diff --git a/releasenotes/notes/add-update-api-to-group-types-client-09c06ccdf80d5003.yaml b/releasenotes/notes/add-update-api-to-group-types-client-09c06ccdf80d5003.yaml
new file mode 100644
index 0000000..14458d6
--- /dev/null
+++ b/releasenotes/notes/add-update-api-to-group-types-client-09c06ccdf80d5003.yaml
@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Add update group types API to v3 ``group_types_client`` library;
+    min_microversion of this API is 3.11.
diff --git a/tempest/api/volume/admin/test_group_types.py b/tempest/api/volume/admin/test_group_types.py
index 0df5fbd..6723207 100644
--- a/tempest/api/volume/admin/test_group_types.py
+++ b/tempest/api/volume/admin/test_group_types.py
@@ -24,7 +24,7 @@
     max_microversion = 'latest'
 
     @decorators.idempotent_id('dd71e5f9-393e-4d4f-90e9-fa1b8d278864')
-    def test_group_type_create_list_show(self):
+    def test_group_type_create_list_update_show(self):
         # Create/list/show group type.
         name = data_utils.rand_name(self.__class__.__name__ + '-group-type')
         description = data_utils.rand_name("group-type-description")
@@ -46,8 +46,19 @@
         self.assertIsInstance(group_list, list)
         self.assertNotEmpty(group_list)
 
+        update_params = {
+            'name': data_utils.rand_name(
+                self.__class__.__name__ + '-updated-group-type'),
+            'description': 'updated-group-type-desc'
+        }
+        updated_group_type = self.admin_group_types_client.update_group_type(
+            body['id'], **update_params)['group_type']
+        for key, expected_val in update_params.items():
+            self.assertEqual(expected_val, updated_group_type[key])
+
         fetched_group_type = self.admin_group_types_client.show_group_type(
             body['id'])['group_type']
+        params.update(update_params)  # Add updated params to original params.
         for key in params.keys():
             self.assertEqual(params[key], fetched_group_type[key],
                              '%s of the fetched group_type is different '
diff --git a/tempest/lib/services/volume/v3/group_types_client.py b/tempest/lib/services/volume/v3/group_types_client.py
index 97bac48..6181472 100644
--- a/tempest/lib/services/volume/v3/group_types_client.py
+++ b/tempest/lib/services/volume/v3/group_types_client.py
@@ -75,3 +75,16 @@
         body = json.loads(body)
         self.expected_success(200, resp.status)
         return rest_client.ResponseBody(resp, body)
+
+    def update_group_type(self, group_type_id, **kwargs):
+        """Updates a group type.
+
+        For a full list of available parameters, please refer to the official
+        API reference:
+        https://developer.openstack.org/api-ref/block-storage/v3/#update-group-type
+        """
+        post_body = json.dumps({'group_type': kwargs})
+        resp, body = self.put('group_types/%s' % group_type_id, post_body)
+        self.expected_success(200, resp.status)
+        body = json.loads(body)
+        return rest_client.ResponseBody(resp, body)
diff --git a/tempest/tests/lib/services/volume/v3/test_group_types_client.py b/tempest/tests/lib/services/volume/v3/test_group_types_client.py
index 0f456a2..e86594e 100644
--- a/tempest/tests/lib/services/volume/v3/test_group_types_client.py
+++ b/tempest/tests/lib/services/volume/v3/test_group_types_client.py
@@ -12,6 +12,8 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+import copy
+
 from tempest.lib.services.volume.v3 import group_types_client
 from tempest.tests.lib import fake_auth_provider
 from tempest.tests.lib.services import base
@@ -97,6 +99,18 @@
             self.FAKE_LIST_GROUP_TYPES,
             bytes_body)
 
+    def _test_update_group_types(self, bytes_body=False):
+        resp_body = copy.deepcopy(self.FAKE_INFO_GROUP_TYPE)
+        resp_body['group_type'].pop('created_at')
+
+        self.check_service_client_function(
+            self.client.update_group_type,
+            'tempest.lib.common.rest_client.RestClient.put',
+            resp_body,
+            bytes_body,
+            group_type_id="3fbbcccf-d058-4502-8844-6feeffdf4cb5",
+            name='updated-group-type-name')
+
     def test_create_group_type_with_str_body(self):
         self._test_create_group_type()
 
@@ -122,3 +136,9 @@
 
     def test_list_group_types_with_bytes_body(self):
         self._test_list_group_types(bytes_body=True)
+
+    def test_update_group_types_with_str_body(self):
+        self._test_update_group_types()
+
+    def test_update_group_types_with_bytes_body(self):
+        self._test_update_group_types(bytes_body=True)