diff --git a/.changelog/unreleased/improvements/4282-test-vectors-with-chain-ids.md b/.changelog/unreleased/improvements/4282-test-vectors-with-chain-ids.md
new file mode 100644
index 0000000000..f624a7c75b
--- /dev/null
+++ b/.changelog/unreleased/improvements/4282-test-vectors-with-chain-ids.md
@@ -0,0 +1,2 @@
+- Make the test vector generator print the chain ID of transactions in expert
+  mode ([\#4282](https://github.com/anoma/namada/issues/4282))
\ No newline at end of file
diff --git a/crates/sdk/src/signing.rs b/crates/sdk/src/signing.rs
index aab0aea0c2..cb3833fd4b 100644
--- a/crates/sdk/src/signing.rs
+++ b/crates/sdk/src/signing.rs
@@ -2182,6 +2182,7 @@ pub async fn to_ledger_vector(
                     .map_err(|e| Error::Other(format!("{}", e)))?,
             );
             tv.output_expert.extend(vec![
+                format!("Chain ID : {}", tx.header.chain_id),
                 format!(
                     "Timestamp : {}",
                     format_timestamp(tx.header.timestamp)