diff --git a/.github/.OwlBot.lock.yaml b/.github/.OwlBot.lock.yaml
index 39ad3cec..44c78f7c 100644
--- a/.github/.OwlBot.lock.yaml
+++ b/.github/.OwlBot.lock.yaml
@@ -13,4 +13,4 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
-  digest: sha256:d22cd2ddce65fdac6986f115563faf2fc81482b09dfbea83ac2808c92ecfdff0
+  digest: sha256:4e1991042fe54b991db9ca17c8fb386e61b22fe4d1472a568bf0fcac85dcf5d3
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index f7b8344c..b46d7305 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -8,9 +8,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: Setup Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: "3.10"
     - name: Install nox
@@ -24,9 +24,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: Setup Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: "3.10"
     - name: Install nox
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 1e8b05c3..f512a496 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -8,9 +8,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: Setup Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: "3.10"
     - name: Install nox
diff --git a/.github/workflows/unittest.yml b/.github/workflows/unittest.yml
index 074ee250..e5be6edb 100644
--- a/.github/workflows/unittest.yml
+++ b/.github/workflows/unittest.yml
@@ -11,9 +11,9 @@ jobs:
         python: ['3.6', '3.7', '3.8', '3.9', '3.10']
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: Setup Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: ${{ matrix.python }}
     - name: Install nox
@@ -26,7 +26,7 @@ jobs:
       run: |
         nox -s unit-${{ matrix.python }}
     - name: Upload coverage results
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v3
       with:
         name: coverage-artifacts
         path: .coverage-${{ matrix.python }}
@@ -37,9 +37,9 @@ jobs:
         - unit
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: Setup Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: "3.10"
     - name: Install coverage
@@ -47,7 +47,7 @@ jobs:
         python -m pip install --upgrade setuptools pip wheel
         python -m pip install coverage
     - name: Download coverage results
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v3
       with:
         name: coverage-artifacts
         path: .coverage-results/
diff --git a/CHANGELOG.md b/CHANGELOG.md
index ba7a0854..716770d5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,14 @@
 
 [1]: https://pypi.org/project/google-cloud-trace/#history
 
+### [1.6.1](https://github.com/googleapis/python-trace/compare/v1.6.0...v1.6.1) (2022-03-05)
+
+
+### Bug Fixes
+
+* **deps:** require google-api-core>=1.31.5, >=2.3.2 ([#193](https://github.com/googleapis/python-trace/issues/193)) ([cef4d52](https://github.com/googleapis/python-trace/commit/cef4d524dcc06216e8d32d738f698b21082ae50f))
+* **deps:** require proto-plus>=1.15.0 ([cef4d52](https://github.com/googleapis/python-trace/commit/cef4d524dcc06216e8d32d738f698b21082ae50f))
+
 ## [1.6.0](https://github.com/googleapis/python-trace/compare/v1.5.1...v1.6.0) (2022-02-11)
 
 
diff --git a/google/cloud/trace/__init__.py b/google/cloud/trace/__init__.py
index 67332818..f69641fb 100644
--- a/google/cloud/trace/__init__.py
+++ b/google/cloud/trace/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v1/__init__.py b/google/cloud/trace_v1/__init__.py
index a42adf14..300eedd0 100644
--- a/google/cloud/trace_v1/__init__.py
+++ b/google/cloud/trace_v1/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v1/services/__init__.py b/google/cloud/trace_v1/services/__init__.py
index 4de65971..e8e1c384 100644
--- a/google/cloud/trace_v1/services/__init__.py
+++ b/google/cloud/trace_v1/services/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v1/services/trace_service/__init__.py b/google/cloud/trace_v1/services/trace_service/__init__.py
index e3ea53d0..9205dfea 100644
--- a/google/cloud/trace_v1/services/trace_service/__init__.py
+++ b/google/cloud/trace_v1/services/trace_service/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v1/services/trace_service/async_client.py b/google/cloud/trace_v1/services/trace_service/async_client.py
index 4bfc469c..0fc21251 100644
--- a/google/cloud/trace_v1/services/trace_service/async_client.py
+++ b/google/cloud/trace_v1/services/trace_service/async_client.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -215,7 +215,7 @@ async def list_traces(
         filter conditions.
 
 
-        .. code-block::
+        .. code-block:: python
 
             from google.cloud import trace_v1
 
@@ -320,7 +320,7 @@ async def get_trace(
     ) -> trace.Trace:
         r"""Gets a single trace by its ID.
 
-        .. code-block::
+        .. code-block:: python
 
             from google.cloud import trace_v1
 
@@ -433,7 +433,7 @@ async def patch_traces(
         a new trace is created.
 
