diff --git a/package.json b/package.json
index 1d75f36..c428949 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@molgenis/vip-report-api",
-  "version": "3.4.0",
+  "version": "3.4.1",
   "description": "TypeScript Report API for Variant Call Format (VCF) Report Templates",
   "scripts": {
     "build": "tsc --build",
diff --git a/src/Api.d.ts b/src/Api.d.ts
index 0f36b87..82c1e28 100644
--- a/src/Api.d.ts
+++ b/src/Api.d.ts
@@ -37,8 +37,10 @@ export interface Params {
   size?: number;
 }
 
+export type SortPath = (string | number)[];
+
 export interface SortOrder {
-  property: string | string[];
+  property: string | SortPath;
   compare?: "asc" | "desc" | CompareFn;
 }