diff --git a/.github/workflows/nightly-artifacts.yml b/.github/workflows/nightly-artifacts.yml
index cfbcba0..3103a96 100644
--- a/.github/workflows/nightly-artifacts.yml
+++ b/.github/workflows/nightly-artifacts.yml
@@ -499,6 +499,16 @@ jobs:
     needs: build-flatpak
 
     steps:
+      - name: Install Flatpak tooling
+        run: |
+          sudo apt-get update -qq
+          sudo apt-get install -y --no-install-recommends flatpak
+
+      - name: Import Flatpak signing key
+        run: |
+          echo "${{ secrets.FLATPAK_GPG_PRIVATE_KEY }}" | gpg --batch --import
+          echo "FLATPAK_GPG_KEY_ID=$(gpg --list-secret-keys --with-colons | awk -F: '/^fpr/{print $10; exit}')" >> "$GITHUB_ENV"
+
       - name: Download OSTree repo artifact
         uses: actions/download-artifact@v4.1.3
         with:
@@ -518,7 +528,9 @@ jobs:
           git config user.name "github-actions[bot]"
           # Copy the new OSTree build into the repo
           rsync -a ../flatpak-ostree-repo/ ./
-          # Stage all changes (new/updated refs in OSTree)
+          # Regenerate summary with all branches
+          flatpak build-update-repo --gpg-sign="$FLATPAK_GPG_KEY_ID" .
+          # Stage all changes (new/updated refs, summary, objects in OSTree)
           git add -A
           if git diff --cached --quiet; then
             echo "No changes to commit"
diff --git a/.github/workflows/tagged-release.yml b/.github/workflows/tagged-release.yml
index 8675c5c..bf2d469 100644
--- a/.github/workflows/tagged-release.yml
+++ b/.github/workflows/tagged-release.yml
@@ -589,6 +589,16 @@ jobs:
     needs: build-flatpak
 
     steps:
+      - name: Install Flatpak tooling
+        run: |
+          sudo apt-get update -qq
+          sudo apt-get install -y --no-install-recommends flatpak
+
+      - name: Import Flatpak signing key
+        run: |
+          echo "${{ secrets.FLATPAK_GPG_PRIVATE_KEY }}" | gpg --batch --import
+          echo "FLATPAK_GPG_KEY_ID=$(gpg --list-secret-keys --with-colons | awk -F: '/^fpr/{print $10; exit}')" >> "$GITHUB_ENV"
+
       - name: Download OSTree repo artifact
         uses: actions/download-artifact@v4.1.3
         with:
@@ -607,6 +617,8 @@ jobs:
           git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
           git config user.name "github-actions[bot]"
           rsync -a ../flatpak-ostree-repo/ ./
+          # Regenerate summary with all branches (not just the one just built)
+          flatpak build-update-repo --gpg-sign="$FLATPAK_GPG_KEY_ID" .
           git add -A
           if git diff --cached --quiet; then
             echo "No changes to commit"