diff --git a/public/app/features/annotations/standardAnnotationSupport.ts b/public/app/features/annotations/standardAnnotationSupport.ts
index 8f4904abc7a..01d88a803f3 100644
--- a/public/app/features/annotations/standardAnnotationSupport.ts
+++ b/public/app/features/annotations/standardAnnotationSupport.ts
@@ -236,6 +236,7 @@ const legacyRunner = [
   'loki',
   'elasticsearch',
   'grafana-opensearch-datasource', // external
+  'grafana-splunk-datasource', // external
 ];
 
 /**