diff --git a/.librarian/generator-input/client-post-processing/pubsub-integration.yaml b/.librarian/generator-input/client-post-processing/pubsub-integration.yaml
index f71a623a4b8e..f91859f425ec 100644
--- a/.librarian/generator-input/client-post-processing/pubsub-integration.yaml
+++ b/.librarian/generator-input/client-post-processing/pubsub-integration.yaml
@@ -382,7 +382,7 @@ replacements:
       - "packages/google-cloud-pubsub/setup.py"
     before: '([ \t]+)("grpc-google-iam-v1.*",\n)\]\nextras = \{\}'
     after: |-
-      \g<1>\g<2>\g<1>"grpcio-status >= 1.44.0",
+      \g<1>\g<2>\g<1>"grpcio-status >= 1.51.3",
       \g<1>"opentelemetry-api >= 1.27.0",
       \g<1>"opentelemetry-sdk >= 1.27.0",
       ]
@@ -511,3 +511,27 @@ replacements:
       \g<1>"pubsub_v1/**",
       \g<1>"_build",
     count: 1
+
+  - paths:
+      - "packages/google-cloud-pubsub/testing/constraints-3.10.txt"
+    before: 'grpc-google-iam-v1==0\.14\.0\n(?!grpcio-status)'
+    after: |-
+      grpc-google-iam-v1==0.14.0
+      grpcio-status==1.51.3
+      opentelemetry-api==1.27.0
+      opentelemetry-sdk==1.27.0
+    count: 1
+
+  - paths:
+      - "packages/google-cloud-pubsub/testing/constraints-3.10.txt"
+    before: 'grpcio==1.44.0'
+    after: 'grpcio==1.51.3'
+    count: 1
+
+  - paths:
+      - "packages/google-cloud-pubsub/setup.py"
+    before: '"grpcio-status >= 1\.44\.0",'
+    after: '"grpcio-status >= 1.51.3",'
+    count: 1
+
+
diff --git a/librarian.yaml b/librarian.yaml
index 51c51b3ccc83..a93d463f50cd 100644
--- a/librarian.yaml
+++ b/librarian.yaml
@@ -1662,7 +1662,6 @@ libraries:
     version: 2.38.0
     apis:
       - path: google/pubsub/v1
-    skip_generate: true
     python:
       library_type: GAPIC_COMBO
       opt_args_by_api:
diff --git a/packages/google-cloud-pubsub/docs/conf.py b/packages/google-cloud-pubsub/docs/conf.py
index ad9bd9317be5..5655c8a097d0 100644
--- a/packages/google-cloud-pubsub/docs/conf.py
+++ b/packages/google-cloud-pubsub/docs/conf.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
+# Copyright 2026 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -83,7 +83,7 @@
 
 # General information about the project.
 project = "google-cloud-pubsub"
-copyright = "2025, Google, LLC"
+copyright = "2026, Google, LLC"
 author = "Google APIs"
 
 # The version info for the project you're documenting, acts as replacement for
diff --git a/packages/google-cloud-pubsub/google/pubsub_v1/__init__.py b/packages/google-cloud-pubsub/google/pubsub_v1/__init__.py
index 27f974a4070d..b766bd04eff7 100644
--- a/packages/google-cloud-pubsub/google/pubsub_v1/__init__.py
+++ b/packages/google-cloud-pubsub/google/pubsub_v1/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
+# Copyright 2026 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -21,13 +21,7 @@
 
 __version__ = package_version.__version__
 
-if sys.version_info >= (3, 8):  # pragma: NO COVER
-    from importlib import metadata
-else:  # pragma: NO COVER
-    # TODO(https://github.com/googleapis/python-api-core/issues/835): Remove
-    # this code path once we drop support for Python 3.7
-    import importlib_metadata as metadata
-
+from importlib import metadata
 
 from .services.publisher import PublisherAsyncClient, PublisherClient
 from .services.schema_service import SchemaServiceAsyncClient, SchemaServiceClient
@@ -116,28 +110,17 @@
     # An older version of api_core is installed which does not define the
     # functions above. We do equivalent checks manually.
     try:
-        import sys
         import warnings
 
