diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 97fc064..2da991a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -5,9 +5,6 @@ on:
   pull_request: {}
   # allow rebuilding without a push
   workflow_dispatch: {}
-  # pre-build sstate regularly
-  schedule:
-    - cron: '30 2 * * *'
 
 jobs:
   build:
diff --git a/.github/workflows/schedule-builds.yml b/.github/workflows/schedule-builds.yml
new file mode 100644
index 0000000..4410958
--- /dev/null
+++ b/.github/workflows/schedule-builds.yml
@@ -0,0 +1,28 @@
+name: Schedule Builds
+
+on:
+  # allow rebuilding manually
+  workflow_dispatch:
+  # pre-build sstate regularly
+  schedule:
+    - cron: '30 2 * * *'
+
+jobs:
+  build:
+    name: Schedule Builds
+    runs-on: ubuntu-latest
+    if: ${{ github.event_name == 'workflow_dispatch' || vars.SCHEDULE_BUILDS }}
+    env:
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - name: Check out the repository
+        uses: actions/checkout@v4
+
+      - name: Trigger master build
+        run: gh workflow run build --ref master
+
+      - name: Trigger scarthgap build
+        run: gh workflow run build --ref scarthgap
+
+      - name: Trigger kirkstone build
+        run: gh workflow run build --ref kirkstone