diff --git a/packages/transactions/src/builders.ts b/packages/transactions/src/builders.ts
index e535396c3..9fb6b2070 100644
--- a/packages/transactions/src/builders.ts
+++ b/packages/transactions/src/builders.ts
@@ -532,11 +532,6 @@ export interface TokenTransferOptions {
   anchorMode: AnchorModeName | AnchorMode;
   /** an arbitrary string to include in the transaction, must be less than 34 bytes */
   memo?: string;
-  /** the post condition mode, specifying whether or not post-conditions must fully cover all
-   * transfered assets */
-  postConditionMode?: PostConditionMode;
-  /** a list of post conditions to add to the transaction */
-  postConditions?: PostCondition[];
   /** set to true if another account is sponsoring the transaction (covering the transaction fee) */
   sponsored?: boolean;
 }
@@ -576,7 +571,6 @@ export async function makeUnsignedSTXTokenTransfer(
     fee: BigInt(0),
     nonce: BigInt(0),
     network: new StacksMainnet(),
-    postConditionMode: PostConditionMode.Deny,
     memo: '',
     sponsored: false,
   };
@@ -615,20 +609,12 @@ export async function makeUnsignedSTXTokenTransfer(
 
   const network = StacksNetwork.fromNameOrNetwork(options.network);
 
-  const postConditions: PostCondition[] = [];
-  if (options.postConditions && options.postConditions.length > 0) {
-    options.postConditions.forEach(postCondition => {
-      postConditions.push(postCondition);
-    });
-  }
-  const lpPostConditions = createLPList(postConditions);
-
   const transaction = new StacksTransaction(
     network.version,
     authorization,
     payload,
-    lpPostConditions,
-    options.postConditionMode,
+    undefined, // no post conditions on STX transfers (see SIP-005)
+    undefined, // no post conditions on STX transfers (see SIP-005)
     options.anchorMode,
     network.chainId
   );
diff --git a/packages/transactions/tests/builder.test.ts b/packages/transactions/tests/builder.test.ts
index d6a61c4c3..9e6371c27 100644
--- a/packages/transactions/tests/builder.test.ts
+++ b/packages/transactions/tests/builder.test.ts
@@ -329,7 +329,7 @@ test('Throws making STX token transder with invalid network name', async () => {
   ).rejects.toThrow(Error);
 });
 
-test('Make STX token transfer with post conditions', async () => {
+test("STX token transfers don't take post conditions", async () => {
   const recipientAddress = 'SP3FGQ8Z7JY9BWYZ5WM53E0M9NK7WHJF0691NZ159';
   const amount = 12345;
   const fee = 0;
@@ -350,18 +350,15 @@ test('Make STX token transfer with post conditions', async () => {
     memo,
     postConditions,
     anchorMode: AnchorMode.Any,
-  });
+  } as SignedTokenTransferOptions);
 
-  const serialized = bytesToHex(transaction.serialize());
+  const serialized = transaction.serialize();
 
-  const tx =
-    '0000000001040015c31b8c1c11c515e244b75806bac48d1399c77500000000000000000000000000000000' +
-    '0001601ceb46ef6988c8b226c80fef4051de6acf344dc67a9421d3e734a72ae310104b061e69cee5d9ee7a' +
-    '6e1cef17f23b07d7fe4db5fcdb83de0d5f08043a06a36a030200000001000216df0ba3e79792be7be5e50a' +
-    '370289accfc8c9e03203000000000000d431000516df0ba3e79792be7be5e50a370289accfc8c9e0320000' +
-    '00000000303974657374206d656d6f00000000000000000000000000000000000000000000000000';
+  const bytesReader = new BytesReader(serialized);
+  const deserializedTx = deserializeTransaction(bytesReader);
 
-  expect(serialized).toBe(tx);
+  expect(deserializedTx.postConditions.values).toHaveLength(0);
+  expect(deserializedTx.postConditionMode).toBe(PostConditionMode.Deny);
 });
 
 test('Make Multi-Sig STX token transfer', async () => {