diff --git a/.azure/pipelines/build.yaml b/.azure/pipelines/build.yaml
index df25f02c649..6b1308f3fb9 100644
--- a/.azure/pipelines/build.yaml
+++ b/.azure/pipelines/build.yaml
@@ -2,6 +2,7 @@ trigger:
   branches:
     include:
     - main
+    - 3.x
   paths:
     exclude:
     - samples