diff --git a/protos/launcher_atom.proto b/protos/launcher_atom.proto
index 8af89d972b..404ef0fc0d 100644
--- a/protos/launcher_atom.proto
+++ b/protos/launcher_atom.proto
@@ -135,7 +135,7 @@ message TaskBarContainer {
   }
 }
 
-// Next value 54
+// Next value 55
 enum Attribute {
   option allow_alias = true;
 
@@ -197,6 +197,7 @@ enum Attribute {
   DATA_SOURCE_APPSEARCH_CATEGORY_SRP_PREVIEW = 48;
   DATA_SOURCE_APPSEARCH_ENTITY_SRP_PREVIEW = 49;
   DATA_SOURCE_AIAI_SEARCH_ROOT = 47;
+  DATA_SOURCE_LAUNCHER = 54;
 
   // Web suggestions provided by AGA
   ALL_APPS_SEARCH_RESULT_WEB_SUGGEST = 39;