diff --git a/contracts/test-utils/CHANGELOG.json b/contracts/test-utils/CHANGELOG.json
index 65324ea5c2..45195e81db 100644
--- a/contracts/test-utils/CHANGELOG.json
+++ b/contracts/test-utils/CHANGELOG.json
@@ -77,6 +77,10 @@
             {
                 "note": "Increase the number of ganache accounts to 20",
                 "pr": 2109
+            },
+            {
+                "note": "Add `Numberish` type.",
+                "pr": 2131
             }
         ]
     },
diff --git a/contracts/test-utils/src/index.ts b/contracts/test-utils/src/index.ts
index e3dea662f0..1bbd1411de 100644
--- a/contracts/test-utils/src/index.ts
+++ b/contracts/test-utils/src/index.ts
@@ -41,6 +41,7 @@ export {
     FillEventArgs,
     MarketBuyOrders,
     MarketSellOrders,
+    Numberish,
     OrderStatus,
     Token,
     TokenBalances,
diff --git a/contracts/test-utils/src/types.ts b/contracts/test-utils/src/types.ts
index 0734312365..e66d0baea1 100644
--- a/contracts/test-utils/src/types.ts
+++ b/contracts/test-utils/src/types.ts
@@ -175,3 +175,5 @@ export interface FillEventArgs {
     makerFeePaid: BigNumber;
     takerFeePaid: BigNumber;
 }
+
+export type Numberish = BigNumber | string | number;