diff --git a/kiwixbuild/dependencies/flatpak.py b/kiwixbuild/dependencies/flatpak.py
index c17e71a..3e32a98 100644
--- a/kiwixbuild/dependencies/flatpak.py
+++ b/kiwixbuild/dependencies/flatpak.py
@@ -8,7 +8,6 @@ pj = os.path.join
 class org_kde(Dependency):
     neutral = False
     name = 'org.kde'
-    version = '5.11'
 
     Source = NoopSource
 
@@ -26,7 +25,7 @@ class org_kde(Dependency):
             command = command.format(
                 remote_name = 'flathub',
                 name = self.target.name,
-                version = self.target.version
+                version = self.target.version()
             )
             run_command(command, self.buildEnv.build_dir, context, buildEnv=self.buildEnv)
 
@@ -34,4 +33,3 @@ class org_kde(Dependency):
             self.command('setup_remote', self._setup_remote)
             self.command('install_sdk', self._install_sdk)
 
-     
diff --git a/kiwixbuild/flatpak_builder.py b/kiwixbuild/flatpak_builder.py
index bc0c727..86a8abb 100644
--- a/kiwixbuild/flatpak_builder.py
+++ b/kiwixbuild/flatpak_builder.py
@@ -7,6 +7,7 @@ from .platforms import PlatformInfo
 from .utils import remove_duplicates, run_command, StopBuild, Context
 from .dependencies import Dependency
 from .packages import PACKAGE_NAME_MAPPERS
+from .versions import base_deps_versions
 from ._global import (
     neutralEnv, option,
     add_target_step, get_target_step, target_steps,
@@ -24,11 +25,14 @@ from .dependencies.base import (
     SCRIPT_DIR)
 import json
 from shutil import copyfile
+from urllib.parse import urlparse
+from urllib.request import urlopen
+import json
 
 MANIFEST = {
     'app-id': 'org.kiwix.desktop',
     'runtime': 'org.kde.Platform',
-    'runtime-version': '5.11',
+    'runtime-version': base_deps_versions['org.kde'],
     'sdk': 'org.kde.Sdk',
     'command': 'kiwix-desktop',
     'rename-icon': 'kiwix-desktop',
@@ -57,7 +61,7 @@ MANIFEST = {
     ]
 }
 
-
+GET_REF_URL_API_TEMPLATE = 'https://api.github.com/repos{repo}/git/refs/tags/{ref}'
 
 class FlatpakBuilder:
     def __init__(self):
@@ -154,6 +158,18 @@ class FlatpakBuilder:
                         'url': source.git_remote,
                         'tag': source.git_ref
                     }
+                    try:
+                        parsed = urlparse(source.git_remote)
+                        if parsed.hostname == 'github.com':
+                            repo = parsed.path[:-4]
+                            api_url = GET_REF_URL_API_TEMPLATE.format(
+                                repo = repo,
+                                ref = source.git_ref)
+                            with urlopen(api_url) as r:
+                                ret = json.loads(r.read())
+                            src['commit'] = ret['object']['sha']
+                    except:
+                        pass
                     module_sources.append(src)
                 for p in getattr(source, 'patches', []):
                     patch = {
diff --git a/kiwixbuild/versions.py b/kiwixbuild/versions.py
index b34524d..5f5add1 100644
--- a/kiwixbuild/versions.py
+++ b/kiwixbuild/versions.py
@@ -1,12 +1,12 @@
 # This file reference all the versions of the depedencies we use in kiwix-build.
 
 main_project_versions = {
-    'kiwix-lib': '3.1.1',
-    'kiwix-tools': '0.8.0',
+    'kiwix-lib': '4.0.0',
+    'kiwix-tools': '0.9.0',
     'libzim': '4.0.4',
     'zim-tools': '1.0.0',
     'zimwriterfs': '1.2',
-    'kiwix-desktop': '2.0-beta2'
+    'kiwix-desktop': '2.0-beta3'
 }
 
 # This dictionnary specify what we need to build at each release process.
@@ -25,8 +25,8 @@ main_project_versions = {
 
 release_versions = {
     'libzim': None, # Depends of base deps (was 0)
-    'kiwix-lib': None, # Depends of libzim (was 0)
-    'kiwix-tools': None, # Depends of kiwix-lib and libzim (was 2)
+    'kiwix-lib': 0, # Depends of libzim (was 0)
+    'kiwix-tools': 0, # Depends of kiwix-lib and libzim (was 0)
     'zim-tools': None, # Depends of libzim (was 2)
     'zimwriterfs': None, # Depends of libzim (was 1)
     'kiwix-desktop': 0 # Depends of kiwix-lib and libzim
@@ -55,4 +55,5 @@ base_deps_versions = {
   'android-ndk' : 'r13b',
   'qt' : '5.10.1',
   'qtwebengine' : '5.10.1',
+  'org.kde' : '5.12',
 }