diff --git a/.github/utils/docs_search_sync.py b/.github/utils/docs_search_sync.py
new file mode 100644
index 00000000000..2f35b505b26
--- /dev/null
+++ b/.github/utils/docs_search_sync.py
@@ -0,0 +1,120 @@
+"""
+This script syncs the Haystack docs HTML files to the deepset workspace for search indexing.
+
+It is used in the docs_search_sync.yml workflow.
+
+1. Collects all HTML files from the docs and reference directories for the stable Haystack version.
+2. Uploads the HTML files to the deepset workspace.
+    - A timestamp-based metadata field is used to track document versions in the workspace.
+3. Deletes the old HTML files from the deepset workspace.
+    - Since most files are overwritten during upload, only a small number of deletions is expected.
+    - In case MAX_DELETIONS_SAFETY_LIMIT is exceeded, we block the deletion.
+"""
+
+import os
+import sys
+import time
+from pathlib import Path
+
+import requests
+from deepset_cloud_sdk.workflows.sync_client.files import DeepsetCloudFile, WriteMode, list_files, upload_texts
+
+DEEPSET_WORKSPACE_DOCS_SEARCH = os.environ["DEEPSET_WORKSPACE_DOCS_SEARCH"]
+DEEPSET_API_KEY_DOCS_SEARCH = os.environ["DEEPSET_API_KEY_DOCS_SEARCH"]
+
+# If there are more files to delete than this limit, it's likely that something went wrong in the upload process.
+MAX_DELETIONS_SAFETY_LIMIT = 20
+
+
+def collect_docs_files(version: int) -> list[DeepsetCloudFile]:
+    """
+    Collect all HTML files from the docs and reference directories.
+
+    Returns a list of DeepsetCloudFile objects.
+    """
+    repo_root = Path(__file__).parent.parent.parent
+    build_dir = repo_root / "docs-website" / "build"
+    # we want to exclude previous and temporarily unstable versions (2.x) and next version (next)
+    exclude = ("2.", "next")
+
+    files = []
+    for section in ("docs", "reference"):
+        for subfolder in (build_dir / section).iterdir():
+            if subfolder.is_dir() and not any(x in subfolder.name for x in exclude):
+                for html_file in subfolder.rglob("*.html"):
+                    files.append(
+                        DeepsetCloudFile(
+                            # The build produces files like docs/agents/index.html or reference/agents-api/index.html.
+                            # For file names, we want to use the parent directory name (agents.html or agents-api.html)
+                            name=f"{html_file.parent.name}.html",
+                            text=html_file.read_text(),
+                            meta={
+                                "type": "api-reference" if section == "reference" else "documentation",
+                                "version": version,
+                            },
+                        )
+                    )
+    return files
+
+
+def delete_files(file_names: list[str]) -> None:
+    """
+    Delete files from the deepset workspace.
+    """
+    url = f"https://api.cloud.deepset.ai/api/v1/workspaces/{DEEPSET_WORKSPACE_DOCS_SEARCH}/files"
+    payload = {"names": file_names}
+    headers = {"Accept": "application/json", "Authorization": f"Bearer {DEEPSET_API_KEY_DOCS_SEARCH}"}
+    response = requests.delete(url, json=payload, headers=headers, timeout=300)
+    response.raise_for_status()
+
+
+if __name__ == "__main__":
+    version = time.time_ns()
+    print(f"Docs version: {version}")
+
+    print("Collecting docs files from build directory")
+    dc_files = collect_docs_files(version)
+    print(f"Collected {len(dc_files)} docs files")
+
+    if len(dc_files) == 0:
+        print("No docs files found. Something is wrong. Exiting.")