 
-        .. code-block::
+        .. code-block:: python
 
             from google.cloud import trace_v1
 
diff --git a/google/cloud/trace_v1/services/trace_service/client.py b/google/cloud/trace_v1/services/trace_service/client.py
index 1b83fe2b..46a9370e 100644
--- a/google/cloud/trace_v1/services/trace_service/client.py
+++ b/google/cloud/trace_v1/services/trace_service/client.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -400,8 +400,7 @@ def list_traces(
         filter conditions.
 
 
-
-        .. code-block::
+        .. code-block:: python
 
             from google.cloud import trace_v1
 
@@ -496,8 +495,7 @@ def get_trace(
     ) -> trace.Trace:
         r"""Gets a single trace by its ID.
 
-
-        .. code-block::
+        .. code-block:: python
 
             from google.cloud import trace_v1
 
@@ -600,8 +598,7 @@ def patch_traces(
         a new trace is created.
 
 
-
-        .. code-block::
+        .. code-block:: python
 
             from google.cloud import trace_v1
 
diff --git a/google/cloud/trace_v1/services/trace_service/pagers.py b/google/cloud/trace_v1/services/trace_service/pagers.py
index f62a0ccd..7e296197 100644
--- a/google/cloud/trace_v1/services/trace_service/pagers.py
+++ b/google/cloud/trace_v1/services/trace_service/pagers.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v1/services/trace_service/transports/__init__.py b/google/cloud/trace_v1/services/trace_service/transports/__init__.py
index 952e4b26..556989a1 100644
--- a/google/cloud/trace_v1/services/trace_service/transports/__init__.py
+++ b/google/cloud/trace_v1/services/trace_service/transports/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v1/services/trace_service/transports/base.py b/google/cloud/trace_v1/services/trace_service/transports/base.py
index ed8d7f54..c7a9799f 100644
--- a/google/cloud/trace_v1/services/trace_service/transports/base.py
+++ b/google/cloud/trace_v1/services/trace_service/transports/base.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v1/services/trace_service/transports/grpc.py b/google/cloud/trace_v1/services/trace_service/transports/grpc.py
index 4a9b6073..e8afeb42 100644
--- a/google/cloud/trace_v1/services/trace_service/transports/grpc.py
+++ b/google/cloud/trace_v1/services/trace_service/transports/grpc.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v1/services/trace_service/transports/grpc_asyncio.py b/google/cloud/trace_v1/services/trace_service/transports/grpc_asyncio.py
index 35ab81e6..e241c154 100644
--- a/google/cloud/trace_v1/services/trace_service/transports/grpc_asyncio.py
+++ b/google/cloud/trace_v1/services/trace_service/transports/grpc_asyncio.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v1/types/__init__.py b/google/cloud/trace_v1/types/__init__.py
index 9bba2883..ea386532 100644
--- a/google/cloud/trace_v1/types/__init__.py
+++ b/google/cloud/trace_v1/types/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v1/types/trace.py b/google/cloud/trace_v1/types/trace.py
index 3640f2eb..cff0a93d 100644
--- a/google/cloud/trace_v1/types/trace.py
+++ b/google/cloud/trace_v1/types/trace.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v2/__init__.py b/google/cloud/trace_v2/__init__.py
index 126e6b56..a3290028 100644
--- a/google/cloud/trace_v2/__init__.py
+++ b/google/cloud/trace_v2/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v2/services/__init__.py b/google/cloud/trace_v2/services/__init__.py
index 4de65971..e8e1c384 100644
--- a/google/cloud/trace_v2/services/__init__.py
+++ b/google/cloud/trace_v2/services/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v2/services/trace_service/__init__.py b/google/cloud/trace_v2/services/trace_service/__init__.py
index e3ea53d0..9205dfea 100644
--- a/google/cloud/trace_v2/services/trace_service/__init__.py
+++ b/google/cloud/trace_v2/services/trace_service/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v2/services/trace_service/async_client.py b/google/cloud/trace_v2/services/trace_service/async_client.py
index 046d8834..6fc2aa93 100644
--- a/google/cloud/trace_v2/services/trace_service/async_client.py
+++ b/google/cloud/trace_v2/services/trace_service/async_client.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -221,7 +221,7 @@ async def batch_write_spans(
         update existing spans.
 
 
-        .. code-block::
+        .. code-block:: python
 
             from google.cloud import trace_v2
 
@@ -315,7 +315,7 @@ async def create_span(
     ) -> trace.Span:
         r"""Creates a new span.
 
-        .. code-block::
+        .. code-block:: python
 
             from google.cloud import trace_v2
 
diff --git a/google/cloud/trace_v2/services/trace_service/client.py b/google/cloud/trace_v2/services/trace_service/client.py
index d74f296f..1f057c7f 100644
--- a/google/cloud/trace_v2/services/trace_service/client.py
+++ b/google/cloud/trace_v2/services/trace_service/client.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -420,8 +420,7 @@ def batch_write_spans(
         update existing spans.
 
