diff --git a/src/lib/transactions.ts b/src/lib/transactions.ts
index d6b2a09..6498c33 100644
--- a/src/lib/transactions.ts
+++ b/src/lib/transactions.ts
@@ -1,4 +1,5 @@
 import {
+  AccessList,
   accessListify,
   AccessListish,
   assertArgument,
@@ -54,6 +55,10 @@ export enum TxTypeToPrefix {
   eip1559 = 0x02,
 }
 
+function formatAccessList(value: AccessListish): Array<[ string, Array<string> ]> {
+  return accessListify(value).map((set) => [ set.address, set.storageKeys ]);
+}
+
 interface Field {
   maxLength?: number;
   length?: number;
@@ -106,6 +111,7 @@ export const celoTransactionFields: Record<CeloFieldName, Field> = {
   maxFeePerGas: { maxLength: 32, numeric: true } as Field,
   maxPriorityFeePerGas: { maxLength: 32, numeric: true } as Field,
   maxFeeInFeeCurrency: { maxLength: 32, numeric: true } as Field, 
+
 } as const;
 
 function formatCeloField(name: CeloFieldName, value: any) {
@@ -170,8 +176,7 @@ function prepareEncodeTx(tx: CeloTransaction, signature?: Signature): RlpStructu
         tx.to || "0x",
         tx.value ? toBeHex(tx.value) : "0x",
         tx.data || "0x",
-        // @ts-expect-error
-        tx.accessList || [],
+        formatAccessList(tx.accessList || []),
         (tx as CeloTransactionCip66).feeCurrency || "0x",
         (tx as CeloTransactionCip66).maxFeeInFeeCurrency ? toBeHex((tx as CeloTransactionCip66).maxFeeInFeeCurrency) : "0x",
       ];
@@ -188,8 +193,7 @@ function prepareEncodeTx(tx: CeloTransaction, signature?: Signature): RlpStructu
         tx.to || "0x",
         tx.value ? toBeHex(tx.value) : "0x",
         tx.data || "0x",
-        // @ts-expect-error
-        tx.accessList || [],
+        formatAccessList(tx.accessList || []),
         (tx as CeloTransactionCip64).feeCurrency || "0x",
       ];
       break;
@@ -205,8 +209,7 @@ function prepareEncodeTx(tx: CeloTransaction, signature?: Signature): RlpStructu
         tx.to || "0x",
         tx.value ? toBeHex(tx.value) : "0x",
         tx.data || "0x",
-        // @ts-expect-error
-        tx.accessList || [],
+        formatAccessList(tx.accessList || []),
       ];
       break;
     default:
@@ -258,6 +261,8 @@ export function serializeCeloTransaction(
     if (fieldName in celoTransactionFields) {
       // @ts-expect-error
       txArgs[fieldName as CeloFieldName] = formatCeloField(fieldName as CeloFieldName, fieldValue);
+    } else if (fieldName === 'accessList') {
+      txArgs[fieldName] = fieldValue
     }
   });
 
@@ -339,7 +344,7 @@ export function parseCeloTransaction(rawTransaction: BytesLike): CeloTransaction
         to: handleAddress(transaction[5] as string),
         value: handleBigInt(transaction[6] as string),
         data: transaction[7] as string,
-        accessList: handleAccessList(transaction[8] as string),
+        accessList: handleAccessList(transaction[8]),
         feeCurrency: handleAddress(transaction[9] as string),
         maxFeeInFeeCurrency: handleBigInt(transaction[10] as string),
       } as CeloTransactionCip66;
@@ -469,12 +474,12 @@ function handleBigInt(value: string): bigint {
   return getBigInt(value);
 }
 
-function handleAccessList(value: string): AccessListish | "0x" {
+function handleAccessList(value: any): AccessList {
   if (value === "0x") {
     return accessListify([]);
   }
   // TODO: use value
-  return accessListify([]);
+  return accessListify(value);
 }
 
 const baseTxLengths = {
diff --git a/tests/transactions.unit.test.ts b/tests/transactions.unit.test.ts
index 7c0a76c..195f0c9 100644
--- a/tests/transactions.unit.test.ts
+++ b/tests/transactions.unit.test.ts
@@ -17,6 +17,34 @@ describe('serializeCeloTransaction', () => {
 
     expect(serializeCeloTransaction(tx)).toMatchInlineSnapshot(`"0x7af84b82a4ec01847735940084773594008094f653a42ef024d174bb4be98b67690e5886d01f5f880de0b6b3a764000080c094765de816845861e75a25fca122bb6898b8b1282a860b3a4b56fa00"`);
   });
+  it('can handle accessList', () => {
+    const transaction = serializeCeloTransaction({
+      to: "0xF653A42ef024d174Bb4bE98B67690E5886d01F5F",
+      chainId: 42220,
+      nonce: 1,
+      accessList: [
+        {
+          address: '0x0000000000000000000000000000000000000000',
+          storageKeys: [
+            '0x0000000000000000000000000000000000000000000000000000000000000001',
+            '0x60fdd29ff912ce880cd3edaf9f932dc61d3dae823ea77e0323f94adb9f6a72fe',
+          ],
+        },
+      ],
+    })
+    expect(transaction).toMatchInlineSnapshot(`"0x02f87b82a4ec0180808094f653a42ef024d174bb4be98b67690e5886d01f5f8080f85bf859940000000000000000000000000000000000000000f842a00000000000000000000000000000000000000000000000000000000000000001a060fdd29ff912ce880cd3edaf9f932dc61d3dae823ea77e0323f94adb9f6a72fe"`)
+    expect(parseCeloTransaction(transaction).accessList).toMatchInlineSnapshot(`
+[
+  {
+    "address": "0x0000000000000000000000000000000000000000",
+    "storageKeys": [
+      "0x0000000000000000000000000000000000000000000000000000000000000001",
+      "0x60fdd29ff912ce880cd3edaf9f932dc61d3dae823ea77e0323f94adb9f6a72fe",
+    ],
+  },
+]
+`)
+  })
 });
 describe('parseCeloTransaction', () => {
   it('serializes CIP-66 transaction', () => {