diff --git a/packages/google-cloud-resource-manager/google/cloud/resource_manager/client.py b/packages/google-cloud-resource-manager/google/cloud/resource_manager/client.py
index 2a4ff91daf21..0bf3f5180a1f 100644
--- a/packages/google-cloud-resource-manager/google/cloud/resource_manager/client.py
+++ b/packages/google-cloud-resource-manager/google/cloud/resource_manager/client.py
@@ -15,7 +15,7 @@
 """A Client for interacting with the Resource Manager API."""
 
 
-from google.api.core import page_iterator
+from google.api_core import page_iterator
 from google.cloud.client import Client as BaseClient
 
 from google.cloud.resource_manager._http import Connection
@@ -151,7 +151,7 @@ def list_projects(self, filter_params=None, page_size=None):
                           single page. If not passed, defaults to a value set
                           by the API.
 
-        :rtype: :class:`~google.api.core.page_iterator.Iterator`
+        :rtype: :class:`~google.api_core.page_iterator.Iterator`
         :returns: Iterator of all
                   :class:`~google.cloud.resource_manager.project.Project`.
                   that the current user has access to.
@@ -176,7 +176,7 @@ def list_projects(self, filter_params=None, page_size=None):
 def _item_to_project(iterator, resource):
     """Convert a JSON project to the native object.
 
-    :type iterator: :class:`~google.api.core.page_iterator.Iterator`
+    :type iterator: :class:`~google.api_core.page_iterator.Iterator`
     :param iterator: The iterator that has retrieved the item.
 
     :type resource: dict
diff --git a/packages/google-cloud-resource-manager/nox.py b/packages/google-cloud-resource-manager/nox.py
index 448ff93fc292..d057ae2cc10c 100644
--- a/packages/google-cloud-resource-manager/nox.py
+++ b/packages/google-cloud-resource-manager/nox.py
@@ -19,7 +19,10 @@
 import nox
 
 
-LOCAL_DEPS = ('../core/',)
+LOCAL_DEPS = (
+    os.path.join('..', 'api_core'),
+    os.path.join('..', 'core'),
+)
 
 
 @nox.session
diff --git a/packages/google-cloud-resource-manager/tests/unit/test_client.py b/packages/google-cloud-resource-manager/tests/unit/test_client.py
index 06ac02cbe627..51a925b56bde 100644
--- a/packages/google-cloud-resource-manager/tests/unit/test_client.py
+++ b/packages/google-cloud-resource-manager/tests/unit/test_client.py
@@ -88,7 +88,7 @@ def test_fetch_project(self):
         self.assertEqual(project.labels, labels)
 
     def test_list_projects_return_type(self):
-        from google.api.core import page_iterator
+        from google.api_core import page_iterator
 
         credentials = _make_credentials()
         client = self._make_one(credentials=credentials)
@@ -227,7 +227,7 @@ def test_list_projects_with_filter(self):
         })
 
     def test_page_empty_response(self):
-        from google.api.core import page_iterator
+        from google.api_core import page_iterator
 
         credentials = _make_credentials()
         client = self._make_one(credentials=credentials)