diff --git a/.pipelines/ci.yml b/.pipelines/ci.yml
index 50279887..6a82714e 100644
--- a/.pipelines/ci.yml
+++ b/.pipelines/ci.yml
@@ -445,59 +445,54 @@ stages:
 
     strategy:
       matrix:
+        py312-1201:
+          python.version: '3.12'
+          torch.version: 'torch torchvision torchaudio'
+          ort.version: '1.20.1'
         py312-1192:
           python.version: '3.12'
           torch.version: 'torch torchvision torchaudio'
           ort.version: '1.19.2'
-        py312-1181:
-          python.version: '3.12'
+        py311-1181:
+          python.version: '3.11'
           torch.version: 'torch torchvision torchaudio'
           ort.version: '1.18.1'
-        py311-1171:
-          python.version: '3.11'
+        py310-1171:
+          python.version: '3.10'
           torch.version: 'torch torchvision torchaudio'
           ort.version: '1.17.1'
         py310-1163:
           python.version: '3.10'
           torch.version: 'torch torchvision torchaudio'
           ort.version: '1.16.3'
-        py39-1151:
-          python.version: '3.9'
-          torch.version: 'torch==1.13.1 torchvision==0.14.1 torchaudio==0.13.1 --index-url https://download.pytorch.org/whl/cpu'
-          ort.version: '1.15.1'
 
     steps:
-    - powershell: Write-Host "##vso[task.prependpath]$env:CONDA\Scripts"
-      displayName: Add conda to PATH
-
-    - script: conda create --yes --quiet --name pyenv -c conda-forge python=$(python.version) numpy
-      displayName: Create Anaconda environment
+    - task: UsePythonVersion@0
+      inputs:
+        versionSpec: $(python.version)
+        disableDownloadFromRegistry: true
+        addToPath: true
+        architecture: 'x64'
+      displayName: Use ADO python task
 
     - script: |
-        call activate pyenv
         python -m pip install --upgrade pip
         python -m pip install onnxruntime==$(ort.version)
         python -m pip install -r requirements-dev.txt
       displayName: Install requirements{-dev}.txt and cmake python modules
-      condition: ne(variables['python.version'], '3.12')
 
     - script: |
-        call activate pyenv
         set CMAKE_ARGS=-DOCOS_ONNXRUNTIME_VERSION=$(ort.version)
-        python -m pip install .
+        python -m pip install -v .
       displayName: Build the wheel
 
     - script: |
-        call activate pyenv
         python -m pip install $(torch.version)
       displayName: Install pytorch
-      condition: ne(variables['python.version'], '3.12')
 
     - script: |
-        call activate pyenv
-        pytest test
+        cd test && python -m pytest .
       displayName: Run python test
-      condition: ne(variables['python.version'], '3.12')
 
   #################
   # Windows PyDebug
@@ -509,7 +504,7 @@ stages:
     steps:
     - task: UsePythonVersion@0
       inputs:
-        versionSpec: '3.x'
+        versionSpec: '3.12'
         disableDownloadFromRegistry: true
         addToPath: true
         architecture: 'x64'
@@ -518,10 +513,11 @@ stages:
     - script: |
         python -m pip install --upgrade setuptools pip
         python -m pip install "numpy < 2.0.0"
-        set OCOS_NO_OPENCV=1
-        set OCOS_SCB_DEBUG=1
         python -m pip install -v -e .
       displayName: Build onnxruntime-extensions in editable mode.
+      env:
+        OCOS_NO_OPENCV: 1
+        OCOS_SCB_DEBUG: 1
 
     - script: |
         python -m pip install -r requirements-dev.txt
diff --git a/.pipelines/ci_optional.yml b/.pipelines/ci_optional.yml
index 7d58dc73..2e8fb0ce 100644
--- a/.pipelines/ci_optional.yml
+++ b/.pipelines/ci_optional.yml
@@ -130,7 +130,7 @@ stages:
     steps:
     - task: UsePythonVersion@0
       inputs:
-        versionSpec: '3.x'
+        versionSpec: '3.12'
         disableDownloadFromRegistry: true
         addToPath: true
         architecture: 'x64'