+        sys.exit(1)
+
+    print("Uploading docs files to deepset")
+    summary = upload_texts(
+        workspace_name=DEEPSET_WORKSPACE_DOCS_SEARCH,
+        files=dc_files,
+        api_key=DEEPSET_API_KEY_DOCS_SEARCH,
+        blocking=True,  # Very important to ensure that DC is up to date when we query for deletion
+        timeout_s=300,
+        show_progress=True,
+        write_mode=WriteMode.OVERWRITE,
+        enable_parallel_processing=True,
+    )
+    print(f"Uploaded docs files to deepset\n{summary}")
+    if summary.failed_upload_count > 0:
+        print("Failed to upload some docs files. Stopping to prevent risky deletion of old files.")
+        sys.exit(1)
+
+    print("Listing old docs files from deepset")
+    odata_filter = f"version lt '{version}'"
+    old_files_names = [
+        f.name
+        for batch in list_files(
+            workspace_name=DEEPSET_WORKSPACE_DOCS_SEARCH, api_key=DEEPSET_API_KEY_DOCS_SEARCH, odata_filter=odata_filter
+        )
+        for f in batch
+    ]
+
+    print(f"Found {len(old_files_names)} old files to delete")
+    if len(old_files_names) > MAX_DELETIONS_SAFETY_LIMIT:
+        print(
+            f"Found >{MAX_DELETIONS_SAFETY_LIMIT} old files to delete. "
+            "Stopping because something could have gone wrong in the upload process."
+        )
+        sys.exit(1)
+
+    if len(old_files_names) > 0:
+        print("Deleting old docs files from deepset")
+        delete_files(old_files_names)
+        print("Deleted old docs files from deepset")
diff --git a/.github/workflows/docs_search_sync.yml b/.github/workflows/docs_search_sync.yml
new file mode 100644
index 00000000000..888a786230f
--- /dev/null
+++ b/.github/workflows/docs_search_sync.yml
@@ -0,0 +1,65 @@
+name: Docs Search Sync
+
+on:
+  workflow_dispatch: # Activate this workflow manually
+  schedule:
+    - cron: "0 1 * * *"
+
+# Running this workflow multiple times in parallel can cause issues with files uploads and deletions.
+concurrency:
+  group: docs-search-sync
+  cancel-in-progress: false
+
+jobs:
+  docs-search-sync:
+    runs-on: ubuntu-latest
+
+    steps:
+
+      - name: Checkout Haystack repo
+        uses: actions/checkout@v6
+
+      - name: Install Node.js
+        uses: actions/setup-node@v6
+        with:
+          node-version: "22"
+
+      - name: Install Python
+        uses: actions/setup-python@v6
+        with:
+          python-version: "3.12"
+
+      - name: Install Docusaurus and build docs-website
+        working-directory: docs-website
+        run: |
+          npm install
+          npm run build
+
+      - name: Install script dependencies
+        run: pip install deepset-cloud-sdk requests
+
+      - name: Update new docs to Search pipeline and remove outdated docs
+        env:
+          DEEPSET_WORKSPACE_DOCS_SEARCH: ${{ secrets.DEEPSET_WORKSPACE_DOCS_SEARCH }}
+          DEEPSET_API_KEY_DOCS_SEARCH: ${{ secrets.DEEPSET_API_KEY_DOCS_SEARCH }}
+        run: python ./.github/utils/docs_search_sync.py
+
+      - name: Send event to Datadog for nightly failures
+        if: failure() && github.event_name == 'schedule'
+        uses: masci/datadog@v1
+        with:
+          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          api-url: https://api.datadoghq.eu
+          events: |
+            - title: "${{ github.workflow }} workflow"
+              text: "Job ${{ github.job }} in branch ${{ github.ref_name }}"
+              alert_type: "error"
+              source_type_name: "Github"
+              host: ${{ github.repository_owner }}
+              tags:
+                - "project:${{ github.repository }}"
+                - "job:${{ github.job }}"
+                - "run_id:${{ github.run_id }}"
+                - "workflow:${{ github.workflow }}"
+                - "branch:${{ github.ref_name }}"
+                - "url:https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}"
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index b3a5f41ef67..1867e8da1a6 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -227,6 +227,7 @@ jobs:
             python:
               - '**/*.py'
               - '!test/**'
+              - '!.github/**'
             pyproject:
               - 'pyproject.toml'