diff --git a/yarn-project/aztec.js/src/api/abi.ts b/yarn-project/aztec.js/src/api/abi.ts
index 7e94b7eb30f..03a5b41d4f2 100644
--- a/yarn-project/aztec.js/src/api/abi.ts
+++ b/yarn-project/aztec.js/src/api/abi.ts
@@ -1,3 +1,3 @@
 export { ContractArtifact, FunctionArtifact, FunctionSelector } from '@aztec/foundation/abi';
-export { loadContractArtifact } from '@aztec/types/abi';
+export { loadContractArtifact, contractArtifactToBuffer, contractArtifactFromBuffer } from '@aztec/types/abi';
 export { NoirCompiledContract } from '@aztec/types/noir';
diff --git a/yarn-project/end-to-end/src/shared/browser.ts b/yarn-project/end-to-end/src/shared/browser.ts
index 42f316b9c7e..9a94d89db75 100644
--- a/yarn-project/end-to-end/src/shared/browser.ts
+++ b/yarn-project/end-to-end/src/shared/browser.ts
@@ -227,11 +227,11 @@ export const browserTestSuite = (
             INITIAL_TEST_SIGNING_KEYS,
             INITIAL_TEST_ACCOUNT_SALTS,
             Buffer,
+            contractArtifactFromBuffer,
           } = window.AztecJs;
           // We serialize the artifact since buffers (used for bytecode) do not cross well from one realm to another
-          const TokenContractArtifact = JSON.parse(
-            Buffer.from(serializedTokenContractArtifact, 'base64').toString('utf-8'),
-            (key, value) => (key === 'bytecode' && typeof value === 'string' ? Buffer.from(value, 'base64') : value),
+          const TokenContractArtifact = contractArtifactFromBuffer(
+            Buffer.from(serializedTokenContractArtifact, 'base64'),
           );
           const pxe = createPXEClient(rpcUrl!);