diff --git a/sdk/core/perf.yml b/sdk/core/perf.yml
index 6708e23dfa..cb2fc9cc3f 100644
--- a/sdk/core/perf.yml
+++ b/sdk/core/perf.yml
@@ -2,7 +2,7 @@ parameters:
 - name: PackageVersions
   displayName: PackageVersions (regex of package versions to run)
   type: string
-  default: 'source'
+  default: '1|source'
 - name: Tests
   displayName: Tests (regex of tests to run)
   type: string