diff --git a/packages/common/src/types/common.ts b/packages/common/src/types/common.ts
index 66e24bce..8d8ebb75 100644
--- a/packages/common/src/types/common.ts
+++ b/packages/common/src/types/common.ts
@@ -3,6 +3,8 @@ export type ErgoTree = string;
 export type Base58String = string;
 export type Amount = string | bigint;
 
+export type OneOrMore<T> = T | T[];
+
 export type SortingSelector<T> = (item: T) => string | number | bigint;
 export type SortingDirection = "asc" | "desc";