diff --git a/.changeset/olive-bobcats-check.md b/.changeset/olive-bobcats-check.md
new file mode 100644
index 0000000000000000000000000000000000000000..91f7158b03326ef8778b2f89383fb7bcd0355b26
--- /dev/null
+++ b/.changeset/olive-bobcats-check.md
@@ -0,0 +1,5 @@
+---
+"llamaindex": patch
+---
+
+Update azure cosmos db
diff --git a/packages/llamaindex/src/storage/kvStore/AzureCosmosNoSqlKVStore.ts b/packages/llamaindex/src/storage/kvStore/AzureCosmosNoSqlKVStore.ts
index 3662c563e91f8ea093186f6e0268a80c25056cf4..f51c1a76e1f8a97a31e15b1f9ab88dd1e26c9e92 100644
--- a/packages/llamaindex/src/storage/kvStore/AzureCosmosNoSqlKVStore.ts
+++ b/packages/llamaindex/src/storage/kvStore/AzureCosmosNoSqlKVStore.ts
@@ -3,7 +3,7 @@ import { Container, CosmosClient, Database } from "@azure/cosmos";
 import { DefaultAzureCredential, type TokenCredential } from "@azure/identity";
 import { BaseKVStore } from "@llamaindex/core/storage/kv-store";
 import { getEnv } from "@llamaindex/env";
-const USER_AGENT_SUFFIX = "LlamaIndex-CDBNoSQL-KVStore-JavaScript";
+const USER_AGENT_SUFFIX = "llamaindex-cdbnosql-kvstore-javascript";
 const DEFAULT_CHAT_DATABASE = "KVStoreDB";
 const DEFAULT_CHAT_CONTAINER = "KVStoreContainer";
 const DEFAULT_OFFER_THROUGHPUT = 400;
@@ -82,7 +82,7 @@ export class AzureCosmosNoSqlKVStore extends BaseKVStore {
     super();
     if (!cosmosClient) {
       throw new Error(
-        "CosmosClient is required for AzureCosmosDBNoSQLVectorStore initialization",
+        "CosmosClient is required for AzureCosmosDBNoSQLKVStore initialization",
       );
     }
     this.cosmosClient = cosmosClient;
diff --git a/packages/llamaindex/src/vector-store/AzureCosmosDBNoSqlVectorStore.ts b/packages/llamaindex/src/vector-store/AzureCosmosDBNoSqlVectorStore.ts
index 2c170a219be2dbe6761d8c46b4465962ba7fd8c9..8aef9b45988611943aa966b5b476b19c5bfc869e 100644
--- a/packages/llamaindex/src/vector-store/AzureCosmosDBNoSqlVectorStore.ts
+++ b/packages/llamaindex/src/vector-store/AzureCosmosDBNoSqlVectorStore.ts
@@ -56,7 +56,7 @@ export interface AzureCosmosDBNoSQLConfig
   readonly idKey?: string;
 }
 
-const USER_AGENT_SUFFIX = "LlamaIndex-CDBNoSQL-VectorStore-JavaScript";
+const USER_AGENT_SUFFIX = "llamaindex-cdbnosql-vectorstore-javascript";
 
 const DEFAULT_VECTOR_EMBEDDING_POLICY = {
   vectorEmbeddings: [