 
-
-        .. code-block::
+        .. code-block:: python
 
             from google.cloud import trace_v2
 
@@ -515,8 +514,7 @@ def create_span(
     ) -> trace.Span:
         r"""Creates a new span.
 
-
-        .. code-block::
+        .. code-block:: python
 
             from google.cloud import trace_v2
 
diff --git a/google/cloud/trace_v2/services/trace_service/transports/__init__.py b/google/cloud/trace_v2/services/trace_service/transports/__init__.py
index 952e4b26..556989a1 100644
--- a/google/cloud/trace_v2/services/trace_service/transports/__init__.py
+++ b/google/cloud/trace_v2/services/trace_service/transports/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v2/services/trace_service/transports/base.py b/google/cloud/trace_v2/services/trace_service/transports/base.py
index 698a5aa0..d3a9b410 100644
--- a/google/cloud/trace_v2/services/trace_service/transports/base.py
+++ b/google/cloud/trace_v2/services/trace_service/transports/base.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v2/services/trace_service/transports/grpc.py b/google/cloud/trace_v2/services/trace_service/transports/grpc.py
index fe3db80b..914be71a 100644
--- a/google/cloud/trace_v2/services/trace_service/transports/grpc.py
+++ b/google/cloud/trace_v2/services/trace_service/transports/grpc.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v2/services/trace_service/transports/grpc_asyncio.py b/google/cloud/trace_v2/services/trace_service/transports/grpc_asyncio.py
index 3594da7d..993b9159 100644
--- a/google/cloud/trace_v2/services/trace_service/transports/grpc_asyncio.py
+++ b/google/cloud/trace_v2/services/trace_service/transports/grpc_asyncio.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v2/types/__init__.py b/google/cloud/trace_v2/types/__init__.py
index 0f28e15e..e907e981 100644
--- a/google/cloud/trace_v2/types/__init__.py
+++ b/google/cloud/trace_v2/types/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v2/types/trace.py b/google/cloud/trace_v2/types/trace.py
index 99061b09..0bc816b8 100644
--- a/google/cloud/trace_v2/types/trace.py
+++ b/google/cloud/trace_v2/types/trace.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/trace_v2/types/tracing.py b/google/cloud/trace_v2/types/tracing.py
index 98fbff3f..8cbfa56d 100644
--- a/google/cloud/trace_v2/types/tracing.py
+++ b/google/cloud/trace_v2/types/tracing.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/samples/generated_samples/cloudtrace_generated_trace_v1_trace_service_get_trace_async.py b/samples/generated_samples/cloudtrace_v1_generated_trace_service_get_trace_async.py
similarity index 89%
rename from samples/generated_samples/cloudtrace_generated_trace_v1_trace_service_get_trace_async.py
rename to samples/generated_samples/cloudtrace_v1_generated_trace_service_get_trace_async.py
index c458d4f4..58c3ce91 100644
--- a/samples/generated_samples/cloudtrace_generated_trace_v1_trace_service_get_trace_async.py
+++ b/samples/generated_samples/cloudtrace_v1_generated_trace_service_get_trace_async.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@
 #   python3 -m pip install google-cloud-trace
 
 
-# [START cloudtrace_generated_trace_v1_TraceService_GetTrace_async]
+# [START cloudtrace_v1_generated_TraceService_GetTrace_async]
 from google.cloud import trace_v1
 
 
@@ -43,4 +43,4 @@ async def sample_get_trace():
     # Handle the response
     print(response)
 
-# [END cloudtrace_generated_trace_v1_TraceService_GetTrace_async]
+# [END cloudtrace_v1_generated_TraceService_GetTrace_async]
diff --git a/samples/generated_samples/cloudtrace_generated_trace_v1_trace_service_get_trace_sync.py b/samples/generated_samples/cloudtrace_v1_generated_trace_service_get_trace_sync.py
similarity index 89%
rename from samples/generated_samples/cloudtrace_generated_trace_v1_trace_service_get_trace_sync.py
rename to samples/generated_samples/cloudtrace_v1_generated_trace_service_get_trace_sync.py
index 2439ca6f..d2da8e80 100644
--- a/samples/generated_samples/cloudtrace_generated_trace_v1_trace_service_get_trace_sync.py
+++ b/samples/generated_samples/cloudtrace_v1_generated_trace_service_get_trace_sync.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@
 #   python3 -m pip install google-cloud-trace
 
 
-# [START cloudtrace_generated_trace_v1_TraceService_GetTrace_sync]
+# [START cloudtrace_v1_generated_TraceService_GetTrace_sync]
 from google.cloud import trace_v1
 
 
@@ -43,4 +43,4 @@ def sample_get_trace():
     # Handle the response
     print(response)
 
