diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 86d847b3c7..ecfc82d577 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -10,6 +10,8 @@ jobs:
     matrix:
       swift55:
         containerImage: swift:5.5
+      swift56:
+        containerImage: swift:5.6
   container: $[ variables['containerImage'] ]
   steps:
     - script: swift test --parallel