diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 6d67dfbb..72ff2b85 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -3,6 +3,8 @@ jobs:
   pool: {vmImage: 'Ubuntu-18.04'}
   steps:
     - task: UsePythonVersion@0
+      inputs:
+        versionSpec: '3.8'
     - bash: |
         python -m pip install -r requirements-dev.txt
         python ./bin/run_tests.py
@@ -11,6 +13,8 @@ jobs:
   pool: {vmImage: 'macOS-10.13'}
   steps:
     - task: UsePythonVersion@0
+      inputs:
+        versionSpec: '3.8'
     - bash: |
         python -m pip install -r requirements-dev.txt
         python ./bin/run_tests.py
@@ -19,6 +23,8 @@ jobs:
   pool: {vmImage: 'vs2017-win2016'}
   steps:
     - task: UsePythonVersion@0
+      inputs:
+        versionSpec: '3.8'
     - script: choco install vcpython27 -f -y
       displayName: Install Visual C++ for Python 2.7
     - bash: |