         _py_version_str = sys.version.split()[0]
         _package_label = "google.pubsub_v1"
-        if sys.version_info < (3, 9):
+        if sys.version_info < (3, 10):
             warnings.warn(
                 "You are using a non-supported Python version "
                 + f"({_py_version_str}).  Google will not post any further "
                 + f"updates to {_package_label} supporting this Python version. "
                 + "Please upgrade to the latest Python version, or at "
-                + f"least to Python 3.9, and then update {_package_label}.",
-                FutureWarning,
-            )
-        if sys.version_info[:2] == (3, 9):
-            warnings.warn(
-                f"You are using a Python version ({_py_version_str}) "
-                + f"which Google will stop supporting in {_package_label} in "
-                + "January 2026. Please "
-                + "upgrade to the latest Python version, or at "
-                + "least to Python 3.10, before then, and "
-                + f"then update {_package_label}.",
+                + f"least to Python 3.10, and then update {_package_label}.",
                 FutureWarning,
             )
 
diff --git a/packages/google-cloud-pubsub/noxfile.py b/packages/google-cloud-pubsub/noxfile.py
index 0071c6b0f230..55b1085590cc 100644
--- a/packages/google-cloud-pubsub/noxfile.py
+++ b/packages/google-cloud-pubsub/noxfile.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
+# Copyright 2026 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -31,7 +31,6 @@
     LINT_PATHS.append("samples")
 
 ALL_PYTHON = [
-    "3.9",
     "3.10",
     "3.11",
     "3.12",
@@ -439,7 +438,6 @@ def docs(session):
     shutil.rmtree(os.path.join("docs", "_build"), ignore_errors=True)
     session.run(
         "sphinx-build",
-        "-W",  # warnings as errors
         "-T",  # show full traceback on exception
         "-N",  # no colors
         "-b",
diff --git a/packages/google-cloud-pubsub/setup.py b/packages/google-cloud-pubsub/setup.py
index e15ae204c9ae..be01fa27e926 100644
--- a/packages/google-cloud-pubsub/setup.py
+++ b/packages/google-cloud-pubsub/setup.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
+# Copyright 2026 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -39,7 +39,7 @@
     release_status = "Development Status :: 5 - Production/Stable"
 
 dependencies = [
-    "google-api-core[grpc] >= 2.11.0, <3.0.0",
+    "google-api-core[grpc] >= 2.17.1, <3.0.0",
     # Exclude incompatible versions of `google-auth`
     # See https://github.com/googleapis/google-cloud-python/issues/12364
     "google-auth >= 2.14.1, <3.0.0,!=2.24.0,!=2.25.0",
@@ -48,7 +48,7 @@
     "proto-plus >= 1.25.0, <2.0.0; python_version >= '3.13'",
     "protobuf >= 4.25.8, < 8.0.0",
     "grpc-google-iam-v1 >= 0.14.0, <1.0.0",
-    "grpcio-status >= 1.33.2",
+    "grpcio-status >= 1.51.3",
     "opentelemetry-api >= 1.27.0",
     "opentelemetry-sdk >= 1.27.0",
 ]
@@ -74,7 +74,7 @@
     long_description=readme,
     author="Google LLC",
     author_email="googleapis-packages@google.com",
-    license="Apache 2.0",
+    license="Apache-2.0",
     url=url,
     classifiers=[
         release_status,
@@ -82,7 +82,6 @@
         "License :: OSI Approved :: Apache Software License",
         "Programming Language :: Python",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
@@ -93,7 +92,7 @@
     ],
     platforms="Posix; MacOS X; Windows",
     packages=packages,
-    python_requires=">=3.9",
+    python_requires=">=3.10",
     install_requires=dependencies,
     extras_require=extras,
     include_package_data=True,
diff --git a/packages/google-cloud-pubsub/testing/constraints-3.10.txt b/packages/google-cloud-pubsub/testing/constraints-3.10.txt
index 1cd0c5a2c3d4..aa2a4f1e90a4 100644
--- a/packages/google-cloud-pubsub/testing/constraints-3.10.txt
+++ b/packages/google-cloud-pubsub/testing/constraints-3.10.txt
@@ -1,11 +1,15 @@
-# -*- coding: utf-8 -*-
-# This constraints file is required for unit tests.
-# List all library dependencies and extras in this file.
-google-api-core
-google-auth
-grpcio
-proto-plus
-protobuf
-# cryptography is a direct dependency of google-auth
-cryptography
-grpc-google-iam-v1
+# This constraints file is used to check that lower bounds
+# are correct in setup.py
+# List all library dependencies and extras in this file,
+# pinning their versions to their lower bounds.
+# For example, if setup.py has "google-cloud-foo >= 1.14.0, < 2.0.0",
+# then this file should have google-cloud-foo==1.14.0
+google-api-core==2.17.1
+google-auth==2.14.1
+grpcio==1.51.3
+proto-plus==1.22.3
+protobuf==4.25.8
+grpc-google-iam-v1==0.14.0
+grpcio-status==1.51.3
+opentelemetry-api==1.27.0
+opentelemetry-sdk==1.27.0
\ No newline at end of file
diff --git a/packages/google-cloud-pubsub/testing/constraints-3.9.txt b/packages/google-cloud-pubsub/testing/constraints-3.9.txt
deleted file mode 100644
index dcb9a9b3d8ed..000000000000
--- a/packages/google-cloud-pubsub/testing/constraints-3.9.txt
+++ /dev/null
@@ -1,14 +0,0 @@
-# -*- coding: utf-8 -*-
-# This constraints file is used to check that lower bounds
-# are correct in setup.py
-# List all library dependencies and extras in this file,
-# pinning their versions to their lower bounds.
-# For example, if setup.py has "google-cloud-foo >= 1.14.0, < 2.0.0",
-# then this file should have google-cloud-foo==1.14.0
-google-api-core==2.21.0
-google-auth==2.35.0
-# TODO(https://github.com/googleapis/gapic-generator-python/issues/2453)
-# Add the minimum supported version of grpcio to constraints files
-proto-plus==1.22.3
-protobuf==4.25.8
-grpc-google-iam-v1==0.14.0
diff --git a/packages/google-cloud-pubsub/tests/unit/gapic/pubsub_v1/test_publisher.py b/packages/google-cloud-pubsub/tests/unit/gapic/pubsub_v1/test_publisher.py
index 372555526f1f..6cdb9c081b3f 100644
--- a/packages/google-cloud-pubsub/tests/unit/gapic/pubsub_v1/test_publisher.py
+++ b/packages/google-cloud-pubsub/tests/unit/gapic/pubsub_v1/test_publisher.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
+# Copyright 2026 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,18 +13,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-import os
-
-# try/except added for compatibility with python < 3.8
-try:
-    from unittest import mock
-    from unittest.mock import AsyncMock  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    import mock
-
 import json
 import math
+import os
 from collections.abc import AsyncIterable, Iterable, Mapping, Sequence
+from unittest import mock
+from unittest.mock import AsyncMock
 
