       parallelizeBuildables = "YES"
diff --git a/ios/Runner/AppDelegate.swift b/ios/Runner/AppDelegate.swift
index 7ed9938..3175aa9 100644
--- a/ios/Runner/AppDelegate.swift
+++ b/ios/Runner/AppDelegate.swift
@@ -146,16 +146,19 @@ func MissingArgumentError(message: String, details: Any?) -> FlutterError {
     }
     
     func listSites(result: @escaping FlutterResult) {
-        self.sites?.loadSites { (sites, err) -> () in
-            if (err != nil) {
-                return result(CallFailedError(message: "Failed to load site list", details: err!.localizedDescription))
-            }
+        Task {
+            self.sites?.loadSites { (sites, err) -> () in
+                if (err != nil) {
+                    return result(CallFailedError(message: "Failed to load site list", details: err!.localizedDescription))
+                }
 
-            let encoder = JSONEncoder()
-            let data = try! encoder.encode(sites)
-            let ret = String(data: data, encoding: .utf8)
-            result(ret)
+                let encoder = JSONEncoder()
+                let data = try! encoder.encode(sites)
+                let ret = String(data: data, encoding: .utf8)
+                result(ret)
+            }
         }
+
     }
     
     func deleteSite(call: FlutterMethodCall, result: @escaping FlutterResult) {
diff --git a/ios/Runner/Sites.swift b/ios/Runner/Sites.swift
index 2355772..8808164 100644
--- a/ios/Runner/Sites.swift
+++ b/ios/Runner/Sites.swift
@@ -19,10 +19,11 @@ class Sites {
         self.messenger = messenger
     }
 
-    func loadSites(completion: @escaping ([String: Site]?, (any Error)?) -> ()) {
+    func loadSites() async -> Result<[String: Site], (any Error)> {
+        var result: Result<[String: Site], (any Error)>?;
         _ = SiteList { (sites, err) in
             if (err != nil) {
-                return completion(nil, err)
+                result = Result.failure(err!)
             }
             
             sites?.values.forEach{ site in
@@ -38,8 +39,10 @@ class Sites {
             let justSites = self.containers.mapValues {
                 return $0.site
             }
-            completion(justSites, nil)
+            result = Result.success(justSites)
         }
+        
+        return result!;
     }
     
     func deleteSite(id: String, callback: @escaping ((any Error)?) -> ()) {