diff --git a/examples/GTDOrder.ts b/examples/GTDOrder.ts
index 3c7cf12..eaf2d37 100644
--- a/examples/GTDOrder.ts
+++ b/examples/GTDOrder.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/approveAllowances.ts b/examples/approveAllowances.ts
index f990b56..928c851 100644
--- a/examples/approveAllowances.ts
+++ b/examples/approveAllowances.ts
@@ -15,7 +15,7 @@ export function getWallet(mainnetQ: boolean): ethers.Wallet {
     if (mainnetQ) {
         rpcUrl = `https://polygon-mainnet.g.alchemy.com/v2/${rpcToken}`;
     } else {
-        rpcUrl = `https://polygon-mumbai.g.alchemy.com/v2/${rpcToken}`;
+        rpcUrl = `https://polygon-amoy.g.alchemy.com/v2/${rpcToken}`;
     }
     const provider = new ethers.providers.JsonRpcProvider(rpcUrl);
     let wallet = new ethers.Wallet(pk);
@@ -24,24 +24,24 @@ export function getWallet(mainnetQ: boolean): ethers.Wallet {
 }
 
 export function getUsdcContract(mainnetQ: boolean, wallet: ethers.Wallet): ethers.Contract {
-    const chainId = mainnetQ ? 137 : 80001;
+    const chainId = mainnetQ ? 137 : 80002;
     const contractConfig = getContractConfig(chainId);
     return new ethers.Contract(contractConfig.collateral, usdcAbi, wallet);
 }
 
 export function getCtfContract(mainnetQ: boolean, wallet: ethers.Wallet): ethers.Contract {
-    const chainId = mainnetQ ? 137 : 80001;
+    const chainId = mainnetQ ? 137 : 80002;
     const contractConfig = getContractConfig(chainId);
     return new ethers.Contract(contractConfig.conditionalTokens, ctfAbi, wallet);
 }
 
 async function main() {
     // --------------------------
-    // SET MAINNET OR MUMBAI HERE
+    // SET MAINNET OR AMOY HERE
     const isMainnet = false;
     // --------------------------
     const wallet = getWallet(isMainnet);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const contractConfig = getContractConfig(chainId);
diff --git a/examples/approveNegRiskAllowances.ts b/examples/approveNegRiskAllowances.ts
index 12d5cb6..1751669 100644
--- a/examples/approveNegRiskAllowances.ts
+++ b/examples/approveNegRiskAllowances.ts
@@ -20,7 +20,7 @@ export function getWallet(mainnetQ: boolean): ethers.Wallet {
     if (mainnetQ) {
         rpcUrl = `https://polygon-mainnet.g.alchemy.com/v2/${rpcToken}`;
     } else {
-        rpcUrl = `https://polygon-mumbai.g.alchemy.com/v2/${rpcToken}`;
+        rpcUrl = `https://polygon-amoy.g.alchemy.com/v2/${rpcToken}`;
     }
     const provider = new ethers.providers.JsonRpcProvider(rpcUrl);
     let wallet = new ethers.Wallet(pk);
@@ -29,24 +29,24 @@ export function getWallet(mainnetQ: boolean): ethers.Wallet {
 }
 
 export function getUsdcContract(mainnetQ: boolean, wallet: ethers.Wallet): ethers.Contract {
-    const chainId = mainnetQ ? 137 : 80001;
+    const chainId = mainnetQ ? 137 : 80002;
     const contractConfig = getContractConfig(chainId);
     return new ethers.Contract(contractConfig.collateral, usdcAbi, wallet);
 }
 
 export function getCtfContract(mainnetQ: boolean, wallet: ethers.Wallet): ethers.Contract {
-    const chainId = mainnetQ ? 137 : 80001;
+    const chainId = mainnetQ ? 137 : 80002;
     const contractConfig = getContractConfig(chainId);
     return new ethers.Contract(contractConfig.conditionalTokens, ctfAbi, wallet);
 }
 