 import grpc
 import pytest
@@ -3120,11 +3114,7 @@ async def test_list_topics_async_pages():
             RuntimeError,
         )
         pages = []
-        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
-        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
-        async for page_ in (  # pragma: no branch
-            await client.list_topics(request={})
-        ).pages:
+        async for page_ in (await client.list_topics(request={})).pages:
             pages.append(page_)
         for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
             assert page_.raw_page.next_page_token == token
@@ -3672,11 +3662,7 @@ async def test_list_topic_subscriptions_async_pages():
             RuntimeError,
         )
         pages = []
-        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
-        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
-        async for page_ in (  # pragma: no branch
-            await client.list_topic_subscriptions(request={})
-        ).pages:
+        async for page_ in (await client.list_topic_subscriptions(request={})).pages:
             pages.append(page_)
         for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
             assert page_.raw_page.next_page_token == token
@@ -4221,11 +4207,7 @@ async def test_list_topic_snapshots_async_pages():
             RuntimeError,
         )
         pages = []
-        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
-        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
-        async for page_ in (  # pragma: no branch
-            await client.list_topic_snapshots(request={})
-        ).pages:
+        async for page_ in (await client.list_topic_snapshots(request={})).pages:
             pages.append(page_)
         for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
             assert page_.raw_page.next_page_token == token
@@ -4898,7 +4880,7 @@ def test_create_topic_rest_required_fields(request_type=pubsub.Topic):
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_create_topic_rest_unset_required_fields():
@@ -5068,7 +5050,7 @@ def test_update_topic_rest_required_fields(request_type=pubsub.UpdateTopicReques
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_update_topic_rest_unset_required_fields():
@@ -5253,7 +5235,7 @@ def test_publish_rest_required_fields(request_type=pubsub.PublishRequest):
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_publish_rest_unset_required_fields():
@@ -5438,7 +5420,7 @@ def test_get_topic_rest_required_fields(request_type=pubsub.GetTopicRequest):
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_get_topic_rest_unset_required_fields():
@@ -5619,7 +5601,7 @@ def test_list_topics_rest_required_fields(request_type=pubsub.ListTopicsRequest)
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_list_topics_rest_unset_required_fields():
@@ -5876,7 +5858,7 @@ def test_list_topic_subscriptions_rest_required_fields(
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_list_topic_subscriptions_rest_unset_required_fields():
@@ -6135,7 +6117,7 @@ def test_list_topic_snapshots_rest_required_fields(
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_list_topic_snapshots_rest_unset_required_fields():
@@ -6376,7 +6358,7 @@ def test_delete_topic_rest_required_fields(request_type=pubsub.DeleteTopicReques
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_delete_topic_rest_unset_required_fields():
@@ -6554,7 +6536,7 @@ def test_detach_subscription_rest_required_fields(
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_detach_subscription_rest_unset_required_fields():
diff --git a/packages/google-cloud-pubsub/tests/unit/gapic/pubsub_v1/test_schema_service.py b/packages/google-cloud-pubsub/tests/unit/gapic/pubsub_v1/test_schema_service.py
index 3c3786070158..59323f8b1adf 100644
--- a/packages/google-cloud-pubsub/tests/unit/gapic/pubsub_v1/test_schema_service.py
+++ b/packages/google-cloud-pubsub/tests/unit/gapic/pubsub_v1/test_schema_service.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
+# Copyright 2026 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,18 +13,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-import os
-
-# try/except added for compatibility with python < 3.8
-try:
-    from unittest import mock
-    from unittest.mock import AsyncMock  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    import mock
-
 import json
 import math
+import os
 from collections.abc import AsyncIterable, Iterable, Mapping, Sequence
+from unittest import mock
+from unittest.mock import AsyncMock
 
