diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 9116c70d4bd..267ad50bcc2 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -47,7 +47,10 @@ parameters:
   - buildConfig: Release
 
 extends:
-  template: v1/1ES.Official.PipelineTemplate.yml@1esPipelines
+  ${{ if ne(variables['Build.Reason'], 'PullRequest') }}:
+    template: v1/1ES.Official.PipelineTemplate.yml@1esPipelines
+  ${{ else }}:
+    template: v1/1ES.Unofficial.PipelineTemplate.yml@1esPipelines
   parameters:
     sdl:
       sourceAnalysisPool: