diff --git a/.vsts-ci.yml b/.vsts-ci.yml
index 0c6c9fc7af1d..d80af79ce22c 100644
--- a/.vsts-ci.yml
+++ b/.vsts-ci.yml
@@ -222,7 +222,7 @@ jobs:
     matrix:
       regular:
         TASK: regular
-        PYTHON_VERSION: '3.7'
+        PYTHON_VERSION: '3.9'
       sdist:
         TASK: sdist
         PYTHON_VERSION: '3.8'