diff --git a/packages/google-cloud-network-services/tests/unit/gapic/network_services_v1/test_network_services.py b/packages/google-cloud-network-services/tests/unit/gapic/network_services_v1/test_network_services.py
index 0fe26dae461b..a462fe14f986 100644
--- a/packages/google-cloud-network-services/tests/unit/gapic/network_services_v1/test_network_services.py
+++ b/packages/google-cloud-network-services/tests/unit/gapic/network_services_v1/test_network_services.py
@@ -14,7 +14,13 @@
 # limitations under the License.
 #
 import os
-import mock
+
+# try/except added for compatibility with python < 3.8
+try:
+    from unittest import mock
+    from unittest.mock import AsyncMock
+except ImportError:
+    import mock
 
 import grpc
 from grpc.experimental import aio