diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index d4575d8..1599701 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -12,16 +12,16 @@ jobs:
 
     # This job runs in a special container designed for building Flatpaks for AppCenter
     container:
-      image: ghcr.io/elementary/flatpak-platform/runtime:6
+      image: ghcr.io/elementary/flatpak-platform/runtime:8
       options: --privileged
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so the job can access it
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
       # Builds your flatpak manifest using the Flatpak Builder action
-    - uses: bilelmoussaoui/flatpak-github-actions/flatpak-builder@v3
+    - uses: bilelmoussaoui/flatpak-github-actions/flatpak-builder@v6.3
       with:
         # This is the name of the Bundle file we're building and can be anything you like
         bundle: Tuner.flatpak
diff --git a/data/meson.build b/data/meson.build
index 2f962e3..1ce764f 100644
--- a/data/meson.build
+++ b/data/meson.build
@@ -16,7 +16,7 @@ endforeach
 i18n.merge_file (
     input: meson.project_name () + '.desktop.in',
     output: meson.project_name () + '.desktop',
-    po_dir: join_paths (meson.source_root (), 'po', 'extra'),
+    po_dir: join_paths (meson.project_source_root(), 'po', 'extra'),
     type: 'desktop',
     install: true,
     install_dir: join_paths (get_option ('datadir'), 'applications')
@@ -26,7 +26,7 @@ i18n.merge_file (
 i18n.merge_file (
     input: meson.project_name () + '.appdata.xml.in',
     output: meson.project_name () + '.appdata.xml',
-    po_dir: join_paths (meson.source_root (), 'po', 'extra'),
+    po_dir: join_paths (meson.project_source_root(), 'po', 'extra'),
     install: true,
     install_dir: join_paths (get_option ('datadir'), 'metainfo')
 )
diff --git a/meson.build b/meson.build
index 5977853..7c3fd73 100644
--- a/meson.build
+++ b/meson.build
@@ -24,6 +24,7 @@ add_project_arguments (
 config_data = configuration_data()
 config_data.set_quoted('LOCALEDIR', join_paths(get_option('prefix'), get_option('localedir')))
 config_data.set_quoted('GETTEXT_PACKAGE', meson.project_name())
+config_data.set_quoted('VERSION', meson.project_version())
 config_file = configure_file(
     input: 'src/Config.vala.in',
     output: '@BASENAME@',
diff --git a/po/extra/meson.build b/po/extra/meson.build
index 526e40f..43f05c5 100644
--- a/po/extra/meson.build
+++ b/po/extra/meson.build
@@ -1,7 +1,7 @@
 # Install metadata translations
 i18n.gettext ('extra',
     args: [
-        '--directory=' + meson.source_root (),
+        '--directory=' + meson.project_source_root(),
         '--from-code=UTF-8'
     ],
     install: false
diff --git a/src/Application.vala b/src/Application.vala
index 22e59a0..ac7417e 100644
--- a/src/Application.vala
+++ b/src/Application.vala
@@ -12,7 +12,7 @@ public class Tuner.Application : Gtk.Application {
 
     public Window window;
 
-    public const string APP_VERSION = "1.5.3";
+    public const string APP_VERSION = VERSION;
     public const string APP_ID = "com.github.louis77.tuner";
     public const string STAR_CHAR = "★ ";
     public const string UNSTAR_CHAR = "☆ ";
diff --git a/src/Config.vala.in b/src/Config.vala.in
index af62dcf..30582b0 100644
--- a/src/Config.vala.in
+++ b/src/Config.vala.in
@@ -1,2 +1,3 @@
 public const string GETTEXT_PACKAGE = @GETTEXT_PACKAGE@;
 public const string LOCALEDIR = @LOCALEDIR@;
+public const string VERSION = @VERSION@;