 async function main() {
     // --------------------------
-    // SET MAINNET OR MUMBAI HERE
+    // SET MAINNET OR AMOY HERE
     const isMainnet = false;
     // --------------------------
     const wallet = getWallet(isMainnet);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const contractConfig = getContractConfig(chainId);
diff --git a/examples/areOrdersScoring.ts b/examples/areOrdersScoring.ts
index ae2c12d..14dc86b 100644
--- a/examples/areOrdersScoring.ts
+++ b/examples/areOrdersScoring.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/cancelAll.ts b/examples/cancelAll.ts
index e82f41f..328500e 100644
--- a/examples/cancelAll.ts
+++ b/examples/cancelAll.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/cancelMarketOrders.ts b/examples/cancelMarketOrders.ts
index d276a92..b8e837b 100644
--- a/examples/cancelMarketOrders.ts
+++ b/examples/cancelMarketOrders.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/cancelOrder.ts b/examples/cancelOrder.ts
index 516416f..d0c10fe 100644
--- a/examples/cancelOrder.ts
+++ b/examples/cancelOrder.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/cancelOrders.ts b/examples/cancelOrders.ts
index 09b8be4..c6b0164 100644
--- a/examples/cancelOrders.ts
+++ b/examples/cancelOrders.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/createApiKey.ts b/examples/createApiKey.ts
index a757347..802f8c4 100644
--- a/examples/createApiKey.ts
+++ b/examples/createApiKey.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/createOrDeriveApiKey.ts b/examples/createOrDeriveApiKey.ts
index 44b941b..8526f85 100644
--- a/examples/createOrDeriveApiKey.ts
+++ b/examples/createOrDeriveApiKey.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/deleteApiKey.ts b/examples/deleteApiKey.ts
index 6759fd7..4df5829 100644
--- a/examples/deleteApiKey.ts
+++ b/examples/deleteApiKey.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/deriveApiKey.ts b/examples/deriveApiKey.ts
index 9248af6..d936c08 100644
--- a/examples/deriveApiKey.ts
+++ b/examples/deriveApiKey.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/dropNofications.ts b/examples/dropNofications.ts
index 0952cc9..2073ad9 100644
--- a/examples/dropNofications.ts
+++ b/examples/dropNofications.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/geoToken.ts b/examples/geoToken.ts
index 59f067f..0bdbeea 100644
--- a/examples/geoToken.ts
+++ b/examples/geoToken.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     const geoBlockToken = process.env.GEO_BLOCK_TOKEN; // the geo block token
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
diff --git a/examples/getApiKeys.ts b/examples/getApiKeys.ts
index efaef76..0616383 100644
--- a/examples/getApiKeys.ts
+++ b/examples/getApiKeys.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/getBalanceAllowance.ts b/examples/getBalanceAllowance.ts
index 8f0567b..a30db1b 100644
--- a/examples/getBalanceAllowance.ts
+++ b/examples/getBalanceAllowance.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/getLargeOrders.ts b/examples/getLargeOrders.ts
index 7e4ed62..ed90c25 100644
--- a/examples/getLargeOrders.ts
+++ b/examples/getLargeOrders.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/getLastTradePrice.ts b/examples/getLastTradePrice.ts
index 6367f8c..5a89e57 100644
--- a/examples/getLastTradePrice.ts
+++ b/examples/getLastTradePrice.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/getLastTradesPrices.ts b/examples/getLastTradesPrices.ts
index 0460b18..599db17 100644
--- a/examples/getLastTradesPrices.ts
+++ b/examples/getLastTradesPrices.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/getMarketTradesEvents.ts b/examples/getMarketTradesEvents.ts
index faae852..a036ade 100644
--- a/examples/getMarketTradesEvents.ts
+++ b/examples/getMarketTradesEvents.ts
@@ -6,7 +6,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     const clobClient = new ClobClient(host, chainId);
 
     console.log("events", await clobClient.getMarketTradesEvents("condition_id"));
diff --git a/examples/getMarkets.ts b/examples/getMarkets.ts
index e56d66a..417492b 100644
--- a/examples/getMarkets.ts
+++ b/examples/getMarkets.ts
@@ -6,7 +6,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     const clobClient = new ClobClient(host, chainId);
 
