diff --git a/ydb/library/yql/providers/generic/connector/api/common/data_source.proto b/ydb/library/yql/providers/generic/connector/api/common/data_source.proto
index ecfb64665c9e..d0f700280c09 100644
--- a/ydb/library/yql/providers/generic/connector/api/common/data_source.proto
+++ b/ydb/library/yql/providers/generic/connector/api/common/data_source.proto
@@ -32,6 +32,8 @@ enum EDataSourceKind {
     POSTGRESQL = 2;
     S3 = 3;
     YDB = 4;
+    MYSQL = 5;
+    MS_SQL_SERVER = 6;
 }
 
 // EProtocol generalizes various kinds of network protocols supported by different databases.