diff --git a/pulsar-client-cpp.txt b/pulsar-client-cpp.txt
index 40630d9..f79788b 100644
--- a/pulsar-client-cpp.txt
+++ b/pulsar-client-cpp.txt
@@ -1,2 +1,4 @@
-CPP_CLIENT_BASE_URL=https://archive.apache.org/dist/pulsar/pulsar-client-cpp-3.7.0
-CPP_CLIENT_VERSION=3.7.0
+CPP_CLIENT_BASE_URL=https://dist.apache.org/repos/dist/dev/pulsar/pulsar-client-cpp/pulsar-client-cpp-3.8.0-candidate-4
+CPP_CLIENT_VERSION=3.8.0
+
+
diff --git a/tests/producer.test.js b/tests/producer.test.js
index 061d827..4d24929 100644
--- a/tests/producer.test.js
+++ b/tests/producer.test.js
@@ -261,6 +261,7 @@ function getPartition(msgId) {
           // 1. Setup Producer with batching enabled and size limit
           producer = await client.createProducer({
             topic: topicName,
+            messageRoutingMode: 'UseSinglePartition',
             compressionType: 'LZ4',
             batchingEnabled: true,
             batchingMaxMessages: 10000,