     console.log("market", await clobClient.getMarket("condition_id"));
diff --git a/examples/getMidPoint.ts b/examples/getMidPoint.ts
index d01e1dd..4b47177 100644
--- a/examples/getMidPoint.ts
+++ b/examples/getMidPoint.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/getMidPoints.ts b/examples/getMidPoints.ts
index f223594..4e0e261 100644
--- a/examples/getMidPoints.ts
+++ b/examples/getMidPoints.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/getNofications.ts b/examples/getNofications.ts
index 3caa816..6a375f9 100644
--- a/examples/getNofications.ts
+++ b/examples/getNofications.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/getOpenOrders.ts b/examples/getOpenOrders.ts
index 747d0fb..75a6084 100644
--- a/examples/getOpenOrders.ts
+++ b/examples/getOpenOrders.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/getOrder.ts b/examples/getOrder.ts
index 7edbb1a..ddde053 100644
--- a/examples/getOrder.ts
+++ b/examples/getOrder.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/getOrderbook.ts b/examples/getOrderbook.ts
index edda979..e1ca95a 100644
--- a/examples/getOrderbook.ts
+++ b/examples/getOrderbook.ts
@@ -6,7 +6,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     const clobClient = new ClobClient(host, chainId);
     const YES = "1343197538147866997676250008839231694243646439454152539053893078719042421992";
 
diff --git a/examples/getOrderbooks.ts b/examples/getOrderbooks.ts
index 4edce65..10ee3f5 100644
--- a/examples/getOrderbooks.ts
+++ b/examples/getOrderbooks.ts
@@ -6,7 +6,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     const clobClient = new ClobClient(host, chainId);
 
     const YES = "1343197538147866997676250008839231694243646439454152539053893078719042421992";
diff --git a/examples/getPrice.ts b/examples/getPrice.ts
index 950d913..e97e7c0 100644
--- a/examples/getPrice.ts
+++ b/examples/getPrice.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/getPrices.ts b/examples/getPrices.ts
index 558407d..015e1a3 100644
--- a/examples/getPrices.ts
+++ b/examples/getPrices.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/getPricesHistory.ts b/examples/getPricesHistory.ts
index 29b1a8b..a74ee5c 100644
--- a/examples/getPricesHistory.ts
+++ b/examples/getPricesHistory.ts
@@ -13,7 +13,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/getServerTime.ts b/examples/getServerTime.ts
index bca4554..01c9249 100644
--- a/examples/getServerTime.ts
+++ b/examples/getServerTime.ts
@@ -6,7 +6,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     const clobClient = new ClobClient(host, chainId);
 
     console.log(`Server time: ${await clobClient.getServerTime()}`);
diff --git a/examples/getTrades.ts b/examples/getTrades.ts
index 658565e..dd78afd 100644
--- a/examples/getTrades.ts
+++ b/examples/getTrades.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/isOrderScoring.ts b/examples/isOrderScoring.ts
index acda9c6..7eb2b54 100644
--- a/examples/isOrderScoring.ts
+++ b/examples/isOrderScoring.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/marketOrder.ts b/examples/marketOrder.ts
index b7eccfa..56094fa 100644
--- a/examples/marketOrder.ts
+++ b/examples/marketOrder.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/matchOrders.ts b/examples/matchOrders.ts
index 7cc13b1..5a73634 100644
--- a/examples/matchOrders.ts
+++ b/examples/matchOrders.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/order.ts b/examples/order.ts
index 4be41ef..4f96247 100644
--- a/examples/order.ts
+++ b/examples/order.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/populateOrderbook.ts b/examples/populateOrderbook.ts
index b143ec8..ef64635 100644
--- a/examples/populateOrderbook.ts
+++ b/examples/populateOrderbook.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/rewards.ts b/examples/rewards.ts
index af2d4ac..29c45aa 100644
--- a/examples/rewards.ts
+++ b/examples/rewards.ts
@@ -7,7 +7,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/signatureTypes.ts b/examples/signatureTypes.ts
index 488de09..0c07fe3 100644
--- a/examples/signatureTypes.ts
+++ b/examples/signatureTypes.ts
@@ -8,7 +8,7 @@ dotenvConfig({ path: resolve(__dirname, "../.env") });
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/testPolyProxyMarketBuy.ts b/examples/testPolyProxyMarketBuy.ts
index f84794c..ce15df0 100644
--- a/examples/testPolyProxyMarketBuy.ts
+++ b/examples/testPolyProxyMarketBuy.ts
@@ -31,7 +31,7 @@ async function populateBook(client: ClobClient) {
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/examples/testPolyProxyMarketSell.ts b/examples/testPolyProxyMarketSell.ts
index a37e2f8..1ecf30d 100644
--- a/examples/testPolyProxyMarketSell.ts
+++ b/examples/testPolyProxyMarketSell.ts
@@ -31,7 +31,7 @@ async function populateBook(client: ClobClient) {
 
