diff --git a/packages/constants/src.ts/bignumbers.ts b/packages/constants/src.ts/bignumbers.ts
index 3e827626e..7175087fc 100644
--- a/packages/constants/src.ts/bignumbers.ts
+++ b/packages/constants/src.ts/bignumbers.ts
@@ -7,11 +7,16 @@ const Two: BigNumber = (/*#__PURE__*/BigNumber.from(2));
 const WeiPerEther: BigNumber = (/*#__PURE__*/BigNumber.from("1000000000000000000"));
 const MaxUint256: BigNumber = (/*#__PURE__*/BigNumber.from("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"));
 
+const MinInt256: BigNumber = (/*#__PURE__*/BigNumber.from("-0x8000000000000000000000000000000000000000000000000000000000000000"));
+const MaxInt256: BigNumber = (/*#__PURE__*/BigNumber.from("0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"));
+
 export {
     NegativeOne,
     Zero,
     One,
     Two,
     WeiPerEther,
-    MaxUint256
+    MaxUint256,
+    MinInt256,
+    MaxInt256,
 };
diff --git a/packages/constants/src.ts/index.ts b/packages/constants/src.ts/index.ts
index ba301df17..abc59a0a6 100644
--- a/packages/constants/src.ts/index.ts
+++ b/packages/constants/src.ts/index.ts
@@ -7,7 +7,9 @@ export {
     One,
     Two,
     WeiPerEther,
-    MaxUint256
+    MaxUint256,
+    MinInt256,
+    MaxInt256
 } from "./bignumbers";
 export { HashZero } from "./hashes";
 export { EtherSymbol } from "./strings";