diff --git a/MIGRATION.md b/MIGRATION.md
index 5d1aa1c..84adced 100644
--- a/MIGRATION.md
+++ b/MIGRATION.md
@@ -58,8 +58,11 @@ Use the OpenAI-compatible endpoint and provide project OCID:
 ```java
 import com.oracle.genai.auth.OciAuthConfig;
 import com.oracle.genai.auth.OciOkHttpClientFactory;
+import com.oracle.genai.auth.OciOpenAIHttpClient;
 import com.openai.client.OpenAIClient;
-import com.openai.client.okhttp.OpenAIOkHttpClient;
+import com.openai.client.OpenAIClientImpl;
+import com.openai.core.ClientOptions;
+import okhttp3.OkHttpClient;
 
 OciAuthConfig config = OciAuthConfig.builder()
         .authType("security_token")
@@ -68,12 +71,14 @@ OciAuthConfig config = OciAuthConfig.builder()
 
 OkHttpClient ociHttpClient = OciOkHttpClientFactory.build(config);
 
-OpenAIClient client = OpenAIOkHttpClient.builder()
-        .baseUrl("https://inference.generativeai.<region>.oci.oraclecloud.com/openai/v1")
-        .okHttpClient(ociHttpClient)
+String baseUrl = "https://inference.generativeai.<region>.oci.oraclecloud.com/openai/v1";
+
+OpenAIClient client = new OpenAIClientImpl(ClientOptions.builder()
+        .httpClient(OciOpenAIHttpClient.of(ociHttpClient, baseUrl))
+        .baseUrl(baseUrl)
         .apiKey("not-used")
-        .addHeader("openai-project", "<ocid1.generativeaiproject...>")
-        .build();
+        .putHeader("openai-project", "<ocid1.generativeaiproject...>")
+        .build());
 ```
 
 ## 4) Endpoint and required parameters