-# [END cloudtrace_generated_trace_v1_TraceService_GetTrace_sync]
+# [END cloudtrace_v1_generated_TraceService_GetTrace_sync]
diff --git a/samples/generated_samples/cloudtrace_generated_trace_v1_trace_service_list_traces_async.py b/samples/generated_samples/cloudtrace_v1_generated_trace_service_list_traces_async.py
similarity index 88%
rename from samples/generated_samples/cloudtrace_generated_trace_v1_trace_service_list_traces_async.py
rename to samples/generated_samples/cloudtrace_v1_generated_trace_service_list_traces_async.py
index 6c754972..9d2cc81a 100644
--- a/samples/generated_samples/cloudtrace_generated_trace_v1_trace_service_list_traces_async.py
+++ b/samples/generated_samples/cloudtrace_v1_generated_trace_service_list_traces_async.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@
 #   python3 -m pip install google-cloud-trace
 
 
-# [START cloudtrace_generated_trace_v1_TraceService_ListTraces_async]
+# [START cloudtrace_v1_generated_TraceService_ListTraces_async]
 from google.cloud import trace_v1
 
 
@@ -43,4 +43,4 @@ async def sample_list_traces():
     async for response in page_result:
         print(response)
 
-# [END cloudtrace_generated_trace_v1_TraceService_ListTraces_async]
+# [END cloudtrace_v1_generated_TraceService_ListTraces_async]
diff --git a/samples/generated_samples/cloudtrace_generated_trace_v1_trace_service_list_traces_sync.py b/samples/generated_samples/cloudtrace_v1_generated_trace_service_list_traces_sync.py
similarity index 88%
rename from samples/generated_samples/cloudtrace_generated_trace_v1_trace_service_list_traces_sync.py
rename to samples/generated_samples/cloudtrace_v1_generated_trace_service_list_traces_sync.py
index 5a4ab7f1..f08e9278 100644
--- a/samples/generated_samples/cloudtrace_generated_trace_v1_trace_service_list_traces_sync.py
+++ b/samples/generated_samples/cloudtrace_v1_generated_trace_service_list_traces_sync.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@
 #   python3 -m pip install google-cloud-trace
 
 
-# [START cloudtrace_generated_trace_v1_TraceService_ListTraces_sync]
+# [START cloudtrace_v1_generated_TraceService_ListTraces_sync]
 from google.cloud import trace_v1
 
 
@@ -43,4 +43,4 @@ def sample_list_traces():
     for response in page_result:
         print(response)
 
-# [END cloudtrace_generated_trace_v1_TraceService_ListTraces_sync]
+# [END cloudtrace_v1_generated_TraceService_ListTraces_sync]
diff --git a/samples/generated_samples/cloudtrace_generated_trace_v1_trace_service_patch_traces_async.py b/samples/generated_samples/cloudtrace_v1_generated_trace_service_patch_traces_async.py
similarity index 88%
rename from samples/generated_samples/cloudtrace_generated_trace_v1_trace_service_patch_traces_async.py
rename to samples/generated_samples/cloudtrace_v1_generated_trace_service_patch_traces_async.py
index f98d84dc..409990e7 100644
--- a/samples/generated_samples/cloudtrace_generated_trace_v1_trace_service_patch_traces_async.py
+++ b/samples/generated_samples/cloudtrace_v1_generated_trace_service_patch_traces_async.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@
 #   python3 -m pip install google-cloud-trace
 
 
-# [START cloudtrace_generated_trace_v1_TraceService_PatchTraces_async]
+# [START cloudtrace_v1_generated_TraceService_PatchTraces_async]
 from google.cloud import trace_v1
 
 
@@ -40,4 +40,4 @@ async def sample_patch_traces():
     await client.patch_traces(request=request)
 
 
-# [END cloudtrace_generated_trace_v1_TraceService_PatchTraces_async]
+# [END cloudtrace_v1_generated_TraceService_PatchTraces_async]
diff --git a/samples/generated_samples/cloudtrace_generated_trace_v1_trace_service_patch_traces_sync.py b/samples/generated_samples/cloudtrace_v1_generated_trace_service_patch_traces_sync.py
similarity index 88%
rename from samples/generated_samples/cloudtrace_generated_trace_v1_trace_service_patch_traces_sync.py
rename to samples/generated_samples/cloudtrace_v1_generated_trace_service_patch_traces_sync.py
index 22a3d77b..a5e5866d 100644
--- a/samples/generated_samples/cloudtrace_generated_trace_v1_trace_service_patch_traces_sync.py
+++ b/samples/generated_samples/cloudtrace_v1_generated_trace_service_patch_traces_sync.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@
 #   python3 -m pip install google-cloud-trace
 
 
-# [START cloudtrace_generated_trace_v1_TraceService_PatchTraces_sync]
+# [START cloudtrace_v1_generated_TraceService_PatchTraces_sync]
 from google.cloud import trace_v1
 
 
@@ -40,4 +40,4 @@ def sample_patch_traces():
     client.patch_traces(request=request)
 
