diff --git a/flatpak/flatpak_meta.json b/flatpak/flatpak_meta.json
index 43736066..be92a836 100644
--- a/flatpak/flatpak_meta.json
+++ b/flatpak/flatpak_meta.json
@@ -4,16 +4,10 @@
     "githubReleaseOrganization": "wger-project",
     "githubReleaseProject": "flutter",
     "localReleases": [
-        {
-            "version": "1.5.3",
-            "date": "2023-03-16"
-        }
+
     ],
     "localReleaseAssets": [
-        {
-            "arch": "x86_64",
-            "tarballPath": "./scripts/flatpak_generator exports/wger-linux-x86_64.tar.gz"
-        }
+
     ],
     "localLinuxBuildDir": "../build/linux",
     "appDataPath": "de.wger.flutter.appdata.xml",
diff --git a/flatpak/scripts/flatpak_packager.dart b/flatpak/scripts/flatpak_packager.dart
index 9cb60a8a..5346a605 100644
--- a/flatpak/scripts/flatpak_packager.dart
+++ b/flatpak/scripts/flatpak_packager.dart
@@ -30,16 +30,16 @@ void main(List<String> arguments) async {
 
   final fetchFromGithub = arguments.contains('--github');
 
-  final outputDir = Directory('${Directory.current.path}/flatpak_generator exports');
+  final outputDir = Directory('${Directory.current.path}/flatpak_generator_exports');
   outputDir.createSync();
 
   final packageGenerator = PackageGenerator(inputDir: metaFile.parent, meta: meta);
 
-  if (PackageGenerator.runningOnARM()) {
-    await packageGenerator.generatePackage(outputDir, CPUArchitecture.aarch64, fetchFromGithub);
-  } else {
-    await packageGenerator.generatePackage(outputDir, CPUArchitecture.x86_64, fetchFromGithub);
-  }
+  packageGenerator.generatePackage(
+    outputDir,
+    PackageGenerator.runningOnARM() ? CPUArchitecture.aarch64 : CPUArchitecture.x86_64,
+    fetchFromGithub,
+  );
 }
 
 class PackageGenerator {
@@ -101,17 +101,20 @@ class PackageGenerator {
     final destDir = Directory('${tempDir.path}/bin');
     destDir.createSync();
 
-    final packagePath =
-        '${outputDir.absolute.path}/${meta.lowercaseAppName}-linux-${arch.flatpakArchCode}.tar.gz';
+    final baseFileName = '${meta.lowercaseAppName}-linux-${arch.flatpakArchCode}';
 
+    final packagePath = '${outputDir.absolute.path}/$baseFileName.tar.gz';
     Process.runSync('cp', ['-r', '${buildDir.absolute.path}/.', destDir.absolute.path]);
     Process.runSync('tar', ['-czvf', packagePath, '.'], workingDirectory: tempDir.absolute.path);
-
     print('Generated $packagePath');
 
     final preShasum = Process.runSync('shasum', ['-a', '256', packagePath]);
+    final sha256 = preShasum.stdout.toString().split(' ').first;
 
-    shaByArch.putIfAbsent(arch, () => preShasum.stdout.toString().split(' ').first);
+    final shaFile = await File('${outputDir.path}/$baseFileName.sha256').writeAsString(sha256);
+    print('Generated ${shaFile.path}');
+
+    shaByArch.putIfAbsent(arch, () => sha256);
 
     tempDir.deleteSync(recursive: true);
   }
diff --git a/flatpak/scripts/flatpak_shared.dart b/flatpak/scripts/flatpak_shared.dart
index a83e2c6a..4e16b65f 100644
--- a/flatpak/scripts/flatpak_shared.dart
+++ b/flatpak/scripts/flatpak_shared.dart
@@ -53,7 +53,7 @@ class GithubReleases {
   List<Release>? _releases;
   List<ReleaseAsset>? _latestReleaseAssets;
 
-  GithubReleases(this.githubReleaseOrganization, this.githubReleaseProject) {}
+  GithubReleases(this.githubReleaseOrganization, this.githubReleaseProject);
 
   Future<List<Release>> getReleases() async {
     if (_releases == null) {
@@ -84,7 +84,7 @@ class GithubReleases {
     await Future.forEach<dynamic>(decodedJson, (dynamic releaseDynamic) async {
       final releaseMap = releaseDynamic as Map;
 
-      final releaseDateAndTime = DateTime.parse((releaseMap['published_at'] as String));
+      final releaseDateAndTime = DateTime.parse(releaseMap['published_at'] as String);
       final releaseDateString = releaseDateAndTime.toIso8601String().split('T').first;
 
       if (latestReleaseAssetDate == null ||
@@ -167,16 +167,7 @@ class GithubReleases {
   }
 
   Future<String> _readSha(String shaUrl) async {
-    final urlSplitByScheme = shaUrl.split('://');
-    final urlWithoutScheme = urlSplitByScheme.last;
-    final firstSlashIndex = urlWithoutScheme.indexOf('/');
-    return (await http.get(Uri(
-            scheme: urlSplitByScheme.first,
-            host: urlWithoutScheme.substring(0, firstSlashIndex),
-            path: urlWithoutScheme.substring(firstSlashIndex))))
-        .body
-        .split(' ')
-        .first;
+    return (await http.get(Uri.parse(shaUrl))).body.split(' ').first;
   }
 }
 
@@ -246,7 +237,7 @@ class FlatpakMeta {
         throw Exception(
             'Metadata must include Github repository info if fetching releases from Github.');
       }
-      return await _githubReleases!.getLatestReleaseAssets();
+      return _githubReleases!.getLatestReleaseAssets();
     } else {
       if (_localReleases == null) {
         throw Exception('Metadata must include releases if not fetching releases from Github.');
diff --git a/flatpak/scripts/manifest_generator.dart b/flatpak/scripts/manifest_generator.dart
index 48c04961..da27f860 100644
--- a/flatpak/scripts/manifest_generator.dart
+++ b/flatpak/scripts/manifest_generator.dart
@@ -1,5 +1,6 @@
 import 'dart:convert';
 import 'dart:io';
+
 import 'flatpak_shared.dart';
 
 void main(List<String> arguments) async {
@@ -25,7 +26,7 @@ void main(List<String> arguments) async {
 
   final fetchFromGithub = arguments.contains('--github');
 
-  final outputDir = Directory('${Directory.current.path}/flatpak_generator exports');
+  final outputDir = Directory('${Directory.current.path}/flatpak_generator_exports');
   outputDir.createSync();
 
   final manifestGenerator = FlatpakManifestGenerator(meta);
@@ -37,7 +38,7 @@ void main(List<String> arguments) async {
 
   final flathubJsonContent = await manifestGenerator.generateFlathubJson(fetchFromGithub);
   if (flathubJsonContent != null) {
-    final flathubJsonPath = '${outputDir.path}/flathub.json}';
+    final flathubJsonPath = '${outputDir.path}/flathub.json';
     final flathubJsonFile = File(flathubJsonPath);
     flathubJsonFile.writeAsStringSync(flathubJsonContent);
     print('Generated $flathubJsonPath');