diff --git a/openstackclient/common/project_cleanup.py b/openstackclient/common/project_cleanup.py
index 32a1fa7a30..fdd5b3b7ff 100644
--- a/openstackclient/common/project_cleanup.py
+++ b/openstackclient/common/project_cleanup.py
@@ -79,6 +79,12 @@ class ProjectCleanup(command.Command):
             metavar='<YYYY-MM-DDTHH24:MI:SS>',
             help=_('Only delete resources updated before the given time'),
         )
+        parser.add_argument(
+            '--skip-resource',
+            metavar='<resource>',
+            help='Skip cleanup of specific resource (repeat if necessary)',
+            action='append',
+        )
         identity_common.add_project_domain_option_to_parser(parser)
         return parser
 
@@ -114,7 +120,10 @@ class ProjectCleanup(command.Command):
                 filters['updated_at'] = parsed_args.updated_before
 
             project_connect.project_cleanup(
-                dry_run=True, status_queue=status_queue, filters=filters
+                dry_run=True,
+                status_queue=status_queue,
+                filters=filters,
+                skip_resources=parsed_args.skip_resource,
             )
 
             data = []
diff --git a/openstackclient/tests/unit/common/test_project_cleanup.py b/openstackclient/tests/unit/common/test_project_cleanup.py
index 64ecf3ef96..fc09bbfdd5 100644
--- a/openstackclient/tests/unit/common/test_project_cleanup.py
+++ b/openstackclient/tests/unit/common/test_project_cleanup.py
@@ -84,7 +84,12 @@ class TestProjectCleanup(TestProjectCleanupBase):
         filters = {'created_at': '2200-01-01', 'updated_at': '2200-01-02'}
 
         calls = [
-            mock.call(dry_run=True, status_queue=mock.ANY, filters=filters),
+            mock.call(
+                dry_run=True,
+                status_queue=mock.ANY,
+                filters=filters,
+                skip_resources=None,
+            ),
             mock.call(dry_run=False, status_queue=mock.ANY, filters=filters),
         ]
         self.project_cleanup_mock.assert_has_calls(calls)
@@ -110,7 +115,12 @@ class TestProjectCleanup(TestProjectCleanupBase):
 
         self.sdk_connect_as_project_mock.assert_called_with(self.project)
         calls = [
-            mock.call(dry_run=True, status_queue=mock.ANY, filters={}),
+            mock.call(
+                dry_run=True,
+                status_queue=mock.ANY,
+                filters={},
+                skip_resources=None,
+            ),
             mock.call(dry_run=False, status_queue=mock.ANY, filters={}),
         ]
         self.project_cleanup_mock.assert_has_calls(calls)
@@ -135,7 +145,12 @@ class TestProjectCleanup(TestProjectCleanupBase):
 
         self.sdk_connect_as_project_mock.assert_called_with(self.project)
         calls = [
-            mock.call(dry_run=True, status_queue=mock.ANY, filters={}),
+            mock.call(
+                dry_run=True,
+                status_queue=mock.ANY,
+                filters={},
+                skip_resources=None,
+            ),
             mock.call(dry_run=False, status_queue=mock.ANY, filters={}),
         ]
         self.project_cleanup_mock.assert_has_calls(calls)
@@ -160,7 +175,12 @@ class TestProjectCleanup(TestProjectCleanupBase):
 
         self.sdk_connect_as_project_mock.assert_called_with(self.project)
         calls = [
-            mock.call(dry_run=True, status_queue=mock.ANY, filters={}),
+            mock.call(
+                dry_run=True,
+                status_queue=mock.ANY,
+                filters={},
+                skip_resources=None,
+            ),
         ]
         self.project_cleanup_mock.assert_has_calls(calls)
 
@@ -184,7 +204,10 @@ class TestProjectCleanup(TestProjectCleanupBase):
 
         self.sdk_connect_as_project_mock.assert_called_with(self.project)
         self.project_cleanup_mock.assert_called_once_with(
-            dry_run=True, status_queue=mock.ANY, filters={}
+            dry_run=True,
+            status_queue=mock.ANY,
+            filters={},
+            skip_resources=None,
         )
 
         self.assertIsNone(result)
@@ -208,7 +231,42 @@ class TestProjectCleanup(TestProjectCleanupBase):
 
         self.sdk_connect_as_project_mock.assert_not_called()
         calls = [
-            mock.call(dry_run=True, status_queue=mock.ANY, filters={}),
+            mock.call(
+                dry_run=True,
+                status_queue=mock.ANY,
+                filters={},
+                skip_resources=None,
+            ),
+            mock.call(dry_run=False, status_queue=mock.ANY, filters={}),
+        ]
+        self.project_cleanup_mock.assert_has_calls(calls)
+
+        self.assertIsNone(result)
+
+    def test_project_cleanup_with_skip_resource(self):
+        skip_resource = "block_storage.backup"
+        arglist = [
+            '--project',
+            self.project.id,
+            '--skip-resource',
+            skip_resource,
+        ]
+        verifylist = [('skip_resource', [skip_resource])]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+        result = None
+
+        with mock.patch('sys.stdin', StringIO('y')):
+            result = self.cmd.take_action(parsed_args)
+
+        self.sdk_connect_as_project_mock.assert_called_with(self.project)
+
+        calls = [
+            mock.call(
+                dry_run=True,
+                status_queue=mock.ANY,
+                filters={},
+                skip_resources=[skip_resource],
+            ),
             mock.call(dry_run=False, status_queue=mock.ANY, filters={}),
         ]
         self.project_cleanup_mock.assert_has_calls(calls)
diff --git a/releasenotes/notes/project-cleanup-skip-resource-option-4f80db0d8cf36fdb.yaml b/releasenotes/notes/project-cleanup-skip-resource-option-4f80db0d8cf36fdb.yaml
new file mode 100644
index 0000000000..ee1ef89dea
--- /dev/null
+++ b/releasenotes/notes/project-cleanup-skip-resource-option-4f80db0d8cf36fdb.yaml
@@ -0,0 +1,8 @@
+---
+features:
+  - |
+    A new option ``--skip-resource`` has been added to the
+    ``project cleanup`` command. This allows to exclude
+    certain resources from project cleanups, e. g.
+    ``--skip-resource "block_storage.backup"`` to keep
+    Cinder backups.
diff --git a/requirements.txt b/requirements.txt
index 458fb41195..bc95056282 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ pbr!=2.1.0,>=2.0.0 # Apache-2.0
 cryptography>=2.7 # BSD/Apache-2.0
 cliff>=3.5.0 # Apache-2.0
 iso8601>=0.1.11 # MIT
-openstacksdk>=0.103.0 # Apache-2.0
+openstacksdk>=1.4.0 # Apache-2.0
 osc-lib>=2.3.0 # Apache-2.0
 oslo.i18n>=3.15.3 # Apache-2.0
 oslo.utils>=3.33.0 # Apache-2.0