diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 4dfb51296..d9b1c5e94 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -45,15 +45,15 @@ jobs:
         imageName: 'macos-10.14'
         python.version: '3.6'
       # Don't test on 3.7 for now to speed up builds
-      # Python37Linux:
-      #   imageName: 'ubuntu-16.04'
-      #   python.version: '3.7'
-      # Python37Windows:
-      #   imageName: 'vs2017-win2016'
-      #   python.version: '3.7'
-      # Python37Mac:
-      #   imageName: 'macos-10.14'
-      #   python.version: '3.7'
+      Python37Linux:
+        imageName: 'ubuntu-16.04'
+        python.version: '3.7'
+      Python37Windows:
+        imageName: 'vs2017-win2016'
+        python.version: '3.7'
+      Python37Mac:
+        imageName: 'macos-10.14'
+        python.version: '3.7'
       Python38Linux:
         imageName: 'ubuntu-16.04'
         python.version: '3.8'
@@ -63,6 +63,15 @@ jobs:
       Python38Mac:
         imageName: 'macos-10.14'
         python.version: '3.8'
+      Python39Linux:
+        imageName: 'ubuntu-16.04'
+        python.version: '3.9'
+      Python39Windows:
+        imageName: 'vs2017-win2016'
+        python.version: '3.9'
+      Python39Mac:
+        imageName: 'macos-10.14'
+        python.version: '3.9'
     maxParallel: 4
   pool:
     vmImage: $(imageName)