diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index c05181ea..db34eed9 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -7,11 +7,11 @@ pool:
   vmImage: 'Ubuntu-16.04'
 
 strategy:
-matrix:
-  node_8_x:
-    node_version: 8.x
-  node_10_x:
-    node_version: 10.x
+  matrix:
+    node_8_x:
+      node_version: 8.x
+    node_10_x:
+      node_version: 10.x
 
 steps:
 - task: NodeTool@0