diff --git a/packages/google-cloud-private-ca/tests/unit/gapic/privateca_v1/test_certificate_authority_service.py b/packages/google-cloud-private-ca/tests/unit/gapic/privateca_v1/test_certificate_authority_service.py
index 793dd85e7e18..cd7878fe9716 100644
--- a/packages/google-cloud-private-ca/tests/unit/gapic/privateca_v1/test_certificate_authority_service.py
+++ b/packages/google-cloud-private-ca/tests/unit/gapic/privateca_v1/test_certificate_authority_service.py
@@ -47,6 +47,7 @@
 from google.type import expr_pb2  # type: ignore
 import grpc
 from grpc.experimental import aio
+from proto.marshal.rules import wrappers
 from proto.marshal.rules.dates import DurationRule, TimestampRule
 import pytest
 
diff --git a/packages/google-cloud-private-ca/tests/unit/gapic/privateca_v1beta1/test_certificate_authority_service.py b/packages/google-cloud-private-ca/tests/unit/gapic/privateca_v1beta1/test_certificate_authority_service.py
index 437ad1634a1d..6febcb407f4d 100644
--- a/packages/google-cloud-private-ca/tests/unit/gapic/privateca_v1beta1/test_certificate_authority_service.py
+++ b/packages/google-cloud-private-ca/tests/unit/gapic/privateca_v1beta1/test_certificate_authority_service.py
@@ -47,6 +47,7 @@
 from google.protobuf import wrappers_pb2  # type: ignore
 import grpc
 from grpc.experimental import aio
+from proto.marshal.rules import wrappers
 from proto.marshal.rules.dates import DurationRule, TimestampRule
 import pytest