diff --git a/azurepipeline.yml b/azurepipeline.yml
index 3b65ce8..b892931 100644
--- a/azurepipeline.yml
+++ b/azurepipeline.yml
@@ -9,8 +9,7 @@ pr:
 
 jobs:
 - job: Build
-  pool:
-    vmImage: ubuntu-20.04
+  pool: ubuntu-20.04
 
   variables:
     DIFF_COVER_CHECK_THRESHOLD: 80