diff --git a/README.md b/README.md
index 9fa8711..5712cea 100644
--- a/README.md
+++ b/README.md
@@ -16,8 +16,7 @@ $ cargo run --bin sample -- -r $YOUR_DEVNET_RPC_ENDPOINT
 ## TypeScript
 
 ```TypeScript
-import { ASSOCIATED_TOKEN_PROGRAM_ID, TOKEN_PROGRAM_ID } from "@solana/spl-token";
-import { Connection, Keypair, PublicKey, Transaction } from "@solana/web3.js";
+import { Connection, Keypair, Transaction } from "@solana/web3.js";
 import base58 from "bs58";
 
 import * as Phoenix from "@ellipsis-labs/phoenix-sdk";
@@ -27,28 +26,36 @@ async function simpleSwap() {
   // DO NOT USE THIS KEYPAIR IN PRODUCTION
   const trader = Keypair.fromSecretKey(
     base58.decode(
-      "2PKwbVQ1YMFEexCmUDyxy8cuwb69VWcvoeodZCLegqof84DJSTiEd89Ak3so9CiHycZwynesTt1JUDFAPFWEzvVs"
-    )
+      "2PKwbVQ1YMFEexCmUDyxy8cuwb69VWcvoeodZCLegqof84DJSTiEd89Ak3so9CiHycZwynesTt1JUDFAPFWEzvVs",
+    ),
   );
 
   // Create a Phoenix client and select a market
   const phoenix = await Phoenix.Client.create(connection);
-  const marketConfig = phoenix.marketConfigs.find((market) => market.name === "SOL/USDC");
+
+  const marketConfig = Array.from(phoenix.marketConfigs.values()).find(
+    (market) => market.name === "SOL/USDC",
+  );
   if (!marketConfig) {
     throw new Error("Market config not found");
   }
+
   const marketState = phoenix.marketStates.get(marketConfig.marketId);
   if (!marketState) {
     throw new Error("Market state not found");
   }
 
-  // Submit a market order buying 100 USDC worth of SOL
-  const tx = marketState.getSwapTransaction({
+  // Build an order packet for a market swap
+  const orderPacket = marketState.getSwapOrderPacket({
     side: Phoenix.Side.Bid,
     inAmount: 100,
-    trader: trader.publicKey,
   });
 
+  // Submit a market order buying 100 USDC worth of SOL
+  const tx = new Transaction().add(
+    marketState.createSwapInstruction(orderPacket, trader.publicKey),
+  );
+
   const txId = await connection.sendTransaction(tx, [trader]);
   console.log("Transaction ID: ", txId);
 }