diff --git a/.github/workflows/on_external_dispatch.yml b/.github/workflows/on_external_dispatch.yml
index 3604ce34..46252f0d 100644
--- a/.github/workflows/on_external_dispatch.yml
+++ b/.github/workflows/on_external_dispatch.yml
@@ -10,9 +10,9 @@ on:
         type: string
         description: Force version (vX.Y.Z-((rc|post)N))
         required: false
-      publish_to_pypi:
+      publish_packages:
         type: boolean
-        description: Publish packages to PyPI?
+        description: Publish packages on S3 and PyPI?
         required: true
         default: false
 
@@ -26,3 +26,32 @@ jobs:
       git_ref: ${{ github.ref }}
       duckdb_git_ref: ${{ inputs.duckdb-sha }}
       force_version: ${{ inputs.force_version }}
+
+  upload_to_staging:
+    name: Upload Artifacts to staging
+    runs-on: ubuntu-latest
+    needs: [ externally_triggered_build ]
+    if: ${{ github.repository_owner == 'duckdb' && inputs.publish_packages }}
+    steps:
+      - name: Fetch artifacts
+        uses: actions/download-artifact@v4
+        with:
+          pattern: '{sdist,wheel}*'
+          path: artifacts/
+          merge-multiple: true
+
+      - name: Authenticate with AWS
+        uses: aws-actions/configure-aws-credentials@v4
+        with:
+          aws-region: 'us-east-2'
+          aws-access-key-id: ${{ secrets.S3_DUCKDB_STAGING_ID }}
+          aws-secret-access-key: ${{ secrets.S3_DUCKDB_STAGING_KEY }}
+
+      - name: Upload artifacts to S3 bucket
+        shell: bash
+        run: |
+          DUCKDB_SHA="${{ inputs.duckdb-sha }}"
+          aws s3 cp \
+            artifacts \
+            s3://duckdb-staging/${DUCKDB_SHA:0:7}/${{ github.repository }}/ \
+            --recursive
diff --git a/.github/workflows/pypi_packaging.yml b/.github/workflows/pypi_packaging.yml
index ef4f527a..84016645 100644
--- a/.github/workflows/pypi_packaging.yml
+++ b/.github/workflows/pypi_packaging.yml
@@ -114,8 +114,9 @@ jobs:
 
       - uses: actions/upload-artifact@v4
         with:
-          name: sdist-main
+          name: sdist
           path: dist/*.tar.gz
+          compression-level: 0
 
   build_wheels:
     name: 'Wheel: ${{ matrix.python }}-${{ matrix.platform.cibw_system }}_${{ matrix.platform.arch }}'
@@ -186,3 +187,4 @@ jobs:
         with:
           name: wheel-${{ matrix.python }}-${{ matrix.platform.cibw_system }}_${{ matrix.platform.arch }}
           path: wheelhouse/*.whl
+          compression-level: 0