diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3d1c97f4..9cfde647 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Fixes
 - Snap:
     - retrieving installed applications information for Ubuntu based distros
+- Flatpak:
+    - update check for version 1.5.X
 
 ### AppImage support
 - Search, install, uninstall, downgrade, launch and retrieve the applications history
diff --git a/bauh/gems/appimage/controller.py b/bauh/gems/appimage/controller.py
index 92b96651..465a09f1 100644
--- a/bauh/gems/appimage/controller.py
+++ b/bauh/gems/appimage/controller.py
@@ -353,8 +353,15 @@ class AppImageManager(SoftwareManager):
         self.dbs_updater.start()
 
     def list_updates(self, internet_available: bool) -> List[PackageUpdate]:
-        # TODO
-        pass
+        res = self.read_installed(disk_loader=None, internet_available=internet_available)
+
+        updates = []
+        if res.installed:
+            for app in res.installed:
+                if app.update:
+                    updates.append(PackageUpdate(pkg_id=app.name, pkg_type='appimage', version=app.latest_version))
+
+        return updates
 
     def list_warnings(self) -> List[str]:
         pass
diff --git a/bauh/gems/flatpak/controller.py b/bauh/gems/flatpak/controller.py
index 5352e82c..a431f4c3 100644
--- a/bauh/gems/flatpak/controller.py
+++ b/bauh/gems/flatpak/controller.py
@@ -100,7 +100,11 @@ class FlatpakManager(SoftwareManager):
             for app_json in installed:
                 model = self._map_to_model(app_json=app_json, installed=True,
                                            disk_loader=disk_loader, internet=internet_available)
-                model.update = app_json['ref'] in updates[0] if updates else None
+                if version >= '1.5.0':
+                    model.update = '{}/{}'.format(app_json['id'], app_json['branch']) in updates[0] if updates else None
+                else:
+                    model.update = app_json['ref'] in updates[0] if updates else None
+
                 models.append(model)
 
         return SearchResult(models, None, len(models))