diff --git a/docs/gl_objects/merge_trains.rst b/docs/gl_objects/merge_trains.rst
index 6d98e04d8..205053045 100644
--- a/docs/gl_objects/merge_trains.rst
+++ b/docs/gl_objects/merge_trains.rst
@@ -9,6 +9,8 @@ Reference
 
   + :class:`gitlab.v4.objects.ProjectMergeTrain`
   + :class:`gitlab.v4.objects.ProjectMergeTrainManager`
+  + :class:`gilab.v4.objects.ProjectMergeTrainMergeRequest`
+  + :class:`gilab.v4.objects.ProjectMergeTrainMergeRequestManager`
   + :attr:`gitlab.v4.objects.Project.merge_trains`
 
 * GitLab API: https://docs.gitlab.com/api/merge_trains
@@ -27,3 +29,13 @@ List active merge trains for a project::
 List completed (have been merged) merge trains for a project::
 
     merge_trains = project.merge_trains.list(scope="complete")
+
+Get Merge Request Status for a Merge Train::
+
+    merge_train_mr = project.merge_trains.get(1, lazy=True).merge_requests.get(1)
+    merge_train_mr_status = merge_train_mr.pipeline.get("status")
+
+Add Merge Request to a Merge Train::
+
+    merge_train_to_update = project.merge_trains.get(1, lazy=True)
+    merge_requests_update = merge_train_to_update.merge_requests.update(5, new_data={"sha": "cd22awr721ssds"})
diff --git a/gitlab/v4/objects/merge_trains.py b/gitlab/v4/objects/merge_trains.py
index a1c5a447d..2b483e157 100644
--- a/gitlab/v4/objects/merge_trains.py
+++ b/gitlab/v4/objects/merge_trains.py
@@ -1,14 +1,43 @@
-from gitlab.base import RESTObject
-from gitlab.mixins import ListMixin
+from gitlab.base import RESTManager, RESTObject
+from gitlab.mixins import GetMixin, ListMixin, UpdateMethod, UpdateMixin
+from gitlab.types import RequiredOptional
 
-__all__ = ["ProjectMergeTrain", "ProjectMergeTrainManager"]
+__all__ = [
+    "ProjectMergeTrain",
+    "ProjectMergeTrainManager",
+    "ProjectMergeTrainMergeRequest",
+    "ProjectMergeTrainMergeRequestManager",
+]
 
 
-class ProjectMergeTrain(RESTObject):
+class ProjectMergeTrainMergeRequest(RESTObject):
     pass
 
 
-class ProjectMergeTrainManager(ListMixin[ProjectMergeTrain]):
+class ProjectMergeTrainMergeRequestManager(
+    GetMixin[ProjectMergeTrainMergeRequest],
+    UpdateMixin[ProjectMergeTrainMergeRequest],
+    RESTManager[ProjectMergeTrainMergeRequest],
+):
+    _path = "/projects/{project_id}/merge_trains/merge_requests"
+    _obj_cls = ProjectMergeTrainMergeRequest
+    _from_parent_attrs = {"project_id": "project_id"}
+    _update_method: UpdateMethod = UpdateMethod.POST
+
+    _update_attrs = RequiredOptional(
+        optional=("sha", "squash", "when_pipeline_succeeds")
+    )
+
+
+class ProjectMergeTrain(RESTObject):
+    merge_requests: ProjectMergeTrainMergeRequestManager
+
+
+class ProjectMergeTrainManager(
+    GetMixin[ProjectMergeTrain],
+    ListMixin[ProjectMergeTrain],
+    RESTManager[ProjectMergeTrain],
+):
     _path = "/projects/{project_id}/merge_trains"
     _obj_cls = ProjectMergeTrain
     _from_parent_attrs = {"project_id": "id"}
diff --git a/gitlab/v4/objects/projects.py b/gitlab/v4/objects/projects.py
index b415a8b98..f74fd64b1 100644
--- a/gitlab/v4/objects/projects.py
+++ b/gitlab/v4/objects/projects.py
@@ -64,7 +64,7 @@
     ProjectApprovalRuleManager,
 )
 from .merge_requests import ProjectMergeRequestManager  # noqa: F401
-from .merge_trains import ProjectMergeTrainManager  # noqa: F401
+from .merge_trains import ProjectMergeTrainManager
 from .milestones import ProjectMilestoneManager  # noqa: F401
 from .notes import ProjectNoteManager  # noqa: F401
 from .notification_settings import ProjectNotificationSettingsManager  # noqa: F401
diff --git a/tests/unit/objects/test_merge_trains.py b/tests/unit/objects/test_merge_trains.py
index f58d04422..fa5fe6221 100644
--- a/tests/unit/objects/test_merge_trains.py
+++ b/tests/unit/objects/test_merge_trains.py
@@ -6,12 +6,12 @@
 import pytest
 import responses
 
