diff --git a/.github/workflows/update-flatpak.yml b/.github/workflows/update-flatpak.yml
new file mode 100644
index 0000000..cd27b55
--- /dev/null
+++ b/.github/workflows/update-flatpak.yml
@@ -0,0 +1,38 @@
+name: Update flatpak manifest
+on:
+  push:
+    branches: [update-flatpak-manifest-pr]
+  release:
+    types: [published]
+
+jobs:
+  update-manifest:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Replace sha512sum
+        uses: mikefarah/yq@master
+        with:
+          cmd: yq eval -i '.modules.[0].sources.[0].url = "https://github.com/swsnr/turnon/archive/refs/tags/$GH_TAG.tar.gz"' flatpak/de.swsnr.turnon.yaml
+      - name: Replace sha512sum
+        uses: mikefarah/yq@master
+        with:
+          cmd: yq eval -i '.modules.[0].sources.[0].sha512 = "$GH_SHA512"' flatpak/de.swsnr.turnon.yaml
+      - run: echo GH_SHA512="$(curl https://github.com/swsnr/turnon/archive/refs/tags/v1.1.0.tar.gz | sha512sum | cut -d' ' -f1)" >> "$GITHUB_ENV"
+      - name: Substitute environment variables
+        uses: mikefarah/yq@master
+        with:
+          cmd: yq eval -i '(.. | select(tag == "!!str")) |= envsubst' flatpak/de.swsnr.turnon.yaml
+        env:
+          # GH_TAG: ${{ github.ref_name }}
+          GH_TAG: v1.1.0
+      - run: git diff
+      # - uses: peter-evans/create-pull-request@v7
+      #   with:
+      #     commit-message: "Update flatpak manifest for ${{ github.ref_name }}"
+      #     branch: update-flatpak-manifest
+      #     sign-commits: true
+      #     delete-branch: true
+      #     title: "Update flatpak manifest for ${{ github.ref_name }}"
+      #     body: "Automated update of flatpak manifest for release ${{ github.ref_name }}"
+      #     assignees: swsnr