diff --git a/src/main/java/com/microsoft/graph/requests/GraphServiceClient.java b/src/main/java/com/microsoft/graph/requests/GraphServiceClient.java
index b6e7d69e017..7535cb27492 100644
--- a/src/main/java/com/microsoft/graph/requests/GraphServiceClient.java
+++ b/src/main/java/com/microsoft/graph/requests/GraphServiceClient.java
@@ -18,13 +18,14 @@
 import com.microsoft.graph.authentication.IAuthenticationProvider;
 import com.microsoft.graph.logger.ILogger;
 import com.microsoft.graph.serializer.ISerializer;
+import okhttp3.Call;
 import okhttp3.OkHttpClient;
 import okhttp3.Request;
 
 // **NOTE** This file was generated by a tool and any changes will be overwritten.
 
 /**
- * The class for the Graph Service Client.
+ * The class for the Graph Service Client.
  * @param <nativeRequestType> type of a request for the native http client
  */
 public class GraphServiceClient<nativeRequestType> extends BaseClient<nativeRequestType> implements IBaseClient<nativeRequestType> {
@@ -63,14 +64,14 @@ public static Builder<OkHttpClient, Request> builder() {
      * @return builder to start configuring the client
      */
     @Nonnull
-    public static <nativeClient, nativeRequest> Builder<nativeClient, nativeRequest> builder(@Nonnull final Class<nativeClient> nativeClientClass, @Nonnull final Class<nativeRequest> nativeRequestClass) {
+    public static <nativeClient extends Call.Factory, nativeRequest> Builder<nativeClient, nativeRequest> builder(@Nonnull final Class<nativeClient> nativeClientClass, @Nonnull final Class<nativeRequest> nativeRequestClass) {
         return new Builder<>();
     }
     /**
      * Builder to help configure the Graph service client
      * @param <nativeRequestType> type of a request for the native http client
      */
-    public static class Builder<httpClientType, nativeRequestType> extends BaseClient.Builder<httpClientType, nativeRequestType> {
+    public static class Builder<httpClientType extends Call.Factory, nativeRequestType> extends BaseClient.Builder<httpClientType, nativeRequestType> {
         /**
          * Sets the serializer.
          *