diff --git a/tools/ci_build/github/azure-pipelines/publish-nuget.yml b/tools/ci_build/github/azure-pipelines/publish-nuget.yml
index 8ce7915da76d1..367977ff59192 100644
--- a/tools/ci_build/github/azure-pipelines/publish-nuget.yml
+++ b/tools/ci_build/github/azure-pipelines/publish-nuget.yml
@@ -29,6 +29,12 @@ stages:
 
     - checkout: self
       submodules: false
+
+    - task: UsePythonVersion@0
+      inputs:
+        versionSpec: '3.9'
+        addToPath: true
+
     - template: templates/set-version-number-variables-step.yml
 
     - script: mkdir "$(Build.BinariesDirectory)\nuget-artifact\final-package"