 async function main() {
     const wallet = new ethers.Wallet(`${process.env.PK}`);
-    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.MUMBAI}`) as Chain;
+    const chainId = parseInt(`${process.env.CHAIN_ID || Chain.AMOY}`) as Chain;
     console.log(`Address: ${await wallet.getAddress()}, chainId: ${chainId}`);
 
     const host = process.env.CLOB_API_URL || "http://localhost:8080";
diff --git a/package.json b/package.json
index 113d05b..78f1c09 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@polymarket/clob-client",
     "description": "Typescript client for Polymarket's CLOB",
-    "version": "4.4.2",
+    "version": "4.5.0",
     "contributors": [
         {
             "name": "Jonathan Amenechi",
@@ -41,7 +41,7 @@
         "test": "make test"
     },
     "dependencies": {
-        "@polymarket/order-utils": "^2.0.0",
+        "@polymarket/order-utils": "^2.1.0",
         "axios": "^0.27.2",
         "browser-or-node": "^2.1.1",
         "ethers": "^5.7.1"
diff --git a/src/config.ts b/src/config.ts
index 6e1edfc..85834f6 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -6,12 +6,12 @@ type ContractConfig = {
     conditionalTokens: string;
 };
 
-const MUMBAI_CONTRACTS: ContractConfig = {
-    exchange: "0x4bFb41d5B3570DeFd03C39a9A4D8dE6Bd8B8982E",
-    negRiskAdapter: "0x9A6930BB811fe3dFE1c35e4502134B38EC54399C",
-    negRiskExchange: "0x87d1A0DdB4C63a6301916F02090A51a7241571e4",
-    collateral: "0x2E8DCfE708D44ae2e406a1c02DFE2Fa13012f961",
-    conditionalTokens: "0x7D8610E9567d2a6C9FBf66a5A13E9Ba8bb120d43",
+const AMOY_CONTRACTS: ContractConfig = {
+    exchange: "0xdFE02Eb6733538f8Ea35D585af8DE5958AD99E40",
+    negRiskAdapter: "0xd91E80cF2E7be2e162c6513ceD06f1dD0dA35296",
+    negRiskExchange: "0xC5d563A36AE78145C45a50134d48A1215220f80a",
+    collateral: "0x9c4e1703476e875070ee25b56a58b008cfb8fa78",
+    conditionalTokens: "0x69308FB512518e39F9b16112fA8d994F4e2Bf8bB",
 };
 
 const MATIC_CONTRACTS: ContractConfig = {
@@ -29,8 +29,8 @@ const getContractConfig = (chainID: number): ContractConfig => {
     switch (chainID) {
         case 137:
             return MATIC_CONTRACTS;
-        case 80001:
-            return MUMBAI_CONTRACTS;
+        case 80002:
+            return AMOY_CONTRACTS;
         default:
             throw new Error("Invalid network");
     }
diff --git a/src/types.ts b/src/types.ts
index aab5b3a..4f7c63d 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -254,7 +254,7 @@ export interface Trade {
 
 export enum Chain {
     POLYGON = 137,
-    MUMBAI = 80001,
+    AMOY = 80002,
 }
 
 export interface MarketPrice {
diff --git a/tests/headers/index.test.ts b/tests/headers/index.test.ts
index aa2b5b6..ce6fbfa 100644
--- a/tests/headers/index.test.ts
+++ b/tests/headers/index.test.ts
@@ -5,7 +5,7 @@ import { Wallet } from "ethers";
 import { ApiKeyCreds, Chain } from "../../src/types";
 