-from gitlab.v4.objects import ProjectMergeTrain
+from gitlab.v4.objects import ProjectMergeTrain, ProjectMergeTrainMergeRequest
 
 mr_content = {
     "id": 110,
     "merge_request": {
-        "id": 1,
+        "id": 273,
         "iid": 1,
         "project_id": 3,
         "title": "Test merge train",
@@ -46,6 +46,10 @@
     "duration": 70,
 }
 
+merge_train_update = mr_content.copy()
+merge_train_update["iid"] = 4
+merge_train_update["pipeline"]["sha"] = "ef33a3zxc3"
+
 
 @pytest.fixture
 def resp_list_merge_trains():
@@ -60,7 +64,61 @@ def resp_list_merge_trains():
         yield rsps
 
 
+@pytest.fixture
+def resp_merge_trains_merge_request_get():
+    with responses.RequestsMock() as rsps:
+        rsps.add(
+            method=responses.GET,
+            url="http://localhost/api/v4/projects/1/merge_trains/merge_requests/1",
+            json=mr_content,
+            content_type="application/json",
+            status=200,
+        )
+        yield rsps
+
+
+@pytest.fixture
+def resp_merge_trains_merge_request_post():
+    with responses.RequestsMock() as rsps:
+        rsps.add(
+            method=responses.POST,
+            url="http://localhost/api/v4/projects/1/merge_trains/merge_requests/4",
+            json=[merge_train_update],
+            content_type="application/json",
+            status=200,
+        )
+        yield rsps
+
+
 def test_list_project_merge_requests(project, resp_list_merge_trains):
     merge_trains = project.merge_trains.list()
     assert isinstance(merge_trains[0], ProjectMergeTrain)
     assert merge_trains[0].id == mr_content["id"]
+
+
+def test_merge_trains_status_merge_request(
+    project, resp_merge_trains_merge_request_get
+):
+    merge_train_mr: ProjectMergeTrainMergeRequest = project.merge_trains.get(
+        1, lazy=True
+    ).merge_requests.get(1)
+    assert isinstance(merge_train_mr, ProjectMergeTrainMergeRequest)
+    assert merge_train_mr.get_id() == 110
+    assert merge_train_mr.merge_request["iid"] == mr_content["merge_request"]["iid"]
+    assert merge_train_mr.pipeline.get("status") == mr_content["pipeline"]["status"]
+
+
+def test_merge_train_add_merge_request(project, resp_merge_trains_merge_request_post):
+    merge_train: ProjectMergeTrain = project.merge_trains.get(1, lazy=True)
+    merge_requests_update = merge_train.merge_requests.update(
+        4, new_data={"sha": "ef33a3zxc3"}
+    )
+    assert isinstance(merge_train, ProjectMergeTrain)
+    assert (
+        merge_requests_update[0]["pipeline"]["sha"]
+        == merge_train_update["pipeline"]["sha"]
+    )
+    assert (
+        merge_requests_update[0]["merge_request"]["iid"]
+        == merge_train_update["merge_request"]["iid"]
+    )