 
-# [END cloudtrace_generated_trace_v1_TraceService_PatchTraces_sync]
+# [END cloudtrace_v1_generated_TraceService_PatchTraces_sync]
diff --git a/samples/generated_samples/cloudtrace_generated_trace_v2_trace_service_batch_write_spans_async.py b/samples/generated_samples/cloudtrace_v2_generated_trace_service_batch_write_spans_async.py
similarity index 88%
rename from samples/generated_samples/cloudtrace_generated_trace_v2_trace_service_batch_write_spans_async.py
rename to samples/generated_samples/cloudtrace_v2_generated_trace_service_batch_write_spans_async.py
index e5e9e5ab..e16cd648 100644
--- a/samples/generated_samples/cloudtrace_generated_trace_v2_trace_service_batch_write_spans_async.py
+++ b/samples/generated_samples/cloudtrace_v2_generated_trace_service_batch_write_spans_async.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@
 #   python3 -m pip install google-cloud-trace
 
 
-# [START cloudtrace_generated_trace_v2_TraceService_BatchWriteSpans_async]
+# [START cloudtrace_v2_generated_TraceService_BatchWriteSpans_async]
 from google.cloud import trace_v2
 
 
@@ -45,4 +45,4 @@ async def sample_batch_write_spans():
     await client.batch_write_spans(request=request)
 
 
-# [END cloudtrace_generated_trace_v2_TraceService_BatchWriteSpans_async]
+# [END cloudtrace_v2_generated_TraceService_BatchWriteSpans_async]
diff --git a/samples/generated_samples/cloudtrace_generated_trace_v2_trace_service_batch_write_spans_sync.py b/samples/generated_samples/cloudtrace_v2_generated_trace_service_batch_write_spans_sync.py
similarity index 88%
rename from samples/generated_samples/cloudtrace_generated_trace_v2_trace_service_batch_write_spans_sync.py
rename to samples/generated_samples/cloudtrace_v2_generated_trace_service_batch_write_spans_sync.py
index 2cca7e84..ea21854d 100644
--- a/samples/generated_samples/cloudtrace_generated_trace_v2_trace_service_batch_write_spans_sync.py
+++ b/samples/generated_samples/cloudtrace_v2_generated_trace_service_batch_write_spans_sync.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@
 #   python3 -m pip install google-cloud-trace
 
 
-# [START cloudtrace_generated_trace_v2_TraceService_BatchWriteSpans_sync]
+# [START cloudtrace_v2_generated_TraceService_BatchWriteSpans_sync]
 from google.cloud import trace_v2
 
 
@@ -45,4 +45,4 @@ def sample_batch_write_spans():
     client.batch_write_spans(request=request)
 
 
-# [END cloudtrace_generated_trace_v2_TraceService_BatchWriteSpans_sync]
+# [END cloudtrace_v2_generated_TraceService_BatchWriteSpans_sync]
diff --git a/samples/generated_samples/cloudtrace_generated_trace_v2_trace_service_create_span_async.py b/samples/generated_samples/cloudtrace_v2_generated_trace_service_create_span_async.py
similarity index 88%
rename from samples/generated_samples/cloudtrace_generated_trace_v2_trace_service_create_span_async.py
rename to samples/generated_samples/cloudtrace_v2_generated_trace_service_create_span_async.py
index 483deac0..f4a25604 100644
--- a/samples/generated_samples/cloudtrace_generated_trace_v2_trace_service_create_span_async.py
+++ b/samples/generated_samples/cloudtrace_v2_generated_trace_service_create_span_async.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@
 #   python3 -m pip install google-cloud-trace
 
 
-# [START cloudtrace_generated_trace_v2_TraceService_CreateSpan_async]
+# [START cloudtrace_v2_generated_TraceService_CreateSpan_async]
 from google.cloud import trace_v2
 
 
@@ -43,4 +43,4 @@ async def sample_create_span():
     # Handle the response
     print(response)
 
-# [END cloudtrace_generated_trace_v2_TraceService_CreateSpan_async]
+# [END cloudtrace_v2_generated_TraceService_CreateSpan_async]
diff --git a/samples/generated_samples/cloudtrace_generated_trace_v2_trace_service_create_span_sync.py b/samples/generated_samples/cloudtrace_v2_generated_trace_service_create_span_sync.py
similarity index 88%
rename from samples/generated_samples/cloudtrace_generated_trace_v2_trace_service_create_span_sync.py
rename to samples/generated_samples/cloudtrace_v2_generated_trace_service_create_span_sync.py
index 338261b8..a2ad4a63 100644
--- a/samples/generated_samples/cloudtrace_generated_trace_v2_trace_service_create_span_sync.py
+++ b/samples/generated_samples/cloudtrace_v2_generated_trace_service_create_span_sync.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@
 #   python3 -m pip install google-cloud-trace
 