 describe("headers", () => {
-    const chainId = Chain.MUMBAI;
+    const chainId = Chain.AMOY;
     let wallet: Wallet;
     let creds: ApiKeyCreds;
     beforeEach(() => {
diff --git a/tests/order-builder/helpers.test.ts b/tests/order-builder/helpers.test.ts
index 6062229..ce0be73 100644
--- a/tests/order-builder/helpers.test.ts
+++ b/tests/order-builder/helpers.test.ts
@@ -17,7 +17,7 @@ import { decimalPlaces, roundDown, roundNormal } from "../../src/utilities";
 import { ContractConfig, getContractConfig } from "../../src/config";
 
 describe("helpers", () => {
-    const chainId = Chain.MUMBAI;
+    const chainId = Chain.AMOY;
     let wallet: Wallet;
     let contractConfig: ContractConfig;
     beforeEach(() => {
@@ -1788,7 +1788,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.EOA,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -1825,7 +1825,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.EOA,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -1862,7 +1862,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.EOA,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -1899,7 +1899,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.EOA,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -1937,7 +1937,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.POLY_GNOSIS_SAFE,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -1971,7 +1971,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.POLY_GNOSIS_SAFE,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -2005,7 +2005,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.POLY_GNOSIS_SAFE,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -2039,7 +2039,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.POLY_GNOSIS_SAFE,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -2078,7 +2078,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.EOA,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -2115,7 +2115,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.EOA,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -2152,7 +2152,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.EOA,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -2189,7 +2189,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.EOA,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -2227,7 +2227,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.POLY_GNOSIS_SAFE,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -2261,7 +2261,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.POLY_GNOSIS_SAFE,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -2295,7 +2295,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.POLY_GNOSIS_SAFE,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -2329,7 +2329,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.POLY_GNOSIS_SAFE,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -3355,7 +3355,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createMarketBuyOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.EOA,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -3391,7 +3391,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createMarketBuyOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.EOA,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -3427,7 +3427,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createMarketBuyOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.EOA,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -3463,7 +3463,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createMarketBuyOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.EOA,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -3503,7 +3503,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createMarketBuyOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.EOA,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -3539,7 +3539,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createMarketBuyOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.EOA,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -3575,7 +3575,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createMarketBuyOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.EOA,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
@@ -3611,7 +3611,7 @@ describe("helpers", () => {
 
                     const signedOrder = await createMarketBuyOrder(
                         wallet,
-                        Chain.MUMBAI,
+                        Chain.AMOY,
                         SignatureType.EOA,
                         "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
                         order,
diff --git a/tests/signing/eip712.test.ts b/tests/signing/eip712.test.ts
index 92f9aac..ee99a4a 100644
--- a/tests/signing/eip712.test.ts
+++ b/tests/signing/eip712.test.ts
@@ -13,13 +13,13 @@ describe("eip712", () => {
     });
 
     it("buildClobEip712Signature", async () => {
-        const signature = await buildClobEip712Signature(wallet, Chain.MUMBAI, 10000000, 23);
+        const signature = await buildClobEip712Signature(wallet, Chain.AMOY, 10000000, 23);
         expect(signature).not.null;
         expect(signature).not.undefined;
         expect(signature).not.empty;
         expect(signature).equal(
             // eslint-disable-next-line max-len
-            "0xd91760ebcb14e814e9e12600b9bc7cd6bf13ebc175f6a28538b4925763f94f90012da34dd71290d441c28bc4f9b2281d3eb9ecfd1c9a63db1ce9ca85c89c914c1b",
+            "0xf62319a987514da40e57e2f4d7529f7bac38f0355bd88bb5adbb3768d80de6c1682518e0af677d5260366425f4361e7b70c25ae232aff0ab2331e2b164a1aedc1b",
         );
     });
 });
diff --git a/tests/utilities.test.ts b/tests/utilities.test.ts
index 8a0bc7f..cdf0d20 100644
--- a/tests/utilities.test.ts
+++ b/tests/utilities.test.ts
@@ -246,7 +246,7 @@ describe("utilities", () => {
                         "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80";
                     const address = "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266";
                     const wallet = new Wallet(privateKey);
-                    const chainId = Chain.MUMBAI;
+                    const chainId = Chain.AMOY;
                     const owner = "f4f247b7-4ac7-ff29-a152-04fda0a8755a";
 
