diff --git a/packages/types/src/parser-options.ts b/packages/types/src/parser-options.ts
index bb5101768e0..968f1b3a001 100644
--- a/packages/types/src/parser-options.ts
+++ b/packages/types/src/parser-options.ts
@@ -58,6 +58,7 @@ interface ParserOptions {
   tsconfigRootDir?: string;
   warnOnUnsupportedTypeScriptVersion?: boolean;
   moduleResolver?: string;
+  [additionalProperties: string]: unknown;
 }
 
 export { DebugLevel, EcmaVersion, ParserOptions, SourceType };