 import grpc
 import pytest
@@ -2512,11 +2506,7 @@ async def test_list_schemas_async_pages():
             RuntimeError,
         )
         pages = []
-        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
-        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
-        async for page_ in (  # pragma: no branch
-            await client.list_schemas(request={})
-        ).pages:
+        async for page_ in (await client.list_schemas(request={})).pages:
             pages.append(page_)
         for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
             assert page_.raw_page.next_page_token == token
@@ -3058,11 +3048,7 @@ async def test_list_schema_revisions_async_pages():
             RuntimeError,
         )
         pages = []
-        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
-        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
-        async for page_ in (  # pragma: no branch
-            await client.list_schema_revisions(request={})
-        ).pages:
+        async for page_ in (await client.list_schema_revisions(request={})).pages:
             pages.append(page_)
         for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
             assert page_.raw_page.next_page_token == token
@@ -5100,7 +5086,7 @@ def test_create_schema_rest_required_fields(request_type=gp_schema.CreateSchemaR
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_create_schema_rest_unset_required_fields():
@@ -5288,7 +5274,7 @@ def test_get_schema_rest_required_fields(request_type=schema.GetSchemaRequest):
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_get_schema_rest_unset_required_fields():
@@ -5470,7 +5456,7 @@ def test_list_schemas_rest_required_fields(request_type=schema.ListSchemasReques
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_list_schemas_rest_unset_required_fields():
@@ -5729,7 +5715,7 @@ def test_list_schema_revisions_rest_required_fields(
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_list_schema_revisions_rest_unset_required_fields():
@@ -5977,7 +5963,7 @@ def test_commit_schema_rest_required_fields(request_type=gp_schema.CommitSchemaR
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_commit_schema_rest_unset_required_fields():
@@ -6168,7 +6154,7 @@ def test_rollback_schema_rest_required_fields(
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_rollback_schema_rest_unset_required_fields():
@@ -6362,7 +6348,7 @@ def test_delete_schema_revision_rest_required_fields(
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_delete_schema_revision_rest_unset_required_fields():
@@ -6536,7 +6522,7 @@ def test_delete_schema_rest_required_fields(request_type=schema.DeleteSchemaRequ
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_delete_schema_rest_unset_required_fields():
@@ -6711,7 +6697,7 @@ def test_validate_schema_rest_required_fields(
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_validate_schema_rest_unset_required_fields():
@@ -6901,7 +6887,7 @@ def test_validate_message_rest_required_fields(
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_validate_message_rest_unset_required_fields():
diff --git a/packages/google-cloud-pubsub/tests/unit/gapic/pubsub_v1/test_subscriber.py b/packages/google-cloud-pubsub/tests/unit/gapic/pubsub_v1/test_subscriber.py
index 2368c649c2f0..ca250e0b68c4 100644
--- a/packages/google-cloud-pubsub/tests/unit/gapic/pubsub_v1/test_subscriber.py
+++ b/packages/google-cloud-pubsub/tests/unit/gapic/pubsub_v1/test_subscriber.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2025 Google LLC
+# Copyright 2026 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,18 +13,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-import os
-
-# try/except added for compatibility with python < 3.8
-try:
-    from unittest import mock
-    from unittest.mock import AsyncMock  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    import mock
-
 import json
 import math
+import os
 from collections.abc import AsyncIterable, Iterable, Mapping, Sequence
+from unittest import mock
+from unittest.mock import AsyncMock
 
