diff --git a/gitlab/v4/objects/merge_requests.py b/gitlab/v4/objects/merge_requests.py
index edd7d0195..763126068 100644
--- a/gitlab/v4/objects/merge_requests.py
+++ b/gitlab/v4/objects/merge_requests.py
@@ -384,6 +384,8 @@ def merge(
             data["should_remove_source_branch"] = should_remove_source_branch
         if merge_when_pipeline_succeeds is not None:
             data["merge_when_pipeline_succeeds"] = merge_when_pipeline_succeeds
+        
+        data.update(kwargs)
 
         server_data = self.manager.gitlab.http_put(path, post_data=data, **kwargs)
         if TYPE_CHECKING: