diff --git a/packages/google-cloud-os-config/tests/unit/gapic/osconfig_v1/test_os_config_service.py b/packages/google-cloud-os-config/tests/unit/gapic/osconfig_v1/test_os_config_service.py
index 29e7d2bb3308..8e6834bdb557 100644
--- a/packages/google-cloud-os-config/tests/unit/gapic/osconfig_v1/test_os_config_service.py
+++ b/packages/google-cloud-os-config/tests/unit/gapic/osconfig_v1/test_os_config_service.py
@@ -13,9 +13,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-import math
 import os
 
+# try/except added for compatibility with python < 3.8
+try:
+    from unittest import mock
+    from unittest.mock import AsyncMock
+except ImportError:
+    import mock
+
+import math
+
 from google.api_core import gapic_v1, grpc_helpers, grpc_helpers_async, path_template
 from google.api_core import client_options
 from google.api_core import exceptions as core_exceptions
@@ -31,7 +39,6 @@
 from google.type import timeofday_pb2  # type: ignore
 import grpc
 from grpc.experimental import aio
-import mock
 from proto.marshal.rules.dates import DurationRule, TimestampRule
 import pytest
 
diff --git a/packages/google-cloud-os-config/tests/unit/gapic/osconfig_v1/test_os_config_zonal_service.py b/packages/google-cloud-os-config/tests/unit/gapic/osconfig_v1/test_os_config_zonal_service.py
index 8a827ce33725..f0e42c66e734 100644
--- a/packages/google-cloud-os-config/tests/unit/gapic/osconfig_v1/test_os_config_zonal_service.py
+++ b/packages/google-cloud-os-config/tests/unit/gapic/osconfig_v1/test_os_config_zonal_service.py
@@ -13,9 +13,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-import math
 import os
 
+# try/except added for compatibility with python < 3.8
+try:
+    from unittest import mock
+    from unittest.mock import AsyncMock
+except ImportError:
+    import mock
+
+import math
+
 from google.api_core import (
     future,
     gapic_v1,
@@ -38,7 +46,6 @@
 from google.protobuf import timestamp_pb2  # type: ignore
 import grpc
 from grpc.experimental import aio
-import mock
 from proto.marshal.rules.dates import DurationRule, TimestampRule
 import pytest
 
diff --git a/packages/google-cloud-os-config/tests/unit/gapic/osconfig_v1alpha/test_os_config_zonal_service.py b/packages/google-cloud-os-config/tests/unit/gapic/osconfig_v1alpha/test_os_config_zonal_service.py
index 1c02cec02f04..463a64d38108 100644
--- a/packages/google-cloud-os-config/tests/unit/gapic/osconfig_v1alpha/test_os_config_zonal_service.py
+++ b/packages/google-cloud-os-config/tests/unit/gapic/osconfig_v1alpha/test_os_config_zonal_service.py
@@ -13,9 +13,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-import math
 import os
 
+# try/except added for compatibility with python < 3.8
+try:
+    from unittest import mock
+    from unittest.mock import AsyncMock
+except ImportError:
+    import mock
+
+import math
+
 from google.api_core import (
     future,
     gapic_v1,
@@ -38,7 +46,6 @@
 from google.protobuf import timestamp_pb2  # type: ignore
 import grpc
 from grpc.experimental import aio
-import mock
 from proto.marshal.rules.dates import DurationRule, TimestampRule
 import pytest