diff --git a/polarion_rest_api_client/base_client.py b/polarion_rest_api_client/base_client.py
index e1565b76..9e1f73bf 100644
--- a/polarion_rest_api_client/base_client.py
+++ b/polarion_rest_api_client/base_client.py
@@ -249,7 +249,9 @@ def update_work_item(self, work_item: WorkItemType, retry: bool = True):
         """Update the given work item in Polarion.
 
         Only fields not set to None will be updated in Polarion. None
-        fields will stay untouched.
+        fields will stay untouched. If you want to change the Work Item
+        Type, we will extract it from the Work Item passed to this
+        method.
         """
         raise NotImplementedError
 
diff --git a/polarion_rest_api_client/client.py b/polarion_rest_api_client/client.py
index 463fb19a..ce49dcde 100644
--- a/polarion_rest_api_client/client.py
+++ b/polarion_rest_api_client/client.py
@@ -846,11 +846,18 @@ def update_work_item(
         fields will stay untouched.
         """
         assert work_item.id is not None
+        if work_item.type:
+            logger.warning(
+                "Attempting to change the type of Work Item %s to %s.",
+                work_item.id,
+                work_item.type,
+            )
 
         response = patch_work_item.sync_detailed(
             self.project_id,
             work_item.id,
             client=self.client,
+            change_type_to=work_item.type or oa_types.UNSET,
             body=self._build_work_item_patch_request(work_item),
         )
 
diff --git a/tests/test_client_workitems.py b/tests/test_client_workitems.py
index 1350e9ad..3fe005f4 100644
--- a/tests/test_client_workitems.py
+++ b/tests/test_client_workitems.py
@@ -535,6 +535,31 @@ def test_update_work_item_status(
     assert req is not None
     assert req.url.path.endswith("PROJ/workitems/MyWorkItemId")
     assert req.method == "PATCH"
+    assert len(req.url.params) == 0
+    with open(TEST_WI_PATCH_STATUS_REQUEST, encoding="utf8") as f:
+        assert json.loads(req.content.decode()) == json.load(f)
+
+
+def test_update_work_item_type(
+    client: polarion_api.OpenAPIPolarionProjectClient,
+    httpx_mock: pytest_httpx.HTTPXMock,
+):
+    httpx_mock.add_response(204)
+
+    client.update_work_item(
+        polarion_api.WorkItem(
+            id="MyWorkItemId",
+            type="newType",
+            status="open",
+        )
+    )
+
+    req = httpx_mock.get_request()
+
+    assert req is not None
+    assert req.url.path.endswith("PROJ/workitems/MyWorkItemId")
+    assert req.url.params["changeTypeTo"] == "newType"
+    assert req.method == "PATCH"
     with open(TEST_WI_PATCH_STATUS_REQUEST, encoding="utf8") as f:
         assert json.loads(req.content.decode()) == json.load(f)