diff --git a/tests/README.md b/tests/README.md
index 3f3a092e..96d09209 100644
--- a/tests/README.md
+++ b/tests/README.md
@@ -30,7 +30,7 @@ npm run stop-test-stack
 
 The local test stack includes the following services:
 
-- **bellecour-fork:** a blockchain node for testing
+- **arbitrum-sepolia-fork:** a blockchain node forking Arbitrum Sepolia for testing
 - **sms:** iExec Secret Management Service (iExec SMS)
 - **result-proxy-mongo:** mongoDB instance to persist data for the result proxy
 - **ipfs:** IPFS node for storing and retrieving task results
diff --git a/tests/unit/fetchMyContacts.test.ts b/tests/unit/fetchMyContacts.test.ts
index 6ee66871..7506bd7d 100644
--- a/tests/unit/fetchMyContacts.test.ts
+++ b/tests/unit/fetchMyContacts.test.ts
@@ -34,7 +34,7 @@ describe('fetchMyContacts', () => {
     },
     orderHash:
       '0x396392835c2cbe933023dd28a3d6eedceb21c52b1dba199835a6f24cc75e7685',
-    chainId: 134,
+    chainId: 421614,
     publicationTimestamp: '2023-06-15T16:39:22.713Z',
     signer: '0xD52C27CC2c7D3fb5BA4440ffa825c12EA5658D60',
     status: 'open',