 
-# [START cloudtrace_generated_trace_v2_TraceService_CreateSpan_sync]
+# [START cloudtrace_v2_generated_TraceService_CreateSpan_sync]
 from google.cloud import trace_v2
 
 
@@ -43,4 +43,4 @@ def sample_create_span():
     # Handle the response
     print(response)
 
-# [END cloudtrace_generated_trace_v2_TraceService_CreateSpan_sync]
+# [END cloudtrace_v2_generated_TraceService_CreateSpan_sync]
diff --git a/samples/generated_samples/snippet_metadata_trace_v1.json b/samples/generated_samples/snippet_metadata_trace_v1.json
index 8e55b812..67cb53d3 100644
--- a/samples/generated_samples/snippet_metadata_trace_v1.json
+++ b/samples/generated_samples/snippet_metadata_trace_v1.json
@@ -10,8 +10,8 @@
           "shortName": "GetTrace"
         }
       },
-      "file": "cloudtrace_generated_trace_v1_trace_service_get_trace_async.py",
-      "regionTag": "cloudtrace_generated_trace_v1_TraceService_GetTrace_async",
+      "file": "cloudtrace_v1_generated_trace_service_get_trace_async.py",
+      "regionTag": "cloudtrace_v1_generated_TraceService_GetTrace_async",
       "segments": [
         {
           "end": 45,
@@ -54,8 +54,8 @@
           "shortName": "GetTrace"
         }
       },
-      "file": "cloudtrace_generated_trace_v1_trace_service_get_trace_sync.py",
-      "regionTag": "cloudtrace_generated_trace_v1_TraceService_GetTrace_sync",
+      "file": "cloudtrace_v1_generated_trace_service_get_trace_sync.py",
+      "regionTag": "cloudtrace_v1_generated_TraceService_GetTrace_sync",
       "segments": [
         {
           "end": 45,
@@ -99,8 +99,8 @@
           "shortName": "ListTraces"
         }
       },
-      "file": "cloudtrace_generated_trace_v1_trace_service_list_traces_async.py",
-      "regionTag": "cloudtrace_generated_trace_v1_TraceService_ListTraces_async",
+      "file": "cloudtrace_v1_generated_trace_service_list_traces_async.py",
+      "regionTag": "cloudtrace_v1_generated_TraceService_ListTraces_async",
       "segments": [
         {
           "end": 45,
@@ -143,8 +143,8 @@
           "shortName": "ListTraces"
         }
       },
-      "file": "cloudtrace_generated_trace_v1_trace_service_list_traces_sync.py",
-      "regionTag": "cloudtrace_generated_trace_v1_TraceService_ListTraces_sync",
+      "file": "cloudtrace_v1_generated_trace_service_list_traces_sync.py",
+      "regionTag": "cloudtrace_v1_generated_TraceService_ListTraces_sync",
       "segments": [
         {
           "end": 45,
@@ -188,8 +188,8 @@
           "shortName": "PatchTraces"
         }
       },
-      "file": "cloudtrace_generated_trace_v1_trace_service_patch_traces_async.py",
-      "regionTag": "cloudtrace_generated_trace_v1_TraceService_PatchTraces_async",
+      "file": "cloudtrace_v1_generated_trace_service_patch_traces_async.py",
+      "regionTag": "cloudtrace_v1_generated_TraceService_PatchTraces_async",
       "segments": [
         {
           "end": 42,
@@ -230,8 +230,8 @@
           "shortName": "PatchTraces"
         }
       },
-      "file": "cloudtrace_generated_trace_v1_trace_service_patch_traces_sync.py",
-      "regionTag": "cloudtrace_generated_trace_v1_TraceService_PatchTraces_sync",
+      "file": "cloudtrace_v1_generated_trace_service_patch_traces_sync.py",
+      "regionTag": "cloudtrace_v1_generated_TraceService_PatchTraces_sync",
       "segments": [
         {
           "end": 42,
diff --git a/samples/generated_samples/snippet_metadata_trace_v2.json b/samples/generated_samples/snippet_metadata_trace_v2.json
index 6445bdc6..1822311f 100644
--- a/samples/generated_samples/snippet_metadata_trace_v2.json
+++ b/samples/generated_samples/snippet_metadata_trace_v2.json
@@ -10,8 +10,8 @@
           "shortName": "BatchWriteSpans"
         }
       },
-      "file": "cloudtrace_generated_trace_v2_trace_service_batch_write_spans_async.py",
-      "regionTag": "cloudtrace_generated_trace_v2_TraceService_BatchWriteSpans_async",
+      "file": "cloudtrace_v2_generated_trace_service_batch_write_spans_async.py",
+      "regionTag": "cloudtrace_v2_generated_TraceService_BatchWriteSpans_async",
       "segments": [
         {
           "end": 47,
@@ -52,8 +52,8 @@
           "shortName": "BatchWriteSpans"
         }
       },
-      "file": "cloudtrace_generated_trace_v2_trace_service_batch_write_spans_sync.py",
-      "regionTag": "cloudtrace_generated_trace_v2_TraceService_BatchWriteSpans_sync",
+      "file": "cloudtrace_v2_generated_trace_service_batch_write_spans_sync.py",
+      "regionTag": "cloudtrace_v2_generated_TraceService_BatchWriteSpans_sync",
