diff --git a/lib/main.dart b/lib/main.dart
index 251d685..6a08e8e 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -80,7 +80,7 @@ void main() async {
   setWindowMaxSize(const Size(692, 580));
   final foundQuickGet = await Process.run('which', ['quickget']);
   if (foundQuickGet.exitCode == 0) {
-    gOperatingSystems = await loadOperatingSystems(false);
+    gOperatingSystems = loadOperatingSystems(false);
     getIcons();
     AppVersion.packageInfo = await PackageInfo.fromPlatform();
   }
diff --git a/lib/src/model/operating_system.dart b/lib/src/model/operating_system.dart
index a3c913d..f870138 100644
--- a/lib/src/model/operating_system.dart
+++ b/lib/src/model/operating_system.dart
@@ -8,4 +8,4 @@ class OperatingSystem {
   List<Version> versions;
 }
 
-var gOperatingSystems = <OperatingSystem>[];
+Future<List<OperatingSystem>>? gOperatingSystems;
diff --git a/lib/src/pages/operating_system_selection.dart b/lib/src/pages/operating_system_selection.dart
index 622fc2c..2645a87 100644
--- a/lib/src/pages/operating_system_selection.dart
+++ b/lib/src/pages/operating_system_selection.dart
@@ -25,9 +25,6 @@ class _OperatingSystemSelectionState extends State<OperatingSystemSelection> {
 
   @override
   Widget build(BuildContext context) {
-    var list = gOperatingSystems
-        .where((os) => os.name.toLowerCase().contains(term.toLowerCase()))
-        .toList();
     return Scaffold(
       appBar: AppBar(
         title: Text(context.t('Select operating system')),
@@ -69,36 +66,61 @@ class _OperatingSystemSelectionState extends State<OperatingSystemSelection> {
       body: SingleChildScrollView(
         child: Column(
           children: [
-            ListView.builder(
-              padding: const EdgeInsets.only(top: 4),
-              shrinkWrap: true,
-              itemCount: list.length,
-              itemBuilder: (context, index) {
-                var item = list[index];
-                Widget icon;
+            FutureBuilder(
+              future: gOperatingSystems,
+              builder: (BuildContext context, AsyncSnapshot<List> snapshot) {
+                if (snapshot.hasData) {
+                  List list = snapshot.data!
+                      .where((os) => os.name.toLowerCase().contains(term.toLowerCase()))
+                      .toList();
+                  return ListView.builder(
+                    padding: const EdgeInsets.only(top: 4),
+                    shrinkWrap: true,
+                    itemCount: list.length,
+                    itemBuilder: (context, index) {
+                      var item = list[index];
+                      Widget icon;
 
-                if (osIcons.containsKey(item.code)) {
-                  icon = SvgPicture.asset(
-                    osIcons[item.code]!,
-                    width: 32,
-                    height: 32,
+                      if (osIcons.containsKey(item.code)) {
+                        icon = SvgPicture.asset(
+                          osIcons[item.code]!,
+                          width: 32,
+                          height: 32,
+                        );
+                      } else {
+                        // Replace with generic icon
+                        icon = const Icon(Icons.computer, size: 32);
+                      }
+                      return Card(
+                        child: ListTile(
+                          title: Text(item.name),
+                          leading: icon,
+                          onTap: () {
+                            Navigator.of(context).pop(item);
+                          },
+                        ),
+                      );
+                    },
                   );
                 } else {
-                  // Replace with generic icon
-                  icon = const Icon(Icons.computer, size: 32);
+                  return Row(
+                    mainAxisAlignment: MainAxisAlignment.center,
+                    children: [
+                      Column(
+                        children: [
+                          const Padding(
+                              padding: EdgeInsets.all(16.0),
+                              child: CircularProgressIndicator()
+                          ),
+                          Text(context.t('Loading available downloads')),
+                        ],
+                      )
+                    ],
+                  );
                 }
-                return Card(
-                  child: ListTile(
-                    title: Text(item.name),
-                    leading: icon,
-                    onTap: () {
-                      Navigator.of(context).pop(item);
-                    },
-                  ),
-                );
-              },
+              }
             ),
-          ],
+          ]
         ),
       ),
     );
diff --git a/pubspec.yaml b/pubspec.yaml
index 96277fd..bacbd40 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -4,7 +4,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 version: 1.2.8-1
 
 environment:
-  sdk: ">=2.14.4 <3.0.0"
+  sdk: ">=2.15.0 <3.0.0"
 
 dependencies:
   flutter: