diff --git a/build/azure-pipeline.stable.yml b/build/azure-pipeline.stable.yml
index 3c645ece..b0222b09 100644
--- a/build/azure-pipeline.stable.yml
+++ b/build/azure-pipeline.stable.yml
@@ -61,7 +61,7 @@ extends:
 
       - task: UsePythonVersion@0
         inputs:
-          versionSpec: '3.8'
+          versionSpec: '3.9'
           addToPath: true
           architecture: 'x64'
         displayName: Select Python version