diff --git a/healthcare/api-client/dicom/dicom_stores_test.py b/healthcare/api-client/dicom/dicom_stores_test.py
index c9b4465f7608..df3688fd0c7b 100644
--- a/healthcare/api-client/dicom/dicom_stores_test.py
+++ b/healthcare/api-client/dicom/dicom_stores_test.py
@@ -14,8 +14,9 @@
 
 import os
 import sys
-import time
+import uuid
 
+from google.cloud import pubsub_v1
 import pytest
 
 # Add datasets for bootstrapping datasets for testing
@@ -28,9 +29,9 @@
 project_id = os.environ['GOOGLE_CLOUD_PROJECT']
 service_account_json = os.environ['GOOGLE_APPLICATION_CREDENTIALS']
 
-dataset_id = 'test_dataset-{}'.format(int(time.time()))
-dicom_store_id = 'test_dicom_store_{}'.format(int(time.time()))
-pubsub_topic = 'test_pubsub_topic_{}'.format(int(time.time()))
+dataset_id = 'test_dataset-{}'.format(uuid.uuid4())
+dicom_store_id = 'test_dicom_store_{}'.format(uuid.uuid4())
+pubsub_topic = 'test_pubsub_topic_{}'.format(uuid.uuid4())
 
 RESOURCES = os.path.join(os.path.dirname(__file__), 'resources')
 bucket = os.environ['CLOUD_STORAGE_BUCKET']
@@ -57,6 +58,19 @@ def test_dataset():
         dataset_id)
 
 
+@pytest.fixture(scope='module')
+def test_pubsub_topic():
+    # Create the Pub/Sub topic
+    pubsub_client = pubsub_v1.PublisherClient()
+    topic_path = pubsub_client.topic_path(project_id, pubsub_topic)
+    pubsub_client.create_topic(topic_path)
+
+    yield pubsub_topic
+
+    # Delete the Pub/Sub topic
+    pubsub_client.delete_topic(topic_path)
+
+
 def test_CRUD_dicom_store(test_dataset, capsys):
     dicom_stores.create_dicom_store(
         service_account_json,
@@ -94,7 +108,7 @@ def test_CRUD_dicom_store(test_dataset, capsys):
     assert 'Deleted DICOM store' in out
 
 
-def test_patch_dicom_store(test_dataset, capsys):
+def test_patch_dicom_store(test_dataset, test_pubsub_topic, capsys):
     dicom_stores.create_dicom_store(
         service_account_json,
         project_id,
@@ -108,7 +122,7 @@ def test_patch_dicom_store(test_dataset, capsys):
         cloud_region,
         dataset_id,
         dicom_store_id,
-        pubsub_topic)
+        test_pubsub_topic)
 
     # Clean up
     dicom_stores.delete_dicom_store(
diff --git a/healthcare/api-client/dicom/requirements.txt b/healthcare/api-client/dicom/requirements.txt
index 959f5ef412d6..2e225a3b186f 100644
--- a/healthcare/api-client/dicom/requirements.txt
+++ b/healthcare/api-client/dicom/requirements.txt
@@ -1,5 +1,5 @@
 google-api-python-client==1.8.2
 google-auth-httplib2==0.0.3
 google-auth==1.14.3
-google-cloud==0.34.0
+google-cloud-pubsub==1.4.3
 requests==2.23.0
diff --git a/healthcare/api-client/v1/dicom/dicom_stores_test.py b/healthcare/api-client/v1/dicom/dicom_stores_test.py
index dc45da9fb79b..332f6f17048d 100644
--- a/healthcare/api-client/v1/dicom/dicom_stores_test.py
+++ b/healthcare/api-client/v1/dicom/dicom_stores_test.py
@@ -17,6 +17,7 @@
 import uuid
 
 import backoff
+from google.cloud import pubsub_v1
 from googleapiclient.errors import HttpError
 import pytest
 
@@ -151,6 +152,19 @@ def clean_up():
     clean_up()
 
 
+@pytest.fixture(scope='module')
+def test_pubsub_topic():
+    pubsub_client = pubsub_v1.PublisherClient()
+    # Create the Pub/Sub topic
+    topic_path = pubsub_client.topic_path(project_id, pubsub_topic)
+    pubsub_client.create_topic(topic_path)
+
+    yield pubsub_topic
+
+    # Delete the Pub/Sub topic
+    pubsub_client.delete_topic(topic_path)
+
+
 def test_CRUD_dicom_store(test_dataset, crud_dicom_store_id, capsys):
     dicom_stores.create_dicom_store(
         project_id, cloud_region, dataset_id, crud_dicom_store_id
@@ -175,9 +189,10 @@ def test_CRUD_dicom_store(test_dataset, crud_dicom_store_id, capsys):
     assert "Deleted DICOM store" in out
 
 
-def test_patch_dicom_store(test_dataset, test_dicom_store, capsys):
+def test_patch_dicom_store(
+        test_dataset, test_dicom_store, test_pubsub_topic, capsys):
     dicom_stores.patch_dicom_store(
-        project_id, cloud_region, dataset_id, dicom_store_id, pubsub_topic
+        project_id, cloud_region, dataset_id, dicom_store_id, test_pubsub_topic
     )
 
     out, _ = capsys.readouterr()
diff --git a/healthcare/api-client/v1/dicom/requirements.txt b/healthcare/api-client/v1/dicom/requirements.txt
index 959f5ef412d6..2e225a3b186f 100644
--- a/healthcare/api-client/v1/dicom/requirements.txt
+++ b/healthcare/api-client/v1/dicom/requirements.txt
@@ -1,5 +1,5 @@
 google-api-python-client==1.8.2
 google-auth-httplib2==0.0.3
 google-auth==1.14.3
-google-cloud==0.34.0
+google-cloud-pubsub==1.4.3
 requests==2.23.0