       "segments": [
         {
           "end": 47,
@@ -95,8 +95,8 @@
           "shortName": "CreateSpan"
         }
       },
-      "file": "cloudtrace_generated_trace_v2_trace_service_create_span_async.py",
-      "regionTag": "cloudtrace_generated_trace_v2_TraceService_CreateSpan_async",
+      "file": "cloudtrace_v2_generated_trace_service_create_span_async.py",
+      "regionTag": "cloudtrace_v2_generated_TraceService_CreateSpan_async",
       "segments": [
         {
           "end": 45,
@@ -139,8 +139,8 @@
           "shortName": "CreateSpan"
         }
       },
-      "file": "cloudtrace_generated_trace_v2_trace_service_create_span_sync.py",
-      "regionTag": "cloudtrace_generated_trace_v2_TraceService_CreateSpan_sync",
+      "file": "cloudtrace_v2_generated_trace_service_create_span_sync.py",
+      "regionTag": "cloudtrace_v2_generated_TraceService_CreateSpan_sync",
       "segments": [
         {
           "end": 45,
diff --git a/samples/snippets/noxfile.py b/samples/snippets/noxfile.py
index 20cdfc62..4c808af7 100644
--- a/samples/snippets/noxfile.py
+++ b/samples/snippets/noxfile.py
@@ -188,42 +188,54 @@ def _session_tests(
     # check for presence of tests
     test_list = glob.glob("*_test.py") + glob.glob("test_*.py")
     test_list.extend(glob.glob("tests"))
+
     if len(test_list) == 0:
         print("No tests found, skipping directory.")
-    else:
-        if TEST_CONFIG["pip_version_override"]:
-            pip_version = TEST_CONFIG["pip_version_override"]
-            session.install(f"pip=={pip_version}")
-        """Runs py.test for a particular project."""
-        if os.path.exists("requirements.txt"):
-            if os.path.exists("constraints.txt"):
-                session.install("-r", "requirements.txt", "-c", "constraints.txt")
-            else:
-                session.install("-r", "requirements.txt")
-
-        if os.path.exists("requirements-test.txt"):
-            if os.path.exists("constraints-test.txt"):
-                session.install(
-                    "-r", "requirements-test.txt", "-c", "constraints-test.txt"
-                )
-            else:
-                session.install("-r", "requirements-test.txt")
-
-        if INSTALL_LIBRARY_FROM_SOURCE:
-            session.install("-e", _get_repo_root())
-
-        if post_install:
-            post_install(session)
-
-        session.run(
-            "pytest",
-            *(PYTEST_COMMON_ARGS + session.posargs),
-            # Pytest will return 5 when no tests are collected. This can happen
-            # on travis where slow and flaky tests are excluded.
-            # See http://doc.pytest.org/en/latest/_modules/_pytest/main.html
-            success_codes=[0, 5],
-            env=get_pytest_env_vars(),
-        )
+        return
+
+    if TEST_CONFIG["pip_version_override"]:
+        pip_version = TEST_CONFIG["pip_version_override"]
+        session.install(f"pip=={pip_version}")
+    """Runs py.test for a particular project."""
+    concurrent_args = []
+    if os.path.exists("requirements.txt"):
+        if os.path.exists("constraints.txt"):
+            session.install("-r", "requirements.txt", "-c", "constraints.txt")
+        else:
+            session.install("-r", "requirements.txt")
+        with open("requirements.txt") as rfile:
+            packages = rfile.read()
+
+    if os.path.exists("requirements-test.txt"):
+        if os.path.exists("constraints-test.txt"):
+            session.install(
+                "-r", "requirements-test.txt", "-c", "constraints-test.txt"
+            )
+        else:
+            session.install("-r", "requirements-test.txt")
+        with open("requirements-test.txt") as rtfile:
+            packages += rtfile.read()
+
+    if INSTALL_LIBRARY_FROM_SOURCE:
+        session.install("-e", _get_repo_root())
+
+    if post_install:
+        post_install(session)
+
+    if "pytest-parallel" in packages:
+        concurrent_args.extend(['--workers', 'auto', '--tests-per-worker', 'auto'])
+    elif "pytest-xdist" in packages:
+        concurrent_args.extend(['-n', 'auto'])
+
+    session.run(
+        "pytest",
+        *(PYTEST_COMMON_ARGS + session.posargs + concurrent_args),
+        # Pytest will return 5 when no tests are collected. This can happen
+        # on travis where slow and flaky tests are excluded.
+        # See http://doc.pytest.org/en/latest/_modules/_pytest/main.html
+        success_codes=[0, 5],
+        env=get_pytest_env_vars(),
+    )
 
