diff --git a/labelbox/client.py b/labelbox/client.py
index a15c62a37..c7a1eb3c7 100644
--- a/labelbox/client.py
+++ b/labelbox/client.py
@@ -1685,3 +1685,30 @@ def delete_feature_schema_from_ontology(
             raise labelbox.exceptions.LabelboxError(
                 "Failed to remove feature schema from ontology, message: " +
                 str(response.json()['message']))
+
+    def unarchive_feature_schema_node(self, ontology_id: str,
+                                      root_feature_schema_id: str) -> None:
+        """
+        Unarchives a feature schema node in an ontology.
+        Only root level feature schema nodes can be unarchived.
+        Args:
+            ontology_id (str): The ID of the ontology
+            root_feature_schema_id (str): The ID of the root level feature schema
+        Returns:
+            None
+        """
+        ontology_endpoint = self.rest_endpoint + "/ontologies/" + urllib.parse.quote(
+            ontology_id) + '/feature-schemas/' + urllib.parse.quote(
+                root_feature_schema_id) + '/unarchive'
+        response = requests.patch(
+            ontology_endpoint,
+            headers=self.headers,
+        )
+        if response.status_code == requests.codes.ok:
+            if not bool(response.json()['unarchived']):
+                raise labelbox.exceptions.LabelboxError(
+                    "Failed unarchive the feature schema.")
+        else:
+            raise labelbox.exceptions.LabelboxError(
+                "Failed unarchive the feature schema node, message: ",
+                response.text)
diff --git a/tests/integration/test_ontology.py b/tests/integration/test_ontology.py
index 415cfa80e..e95e9eff7 100644
--- a/tests/integration/test_ontology.py
+++ b/tests/integration/test_ontology.py
@@ -246,3 +246,30 @@ def test_ontology_create_read(client, rand_gen):
         assert _get_attr_stringify_json(created_ontology,
                                         attr) == _get_attr_stringify_json(
                                             queried_ontology, attr)
+
+
+def test_unarchive_feature_schema_node(client, ontology):
+    feature_schema_to_unarchive = ontology.normalized['tools'][0]
+    result = client.unarchive_feature_schema_node(
+        ontology.uid, feature_schema_to_unarchive['featureSchemaId'])
+    assert result == None
+
+
+def test_unarchive_feature_schema_node_for_non_existing_feature_schema(
+        client, ontology):
+    with pytest.raises(
+            Exception,
+            match=
+            "Failed to find feature schema node by id: invalid-feature-schema-id"
+    ):
+        client.unarchive_feature_schema_node(ontology.uid,
+                                             'invalid-feature-schema-id')
+
+
+def test_unarchive_feature_schema_node_for_non_existing_ontology(
+        client, ontology):
+    feature_schema_to_unarchive = ontology.normalized['tools'][0]
+    with pytest.raises(Exception,
+                       match="Failed to find ontology by id: invalid-ontology"):
+        client.unarchive_feature_schema_node(
+            'invalid-ontology', feature_schema_to_unarchive['featureSchemaId'])