diff --git a/.github/workflows/flatpak-repo.yml b/.github/workflows/flatpak-repo.yml
new file mode 100644
index 0000000..67e089b
--- /dev/null
+++ b/.github/workflows/flatpak-repo.yml
@@ -0,0 +1,41 @@
+name: Self-hosted flatpak repository
+
+on:
+  release:
+    types: [published]
+  workflow_dispatch:
+
+jobs:
+  flatter:
+    name: Build Flatpak
+    runs-on: ubuntu-latest
+    container:
+      image: ghcr.io/andyholmes/flatter/kde:6.10
+      options: --privileged
+    permissions:
+      contents: read
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Build
+        uses: andyholmes/flatter@main
+        with:
+          files: flatpak/io.github.vadi2.postured.yml
+          upload-pages-artifact: true
+          upload-bundles: true
+
+  deploy:
+    name: Deploy to GitHub Pages
+    runs-on: ubuntu-latest
+    needs: flatter
+    permissions:
+      pages: write
+      id-token: write
+    environment:
+      name: github-pages
+
+    steps:
+      - name: Deploy Pages
+        uses: actions/deploy-pages@v4
diff --git a/postured/tray.py b/postured/tray.py
index 629ddae..e77c292 100644
--- a/postured/tray.py
+++ b/postured/tray.py
@@ -168,8 +168,9 @@ def _rebuild_recalibrate_menu(self):
 
                 action = QAction(label, self.recalibrate_menu)
                 action.triggered.connect(
-                    lambda checked,
-                    mid=monitor_id: self.recalibrate_monitor_requested.emit(mid)
+                    lambda checked, mid=monitor_id: (
+                        self.recalibrate_monitor_requested.emit(mid)
+                    )
                 )
                 self.recalibrate_menu.addAction(action)