 
 @nox.session(python=ALL_VERSIONS)
diff --git a/samples/snippets/requirements-test.txt b/samples/snippets/requirements-test.txt
index 618cbcc9..76593bb6 100644
--- a/samples/snippets/requirements-test.txt
+++ b/samples/snippets/requirements-test.txt
@@ -1 +1 @@
-pytest==7.0.0
\ No newline at end of file
+pytest==7.0.1
\ No newline at end of file
diff --git a/samples/snippets/requirements.txt b/samples/snippets/requirements.txt
index aaaa0b27..2f911a9e 100644
--- a/samples/snippets/requirements.txt
+++ b/samples/snippets/requirements.txt
@@ -1 +1 @@
-google-cloud-trace==1.5.1
\ No newline at end of file
+google-cloud-trace==1.6.0
\ No newline at end of file
diff --git a/scripts/fixup_trace_v1_keywords.py b/scripts/fixup_trace_v1_keywords.py
index 6d48d47c..0b682caf 100644
--- a/scripts/fixup_trace_v1_keywords.py
+++ b/scripts/fixup_trace_v1_keywords.py
@@ -1,6 +1,6 @@
 #! /usr/bin/env python3
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/scripts/fixup_trace_v2_keywords.py b/scripts/fixup_trace_v2_keywords.py
index f27a9b76..e9f668e1 100644
--- a/scripts/fixup_trace_v2_keywords.py
+++ b/scripts/fixup_trace_v2_keywords.py
@@ -1,6 +1,6 @@
 #! /usr/bin/env python3
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/setup.py b/setup.py
index 3360b956..6a5bd884 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@
 
 name = "google-cloud-trace"
 description = "Cloud Trace API client library"
-version = "1.6.0"
+version = "1.6.1"
 # Should be one of:
 # 'Development Status :: 3 - Alpha'
 # 'Development Status :: 4 - Beta'
@@ -32,8 +32,8 @@
     # NOTE: Maintainers, please do not require google-api-core>=2.x.x
     # Until this issue is closed
     # https://github.com/googleapis/google-cloud-python/issues/10566
-    "google-api-core[grpc] >= 1.28.0, <3.0.0dev",
-    "proto-plus >= 1.4.0",
+    "google-api-core[grpc] >= 1.31.5, <3.0.0dev,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.0",
+    "proto-plus >= 1.15.0",
 ]
 extras = {}
 
diff --git a/testing/constraints-3.6.txt b/testing/constraints-3.6.txt
index 6b451bc3..b666ca6c 100644
--- a/testing/constraints-3.6.txt
+++ b/testing/constraints-3.6.txt
@@ -5,5 +5,5 @@
 #
 # e.g., if setup.py has "foo >= 1.14.0, < 2.0.0dev",
 # Then this file should have foo==1.14.0
-google-api-core==1.28.0
-proto-plus==1.4.0
+google-api-core==1.31.5
+proto-plus==1.15.0
diff --git a/tests/__init__.py b/tests/__init__.py
index 4de65971..e8e1c384 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/tests/unit/__init__.py b/tests/unit/__init__.py
index 4de65971..e8e1c384 100644
--- a/tests/unit/__init__.py
+++ b/tests/unit/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/tests/unit/gapic/__init__.py b/tests/unit/gapic/__init__.py
index 4de65971..e8e1c384 100644
--- a/tests/unit/gapic/__init__.py
+++ b/tests/unit/gapic/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/tests/unit/gapic/trace_v1/__init__.py b/tests/unit/gapic/trace_v1/__init__.py
index 4de65971..e8e1c384 100644
--- a/tests/unit/gapic/trace_v1/__init__.py
+++ b/tests/unit/gapic/trace_v1/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/tests/unit/gapic/trace_v1/test_trace_service.py b/tests/unit/gapic/trace_v1/test_trace_service.py
index 4ba61be8..6e5c0cea 100644
--- a/tests/unit/gapic/trace_v1/test_trace_service.py
+++ b/tests/unit/gapic/trace_v1/test_trace_service.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/tests/unit/gapic/trace_v2/__init__.py b/tests/unit/gapic/trace_v2/__init__.py
index 4de65971..e8e1c384 100644
--- a/tests/unit/gapic/trace_v2/__init__.py
+++ b/tests/unit/gapic/trace_v2/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/tests/unit/gapic/trace_v2/test_trace_service.py b/tests/unit/gapic/trace_v2/test_trace_service.py
index 22238433..50f125b8 100644
--- a/tests/unit/gapic/trace_v2/test_trace_service.py
+++ b/tests/unit/gapic/trace_v2/test_trace_service.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.