diff --git a/.azure-pipelines/linux-CI-nightly.yml b/.azure-pipelines/linux-CI-nightly.yml
deleted file mode 100644
index c232ae702..000000000
--- a/.azure-pipelines/linux-CI-nightly.yml
+++ /dev/null
@@ -1,127 +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-latest'
-  strategy:
-    matrix:
-      Py39-Onnx1102-SkLatest:
-        python.version: '3.9'
-        numpy.version: '>=1.18.3'
-        onnx.version: '==1.10.2'
-        onnxrt.version: '-i https://test.pypi.org/simple/ ort-nightly'
-        sklearn.version: '>=1.0'
-      Py39-Onnx190-SkLatest:
-        python.version: '3.9'
-        numpy.version: '>=1.18.3'
-        onnx.version: '==1.9.0'
-        onnxrt.version: '-i https://test.pypi.org/simple/ ort-nightly'
-        sklearn.version: '>=1.0'
-      Py39-Onnx181-SkLatest:
-        python.version: '3.9'
-        numpy.version: '>=1.18.3'
-        onnx.version: '==1.8.1'
-        onnxrt.version: '-i https://test.pypi.org/simple/ ort-nightly'
-        sklearn.version: '>=1.0'
-      Py38-Onnx170-Sk0242:
-        python.version: '3.8'
-        numpy.version: '>=1.18.3'
-        onnx.version: '==1.7.0'
-        onnxrt.version: '-i https://test.pypi.org/simple/ ort-nightly'
-        sklearn.version: '==0.24.2'
-      Py37-Onnx160-Sk0232:
-        python.version: '3.7'
-        numpy.version: '==1.18.1'
-        onnx.version: '==1.6.0'
-        onnxrt.version: '-i https://test.pypi.org/simple/ ort-nightly'
-        sklearn.version: '==0.23.2'
-    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: |
-      conda config --set always_yes yes --set changeps1 no
-      conda install -c conda-forge numpy$(numpy.version)
-      conda install protobuf
-      python -m pip install --upgrade pip
-    displayName: 'Install environment'
-
-  - script: |
-      conda install numpy$(numpy.version)
-      pip install openpyxl cerberus
-    displayName: 'install numpy'
-
-  - script: |
-      conda install scikit-learn$(sklearn.version)
-    displayName: 'install scikit-learn'
-
-  - script: |
-      pip install onnx$(onnx.version)
-    displayName: 'install onnx'
-
-  - script: |
-      pip install flatbuffers
-      pip install $(onnxrt.version)
-    displayName: 'install onnxruntime'
-
-  - script: |
-      pip install -r requirements.txt
-      git clone https://github.com/microsoft/onnxconverter-common
-      cd onnxconverter-common
-      pip install -e .
-      cd ..
-      pip install -r requirements-dev.txt
-      pip install pytest
-    displayName: 'install requirements'
-
-  - script: |
-      pip install -e .
-    displayName: 'install'
-
-  - script: |
-      echo "---------------"
-      pip show numpy
-      echo "---------------"
-      pip show onnx
-      echo "---------------"
-      pip show onnxruntime
-      echo "---------------"
-      pip show onnxconverter-common
-      echo "---------------"
-      pip show scikit-learn
-      echo "---------------"
-    displayName: 'version'
-
-  - script: |
-      pytest tests --durations=0 --basetemp=temp --doctest-modules --junitxml=junit/test-results.xml
-    displayName: 'pytest'
-
-  - script: |
-      python -m pip install openpyxl
-      python tests/benchmark.py
-    displayName: 'benchmark'
-
-  - task: PublishTestResults@2
-    inputs:
-      testResultsFiles: '**/test-results.xml'
-      testCoverageFiles: 'htmlcov/**'
-      testBenchmarkFiles: 'TESTDUMP/*.xlsx'
-      testRunTitle: 'Python $(python.version)'
-    condition: succeededOrFailed()
diff --git a/.azure-pipelines/linux-conda-CI.yml b/.azure-pipelines/linux-conda-CI.yml
index 19d36de2f..b702581cf 100644
--- a/.azure-pipelines/linux-conda-CI.yml
+++ b/.azure-pipelines/linux-conda-CI.yml
@@ -4,7 +4,7 @@
 # https://docs.microsoft.com/azure/devops/pipelines/languages/python
 
 trigger:
-- master
+- main
 
 jobs:
 
