diff --git a/.github/workflows/_release.yml b/.github/workflows/_release.yml
index 78d1624..5e1c369 100644
--- a/.github/workflows/_release.yml
+++ b/.github/workflows/_release.yml
@@ -6,44 +6,200 @@
 # separate terms of service, privacy policy, and support
 # documentation.
 
-name: Upload Python Package
+name: Build and Publish Python Package
 
 on:
   release:
     types: [published]
   workflow_dispatch:
+    inputs:
+      working-directory:
+        required: true
+        type: string
+        default: 'libs/oci'
 
-permissions:
-  contents: read
+env:
+  PYTHON_VERSION: "3.11"
+  POETRY_VERSION: "1.7.1"
 
 jobs:
-  build-n-publish:
-    name: Build and publish Python 🐍 distribution 📦 to PyPI
+  build:
+    if: github.ref == 'refs/heads/main'
     runs-on: ubuntu-latest
-    defaults:
-      run:
-        working-directory: libs/oci  # Set default for all steps
-    environment:
-      name: pypi
-      url: https://pypi.org/p/langchain-oci
+
+    outputs:
+      pkg-name: ${{ steps.check-version.outputs.pkg-name }}
+      version: ${{ steps.check-version.outputs.version }}
+
     steps:
       - uses: actions/checkout@v4
+
+      - name: Set up Python + Poetry ${{ env.POETRY_VERSION }}
+        uses: "./.github/actions/poetry_setup"
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+          poetry-version: ${{ env.POETRY_VERSION }}
+          working-directory: ${{ inputs.working-directory }}
+          cache-key: release
+
+      - name: Build project for distribution
+        run: poetry build
+        working-directory: ${{ inputs.working-directory }}
+
+      - name: Upload build
+        uses: actions/upload-artifact@v4
+        with:
+          name: dist
+          path: ${{ inputs.working-directory }}/dist/
+
+      - name: Check Version
+        id: check-version
+        shell: bash
+        working-directory: ${{ inputs.working-directory }}
+        run: |
+          echo pkg-name="$(poetry version | cut -d ' ' -f 1)" >> $GITHUB_OUTPUT
+          echo version="$(poetry version --short)" >> $GITHUB_OUTPUT
+
+  test-pypi-publish:
+    needs: build
+    runs-on: ubuntu-latest
+    environment:
+      name: testpypi
+      url: https://test.pypi.org/project/${{ needs.build.outputs.pkg-name }}/
+    steps:
+      - name: Download build artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: ${{ inputs.working-directory }}/dist/
+
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.x"
-      - name: Build distribution 📦
+          python-version: '3.x'
+
+      - name: Publish distribution 📦 to TestPyPI
+        env:
+          TWINE_USERNAME: __token__
+          TWINE_PASSWORD: ${{ secrets.GH_LC_OCI_TESTPYPI_TOKEN }}
         run: |
-          pip install build
-          python -m build
-      - name: Validate
+          pip install twine
+          twine upload --repository-url https://test.pypi.org/legacy/ ${{ inputs.working-directory }}/dist/* -u $TWINE_USERNAME -p $TWINE_PASSWORD
+
+  pre-release-checks:
+    needs:
+      - build
+      - test-pypi-publish
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python + Poetry ${{ env.POETRY_VERSION }}
+        uses: "./.github/actions/poetry_setup"
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+          poetry-version: ${{ env.POETRY_VERSION }}
+          working-directory: ${{ inputs.working-directory }}
+
+      - name: Import published package
+        shell: bash
+        working-directory: ${{ inputs.working-directory }}
+        env:
+          PKG_NAME: ${{ needs.build.outputs.pkg-name }}
+          VERSION: ${{ needs.build.outputs.version }}
+        # Here we use:
+        # - The default regular PyPI index as the *primary* index, meaning 
+        #   that it takes priority (https://pypi.org/simple)
+        # - The test PyPI index as an extra index, so that any dependencies that
+        #   are not found on test PyPI can be resolved and installed anyway.
+        #   (https://test.pypi.org/simple). This will include the PKG_NAME==VERSION
+        #   package because VERSION will not have been uploaded to regular PyPI yet.
+        # - attempt install again after 5 seconds if it fails because there is
+        #   sometimes a delay in availability on test pypi
+        run: |
+          poetry run pip install \
+            --extra-index-url https://test.pypi.org/simple/ \
+            "$PKG_NAME==$VERSION" || \
+          ( \
+            sleep 5 && \
+            poetry run pip install \
+              --extra-index-url https://test.pypi.org/simple/ \
+              "$PKG_NAME==$VERSION" \
+          )
+
+          # Replace all dashes in the package name with underscores,
+          # since that's how Python imports packages with dashes in the name.
+          IMPORT_NAME="$(echo "$PKG_NAME" | sed s/-/_/g)"
+
+          poetry run python -c "import $IMPORT_NAME; print(dir($IMPORT_NAME))"
+
+      - name: Import test dependencies
+        run: poetry install --with test,test_integration
+        working-directory: ${{ inputs.working-directory }}
+
+      # Overwrite the local version of the package with the test PyPI version.
+      - name: Import published package (again)
+        working-directory: ${{ inputs.working-directory }}
+        shell: bash
+        env:
+          PKG_NAME: ${{ needs.build.outputs.pkg-name }}
+          VERSION: ${{ needs.build.outputs.version }}
+        run: |
+          poetry run pip install \
+            --extra-index-url https://test.pypi.org/simple/ \
+            "$PKG_NAME==$VERSION"
+
+      - name: Run unit tests
+        run: make tests
+        working-directory: ${{ inputs.working-directory }}
+
+      - name: Run integration tests
+        run: make integration_tests
+        working-directory: ${{ inputs.working-directory }}
+
+      - name: Get minimum versions
+        working-directory: ${{ inputs.working-directory }}
+        id: min-version
+        run: |
+          poetry run pip install packaging
+          min_versions="$(poetry run python $GITHUB_WORKSPACE/.github/scripts/get_min_versions.py pyproject.toml)"
+          echo "min-versions=$min_versions" >> "$GITHUB_OUTPUT"
+          echo "min-versions=$min_versions"
+
+      - name: Run unit tests with minimum dependency versions
+        if: ${{ steps.min-version.outputs.min-versions != '' }}
+        env:
+          MIN_VERSIONS: ${{ steps.min-version.outputs.min-versions }}
         run: |
-          pip install dist/*.whl
-          python -c "import langchain_oci;"
+          poetry run pip install $MIN_VERSIONS
+          make tests
+        working-directory: ${{ inputs.working-directory }}
+
+  publish:
+    needs:
+      - build
+      - test-pypi-publish
+      - pre-release-checks
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url: https://pypi.org/p/${{ needs.build.outputs.pkg-name }}
+    steps:
+      - name: Download build artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: ${{ inputs.working-directory }}/dist/
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.x'
+
       - name: Publish distribution 📦 to PyPI
         env:
           TWINE_USERNAME: __token__
           TWINE_PASSWORD: ${{ secrets.GH_LC_OCI_PYPI_TOKEN }}
         run: |
           pip install twine
-          twine upload dist/* -u $TWINE_USERNAME -p $TWINE_PASSWORD
\ No newline at end of file
+          twine upload ${{ inputs.working-directory }}/dist/* -u $TWINE_USERNAME -p $TWINE_PASSWORD