 import grpc
 import pytest
@@ -2951,11 +2945,7 @@ async def test_list_subscriptions_async_pages():
             RuntimeError,
         )
         pages = []
-        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
-        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
-        async for page_ in (  # pragma: no branch
-            await client.list_subscriptions(request={})
-        ).pages:
+        async for page_ in (await client.list_subscriptions(request={})).pages:
             pages.append(page_)
         for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
             assert page_.raw_page.next_page_token == token
@@ -5608,11 +5598,7 @@ async def test_list_snapshots_async_pages():
             RuntimeError,
         )
         pages = []
-        # Workaround issue in python 3.9 related to code coverage by adding `# pragma: no branch`
-        # See https://github.com/googleapis/gapic-generator-python/pull/1174#issuecomment-1025132372
-        async for page_ in (  # pragma: no branch
-            await client.list_snapshots(request={})
-        ).pages:
+        async for page_ in (await client.list_snapshots(request={})).pages:
             pages.append(page_)
         for page_, token in zip(pages, ["abc", "def", "ghi", ""]):
             assert page_.raw_page.next_page_token == token
@@ -6938,7 +6924,7 @@ def test_create_subscription_rest_required_fields(request_type=pubsub.Subscripti
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_create_subscription_rest_unset_required_fields():
@@ -7130,7 +7116,7 @@ def test_get_subscription_rest_required_fields(
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_get_subscription_rest_unset_required_fields():
@@ -7307,7 +7293,7 @@ def test_update_subscription_rest_required_fields(
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_update_subscription_rest_unset_required_fields():
@@ -7508,7 +7494,7 @@ def test_list_subscriptions_rest_required_fields(
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_list_subscriptions_rest_unset_required_fields():
@@ -7754,7 +7740,7 @@ def test_delete_subscription_rest_required_fields(
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_delete_subscription_rest_unset_required_fields():
@@ -7939,7 +7925,7 @@ def test_modify_ack_deadline_rest_required_fields(
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_modify_ack_deadline_rest_unset_required_fields():
@@ -8128,7 +8114,7 @@ def test_acknowledge_rest_required_fields(request_type=pubsub.AcknowledgeRequest
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_acknowledge_rest_unset_required_fields():
@@ -8317,7 +8303,7 @@ def test_pull_rest_required_fields(request_type=pubsub.PullRequest):
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_pull_rest_unset_required_fields():
@@ -8520,7 +8506,7 @@ def test_modify_push_config_rest_required_fields(
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_modify_push_config_rest_unset_required_fields():
@@ -8704,7 +8690,7 @@ def test_get_snapshot_rest_required_fields(request_type=pubsub.GetSnapshotReques
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_get_snapshot_rest_unset_required_fields():
@@ -8885,7 +8871,7 @@ def test_list_snapshots_rest_required_fields(request_type=pubsub.ListSnapshotsRe
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_list_snapshots_rest_unset_required_fields():
@@ -9135,7 +9121,7 @@ def test_create_snapshot_rest_required_fields(
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_create_snapshot_rest_unset_required_fields():
@@ -9317,7 +9303,7 @@ def test_update_snapshot_rest_required_fields(
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_update_snapshot_rest_unset_required_fields():
@@ -9501,7 +9487,7 @@ def test_delete_snapshot_rest_required_fields(
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_delete_snapshot_rest_unset_required_fields():
@@ -9674,7 +9660,7 @@ def test_seek_rest_required_fields(request_type=pubsub.SeekRequest):
 
             expected_params = [("$alt", "json;enum-encoding=int")]
             actual_params = req.call_args.kwargs["params"]
-            assert expected_params == actual_params
+            assert sorted(expected_params) == sorted(actual_params)
 
 
 def test_seek_rest_unset_required_fields():