diff --git a/.azure-pipelines/linux-CI-nightly.yml b/.azure-pipelines/linux-CI-nightly.yml
deleted file mode 100644
index 0135a2fd..00000000
--- a/.azure-pipelines/linux-CI-nightly.yml
+++ /dev/null
@@ -1,66 +0,0 @@
-# Python package
-# Create and test a Python package on multiple Python versions.
-# Add steps that analyze code, save the dist with the build record, publish to a PyPI-compatible index, and more:
-# https://docs.microsoft.com/azure/devops/pipelines/languages/python
-
-trigger:
-- master
-
-jobs:
-
-- job: 'Test'
-  pool:
-    vmImage: 'Ubuntu-16.04'
-  strategy:
-    matrix:
-      Python39-nightly:
-        python.version: '3.9'
-        ORT_PATH: -i https://test.pypi.org/simple/ ort-nightly
-        COREML_PATH: git+https://github.com/apple/coremltools@3.1
-      Python38-nightly:
-        python.version: '3.8'
-        ORT_PATH: -i https://test.pypi.org/simple/ ort-nightly
-        COREML_PATH: git+https://github.com/apple/coremltools@3.1
-      Python37-nightly:
-        python.version: '3.7'
-        ORT_PATH: -i https://test.pypi.org/simple/ ort-nightly
-        COREML_PATH: git+https://github.com/apple/coremltools@3.1
-    maxParallel: 3
-
-  steps:
-  - script: sudo install -d -m 0777 /home/vsts/.conda/envs
-    displayName: Fix Conda permissions
-
-  - task: CondaEnvironment@1
-    inputs:
-      createCustomEnvironment: true
-      environmentName: 'py$(python.version)'
-      packageSpecs: 'python=$(python.version)'
-
-  - script: |
-      python -m pip install --upgrade pip
-      conda config --set always_yes yes --set changeps1 no
-      conda install -c conda-forge protobuf
-      conda install -c conda-forge numpy
-      conda install -c conda-forge cmake
-      python -m pip install $(COREML_PATH)
-      python -m pip install $(ONNX_PATH)
-      python -m pip install hummingbird-ml --no-deps
-      python -m pip install -r requirements.txt
-      python -m pip install -r requirements-dev.txt
-      python -m pip install $(ORT_PATH)
-      python -m pip install pytest
-    displayName: 'Install dependencies'
-
-  - script: |
-      pip install -e .
-      python -c "import onnxconverter_common;print(onnxconverter_common.__version__)"
-      python -c "import onnxruntime;print(onnxruntime.__version__)"
-      pytest tests --ignore=tests/sparkml --doctest-modules --junitxml=junit/test-results.xml
-    displayName: 'pytest - onnxmltools'
-
-  - task: PublishTestResults@2
-    inputs:
-      testResultsFiles: '**/test-results.xml'
-      testRunTitle: 'Python $(python.version)'
-    condition: succeededOrFailed()
diff --git a/.azure-pipelines/win32-CI-nightly.yml b/.azure-pipelines/win32-CI-nightly.yml
deleted file mode 100644
index 3aad5d61..00000000
--- a/.azure-pipelines/win32-CI-nightly.yml
+++ /dev/null
@@ -1,64 +0,0 @@
-# Python package
-# Create and test a Python package on multiple Python versions.
-# Add steps that analyze code, save the dist with the build record, publish to a PyPI-compatible index, and more:
-# https://docs.microsoft.com/azure/devops/pipelines/languages/python
-
-trigger:
-- master
-
-jobs:
-
-- job: 'Test'
-  pool:
-    vmImage: 'windows-latest'
-  strategy:
-    matrix:
-      Python39-nightly:
-        python.version: '3.9'
-        ONNXRT_PATH: -i https://test.pypi.org/simple/ ort-nightly
-        COREML_PATH: git+https://github.com/apple/coremltools@3.1
-      Python38-nightly:
-        python.version: '3.8'
-        ONNXRT_PATH: -i https://test.pypi.org/simple/ ort-nightly
-        COREML_PATH: git+https://github.com/apple/coremltools@3.1
-      Python37-nightly:
-        python.version: '3.7'
-        ONNXRT_PATH: -i https://test.pypi.org/simple/ ort-nightly
-        COREML_PATH: git+https://github.com/apple/coremltools@3.1
-    maxParallel: 3
-
-  steps:
-  - task: UsePythonVersion@0
-    inputs:
-      versionSpec: '$(python.version)'
-      architecture: 'x64'
-
-  - powershell: Write-Host "##vso[task.prependpath]$env:CONDA\Scripts"
-    displayName: Add conda to PATH
-
-  - script: conda create --yes --quiet --name py$(python.version) -c conda-forge python=$(python.version) numpy protobuf
-    displayName: Create Anaconda environment
-
-  - script: |
-      call activate py$(python.version)
-      python -m pip install --upgrade pip numpy
-      pip install %COREML_PATH% %ONNX_PATH%
-      pip install humming-bird-ml --no-deps
-      pip install -r requirements.txt
-      pip install -r requirements-dev.txt
-      pip install %ONNXRT_PATH%
-    displayName: 'Install dependencies'
-
-  - script: |
-      call activate py$(python.version)
-      pip install -e .
-      python -c "import onnxconverter_common;print(onnxconverter_common.__version__)"
-      python -c "import onnxruntime;print(onnxruntime.__version__)"
-      python -m pytest tests  --ignore=tests/sparkml --doctest-modules --junitxml=junit/test-results.xml
-    displayName: 'pytest - onnxmltools'
-
-  - task: PublishTestResults@2
-    inputs:
-      testResultsFiles: '**/test-results.xml'
-      testRunTitle: 'Python $(python.version)'
-    condition: succeededOrFailed()
diff --git a/.github/workflows/black-ruff.yml b/.github/workflows/black-ruff.yml
index c48dc25f..09da3fc3 100644
--- a/.github/workflows/black-ruff.yml
+++ b/.github/workflows/black-ruff.yml
@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: psf/black@stable
+      - uses: psf/black@193ee766ca496871f93621d6b58d57a6564ff81b  # stable 23.7.0
         with:
           options: "--diff --check"
           src: "."
@@ -13,4 +13,4 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: chartboost/ruff-action@v1
+      - uses: chartboost/ruff-action@v1.0.0
diff --git a/onnxmltools/convert/xgboost/__init__.py b/onnxmltools/convert/xgboost/__init__.py
index 11db0855..017852fc 100644
--- a/onnxmltools/convert/xgboost/__init__.py
+++ b/onnxmltools/convert/xgboost/__init__.py
@@ -1,3 +1,4 @@
 # SPDX-License-Identifier: Apache-2.0
 
+from . import operator_converters, shape_calculators
 from .convert import convert