diff --git a/.azure-pipelines/win32-CI-nightly.yml b/.azure-pipelines/win32-CI-nightly.yml
deleted file mode 100644
index 3206260fc..000000000
--- a/.azure-pipelines/win32-CI-nightly.yml
+++ /dev/null
@@ -1,128 +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:
-      Py39-Onnx1102-nightlyRT-SkLatest:
-        python.version: '3.9'
-        onnx.version: 'onnx==1.10.2'
-        numpy.version: 'numpy>=1.18.1'
-        scipy.version: 'scipy'
-        onnxrt.version: '-i https://test.pypi.org/simple/ ort-nightly'
-        sklearn.version: '>=1.0'
-      Py39-Onnx190-nightlyRT-SkLatest:
-        python.version: '3.9'
-        onnx.version: 'onnx==1.9.1'
-        numpy.version: 'numpy>=1.18.1'
-        scipy.version: 'scipy'
-        onnxrt.version: '-i https://test.pypi.org/simple/ ort-nightly'
-        sklearn.version: '>=1.0'
-      Py39-Onnx180-nightlyRT-SkLatest:
-        python.version: '3.9'
-        onnx.version: 'onnx==1.8.1'
-        numpy.version: 'numpy>=1.18.1'
-        scipy.version: 'scipy'
-        onnxrt.version: '-i https://test.pypi.org/simple/ ort-nightly'
-        sklearn.version: '>=1.0'
-      Py38-Onnx170-nightlyRT-Sk0242:
-        python.version: '3.8'
-        onnx.version: 'onnx==1.7.0'
-        numpy.version: 'numpy>=1.18.1'
-        scipy.version: 'scipy'
-        onnxrt.version: '-i https://test.pypi.org/simple/ ort-nightly'
-        sklearn.version: '==0.24.2'
-      Py37-Onnx160-nightlyRT-Npy1180-Sk0232:
-        python.version: '3.7'
-        onnx.version: 'onnx==1.6.0'
-        numpy.version: 'numpy==1.18.1'
-        scipy.version: 'scipy'
-        onnxrt.version: '-i https://test.pypi.org/simple/ ort-nightly'
-        sklearn.version: '==0.23.2'
-    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) protobuf
-    displayName: Create Anaconda environment
-
-  - script: |
-      call activate py$(python.version)
-      python -m pip install --upgrade pip
-      conda install $(numpy.version) $(scipy.version)
-      pip install $(onnx.version)
-      pip install openpyxl cerberus
-    displayName: 'Install numpy, scipy, onnx'
-
-  - script: |
-      call activate py$(python.version)
-      pip install -r requirements.txt
-      git clone https://github.com/microsoft/onnxconverter-common
-      cd onnxconverter-common
-      pip install -e .
-      cd ..
-      pip install -r requirements-dev.txt
-      pip install pytest
-    displayName: 'install requirements'
-
-  - script: |
-      call activate py$(python.version)
-      pip install $(onnx.version)
-      pip install flatbuffers
-      pip install $(onnxrt.version)
-    displayName: 'install onnx, onnxruntime'
-
-  - script: |
-      call activate py$(python.version)
-      conda install scikit-learn$(sklearn.version)
-    displayName: 'install scikit-learn'
-
-  - script: |
-      call activate py$(python.version)
-      pip install -e .
-    displayName: 'install skl2onnx'
-
-  - script: |
-      call activate py$(python.version)
-      python -c "import numpy;print('numpy:',numpy.__version__)"
-      python -c "import scipy;print('scipy:',scipy.__version__)"
-      python -c "import sklearn;print('sklearn:',sklearn.__version__)"
-      python -c "import onnx;print('onnx:',onnx.__version__)"
-      python -c "import onnxconverter_common;print('onnxconverter-common:',onnxconverter_common.__version__)"
-      python -c "import onnxruntime;print('onnxruntime:',onnxruntime.__version__)"
-    displayName: 'version'
-
-  - script: |
-      call activate py$(python.version)
-      pytest tests --durations=0 --basetemp=temp --doctest-modules --junitxml=junit/test-results.xml
-    displayName: 'pytest'
-
-  - script: |
-      call activate py$(python.version)
-      python -m pip install openpyxl
-      python tests/benchmark.py
-    displayName: 'benchmark'
-
-  - task: PublishTestResults@2
-    inputs:
-      testResultsFiles: '**/test-results.xml'
-      testCoverageFiles: 'htmlcov/**'
-      testBenchmarkFiles: 'TESTDUMP/*.xlsx'
-      testRunTitle: 'Python $(python.version)'
-    condition: succeededOrFailed()
diff --git a/.azure-pipelines/win32-conda-CI.yml b/.azure-pipelines/win32-conda-CI.yml
index 4a774d749..009e24436 100644
--- a/.azure-pipelines/win32-conda-CI.yml
+++ b/.azure-pipelines/win32-conda-CI.yml
@@ -4,7 +4,7 @@
 # https://docs.microsoft.com/azure/devops/pipelines/languages/python
 
 trigger:
-- master
+- main
 
 jobs: