diff --git a/tests/test_node_image_definitions.py b/tests/test_node_image_definitions.py
index cfb2a65..e1e6eab 100644
--- a/tests/test_node_image_definitions.py
+++ b/tests/test_node_image_definitions.py
@@ -293,6 +293,36 @@ def test_remove_dropfolder_image() -> None:
     assert session.delete.mock_calls[0].args[0] == "images/manage/image.qcow2"
 
 
+def test_reload_definitions() -> None:
+    """reload_definitions returns report with node and image definition changes.
+
+    NOTE: LLM-generated test -- verify for correctness.
+    """
+    session = MagicMock()
+    defs = NodeImageDefinitions(session)
+    expected_report = {
+        "node_definitions": {
+            "unchanged": ["iosv", "nxosv"],
+            "updated": ["asav"],
+            "new": ["custom-node"],
+            "removed": ["old-node"],
+            "failed": [],
+        },
+        "image_definitions": {
+            "unchanged": ["iosv-159-3"],
+            "updated": [],
+            "new": ["custom-image"],
+            "removed": [],
+            "failed": ["Error loading bad-image.yaml"],
+        },
+    }
+    session.put.return_value.json.return_value = expected_report
+
+    report = defs.reload_definitions()
+    assert report == expected_report
+    assert session.put.mock_calls[0].args[0] == defs._URL_TEMPLATES["reload_defs"]
+
+
 # everything except str or dict is invalid
 INVALID_DEFINITIONS: dict[str, Any] = {
     "none": None,
diff --git a/virl2_client/models/node_image_definition.py b/virl2_client/models/node_image_definition.py
index 24102bf..9eda0ea 100644
--- a/virl2_client/models/node_image_definition.py
+++ b/virl2_client/models/node_image_definition.py
@@ -28,7 +28,7 @@
 from typing import TYPE_CHECKING, Any, BinaryIO, ClassVar
 
 from ..exceptions import InvalidContentType, InvalidImageFile
-from ..utils import get_url_from_template
+from ..utils import _requires_version, get_url_from_template
 
 if TYPE_CHECKING:
     import httpx
@@ -49,6 +49,7 @@ class NodeImageDefinitions:
         "upload": "images/upload",
         "image_list": "list_image_definition_drop_folder",
         "image_manage": "images/manage/{filename}",
+        "reload_defs": "reload_definitions",
     }
 
     def __init__(self, session: httpx.Client) -> None:
@@ -313,6 +314,30 @@ def remove_image_definition(self, definition_id: str) -> None:
         url = self._url_for("image_def", definition_id=definition_id)
         self._session.delete(url)
 
+    @_requires_version("2.10.0")
+    def reload_definitions(self) -> dict[str, dict[str, list[str]]]:
+        """
+        Reload node and image definitions from disk.
+
+        Triggers a re-scan of node and image definition YAML files,
+        returning a report of changes (unchanged, updated, new, removed, failed).
+
+        Requires CML server >= 2.10.
+
+        Requires admin permission.
+
+        Example::
+
+            report = client_library.definitions.reload_definitions()
+            print(f"New node definitions: {report['node_definitions']['new']}")
+            print(f"Updated image definitions: {report['image_definitions']['updated']}")
+
+        :returns: Report dict with node_definitions and image_definitions keys,
+                  each containing lists of unchanged, updated, new, removed, and failed entries.
+        """
+        url = self._url_for("reload_defs")
+        return self._session.put(url).json()
+
 
 def print_progress_bar(
     cur: int, total: int, start_time: float, length: int = 50