diff --git a/.azure-pipelines/jobs/test.yml b/.azure-pipelines/jobs/test.yml
index cadf99a51f7e52f56f6384593948f8ad65d548ad..68b6e5268e15d4d178c3642964c0823514c73f3b 100644
--- a/.azure-pipelines/jobs/test.yml
+++ b/.azure-pipelines/jobs/test.yml
@@ -35,7 +35,10 @@ jobs:
       Python37:
         python.version: '3.7'
         python.architecture: x64
-    maxParallel: 3
+      Python38:
+        python.version: '3.8'
+        python.architecture: x64
+    maxParallel: 4
 
   steps:
   - template: ../steps/run-tests.yml