                     it("GTD BUY EOA", async () => {
@@ -906,7 +906,7 @@ describe("utilities", () => {
                         "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80";
                     const address = "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266";
                     const wallet = new Wallet(privateKey);
-                    const chainId = Chain.MUMBAI;
+                    const chainId = Chain.AMOY;
                     const owner = "f4f247b7-4ac7-ff29-a152-04fda0a8755a";
 
                     it("GTD BUY EOA", async () => {
@@ -1566,7 +1566,7 @@ describe("utilities", () => {
                         "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80";
                     const address = "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266";
                     const wallet = new Wallet(privateKey);
-                    const chainId = Chain.MUMBAI;
+                    const chainId = Chain.AMOY;
                     const owner = "f4f247b7-4ac7-ff29-a152-04fda0a8755a";
 
                     it("GTD BUY EOA", async () => {
@@ -2226,7 +2226,7 @@ describe("utilities", () => {
                         "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80";
                     const address = "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266";
                     const wallet = new Wallet(privateKey);
-                    const chainId = Chain.MUMBAI;
+                    const chainId = Chain.AMOY;
                     const owner = "f4f247b7-4ac7-ff29-a152-04fda0a8755a";
 
                     it("GTD BUY EOA", async () => {
@@ -2888,7 +2888,7 @@ describe("utilities", () => {
                         "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80";
                     const address = "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266";
                     const wallet = new Wallet(privateKey);
-                    const chainId = Chain.MUMBAI;
+                    const chainId = Chain.AMOY;
                     const owner = "f4f247b7-4ac7-ff29-a152-04fda0a8755a";
 
                     it("GTD BUY EOA", async () => {
@@ -3548,7 +3548,7 @@ describe("utilities", () => {
                         "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80";
                     const address = "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266";
                     const wallet = new Wallet(privateKey);
-                    const chainId = Chain.MUMBAI;
+                    const chainId = Chain.AMOY;
                     const owner = "f4f247b7-4ac7-ff29-a152-04fda0a8755a";
 
                     it("GTD BUY EOA", async () => {
@@ -4208,7 +4208,7 @@ describe("utilities", () => {
                         "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80";
                     const address = "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266";
                     const wallet = new Wallet(privateKey);
-                    const chainId = Chain.MUMBAI;
+                    const chainId = Chain.AMOY;
                     const owner = "f4f247b7-4ac7-ff29-a152-04fda0a8755a";
 
                     it("GTD BUY EOA", async () => {
@@ -4868,7 +4868,7 @@ describe("utilities", () => {
                         "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80";
                     const address = "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266";
                     const wallet = new Wallet(privateKey);
-                    const chainId = Chain.MUMBAI;
+                    const chainId = Chain.AMOY;
                     const owner = "f4f247b7-4ac7-ff29-a152-04fda0a8755a";
 
                     it("GTD BUY EOA", async () => {
diff --git a/yarn.lock b/yarn.lock
index a34d086..f15314d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -697,10 +697,10 @@
     "@nodelib/fs.scandir" "2.1.5"
     fastq "^1.6.0"
 
-"@polymarket/order-utils@^2.0.0":
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/@polymarket/order-utils/-/order-utils-2.0.0.tgz#26e2e8311248c19556f5e14d65a8f69f5bc1a98c"
-  integrity sha512-Ttb/m9bi1kR4ZUkdmtRxM7P7F+gfkseOiM2adAX/wXsebjn1owzZITg34pmRTwDsv89tgLEIkM6aSIDySsa/Gg==
+"@polymarket/order-utils@^2.1.0":
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/@polymarket/order-utils/-/order-utils-2.1.0.tgz#eacf573c139e9e6c59d0244b6e4e52835b687b42"
+  integrity sha512-vUFj1WiEtm4vB0dxx2NweKKioPu7ehBoJ8fTTaVbR8Dur6AazVWyS+KhgrDE66fKTNneOxxgfdEpbNgxZ4pOIA==
   dependencies:
     "@metamask/eth-sig-util" "^5.0.0"
     ethers "^5.7.1"