diff --git a/types/yaml/index.d.ts b/types/yaml/index.d.ts
index 61de677b96..8ccd8397a5 100644
--- a/types/yaml/index.d.ts
+++ b/types/yaml/index.d.ts
@@ -316,6 +316,7 @@ export namespace cst {
     interface FlowChar {
         char: "{" | "}" | "[" | "]" | "," | "?" | ":";
         offset: number;
+        origOffset?: number;
     }
 
     interface FlowCollection extends Node {