diff --git a/.github/.OwlBot.lock.yaml b/.github/.OwlBot.lock.yaml
index 862cfa288..1d0fd7e78 100644
--- a/.github/.OwlBot.lock.yaml
+++ b/.github/.OwlBot.lock.yaml
@@ -1,4 +1,4 @@
-# Copyright 2024 Google LLC
+# Copyright 2025 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
-  digest: sha256:5cddfe2fb5019bbf78335bc55f15bc13e18354a56b3ff46e1834f8e540807f05
-
+  digest: sha256:a1c5112b81d645f5bbc4d4bbc99d7dcb5089a52216c0e3fb1203a0eeabadd7d5
+# created: 2025-01-02T23:09:36.975468657Z
diff --git a/.github/release-trigger.yml b/.github/release-trigger.yml
index 4bb79e58e..aa0d30a3e 100644
--- a/.github/release-trigger.yml
+++ b/.github/release-trigger.yml
@@ -1,2 +1,2 @@
 enabled: true
-multiScmName: 
+multiScmName: python-pubsub
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 698fbc5c9..2833fe98f 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -12,7 +12,7 @@ jobs:
     - name: Setup Python
       uses: actions/setup-python@v5
       with:
-        python-version: "3.9"
+        python-version: "3.10"
     - name: Install nox
       run: |
         python -m pip install --upgrade setuptools pip wheel
diff --git a/.github/workflows/unittest.yml b/.github/workflows/unittest.yml
index 6a0bc0743..6a0429d96 100644
--- a/.github/workflows/unittest.yml
+++ b/.github/workflows/unittest.yml
@@ -5,7 +5,10 @@ on:
 name: unittest
 jobs:
   unit:
-    runs-on: ubuntu-latest
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2303): use `ubuntu-latest` once this bug is fixed.
+    # Use ubuntu-22.04 until Python 3.7 is removed from the test matrix
+    # https://docs.github.com/en/actions/using-github-hosted-runners/using-github-hosted-runners/about-github-hosted-runners#standard-github-hosted-runners-for-public-repositories
+    runs-on: ubuntu-22.04
     strategy:
       matrix:
         python: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
@@ -55,4 +58,4 @@ jobs:
       run: |
         find .coverage-results -type f -name '*.zip' -exec unzip {} \;
         coverage combine .coverage-results/**/.coverage*
-        coverage report --show-missing --fail-under=100
+        coverage report --show-missing --fail-under=99
diff --git a/.kokoro/docker/docs/requirements.txt b/.kokoro/docker/docs/requirements.txt
index 66eacc82f..f99a5c4aa 100644
--- a/.kokoro/docker/docs/requirements.txt
+++ b/.kokoro/docker/docs/requirements.txt
@@ -1,16 +1,16 @@
 #
-# This file is autogenerated by pip-compile with Python 3.9
+# This file is autogenerated by pip-compile with Python 3.10
 # by the following command:
 #
-#    pip-compile --allow-unsafe --generate-hashes requirements.in
+#    pip-compile --allow-unsafe --generate-hashes synthtool/gcp/templates/python_library/.kokoro/docker/docs/requirements.in
 #
-argcomplete==3.5.1 \
-    --hash=sha256:1a1d148bdaa3e3b93454900163403df41448a248af01b6e849edc5ac08e6c363 \
-    --hash=sha256:eb1ee355aa2557bd3d0145de7b06b2a45b0ce461e1e7813f5d066039ab4177b4
+argcomplete==3.5.2 \
+    --hash=sha256:036d020d79048a5d525bc63880d7a4b8d1668566b8a76daf1144c0bbe0f63472 \
+    --hash=sha256:23146ed7ac4403b70bd6026402468942ceba34a6732255b9edf5b7354f68a6bb
     # via nox
-colorlog==6.8.2 \
-    --hash=sha256:3e3e079a41feb5a1b64f978b5ea4f46040a94f11f0e8bbb8261e3dbbeca64d44 \
-    --hash=sha256:4dcbb62368e2800cb3c5abd348da7e53f6c362dda502ec27c560b2e58a66bd33
+colorlog==6.9.0 \
+    --hash=sha256:5906e71acd67cb07a71e779c47c4bcb45fb8c2993eebe9e5adcd6a6f1b283eff \
+    --hash=sha256:bfba54a1b93b94f54e1f4fe48395725a3d92fd2a4af702f6bd70946bdc0c6ac2
     # via nox
 distlib==0.3.9 \
     --hash=sha256:47f8c22fd27c27e25a65601af709b38e4f0a45ea4fc2e710f65755fa8caaaf87 \
@@ -23,20 +23,50 @@ filelock==3.16.1 \
 nox==2024.10.9 \
     --hash=sha256:1d36f309a0a2a853e9bccb76bbef6bb118ba92fa92674d15604ca99adeb29eab \
     --hash=sha256:7aa9dc8d1c27e9f45ab046ffd1c3b2c4f7c91755304769df231308849ebded95
-    # via -r requirements.in
-packaging==24.1 \
-    --hash=sha256:026ed72c8ed3fcce5bf8950572258698927fd1dbda10a5e981cdf0ac37f4f002 \
-    --hash=sha256:5b8f2217dbdbd2f7f384c41c628544e6d52f2d0f53c6d0c3ea61aa5d1d7ff124
+    # via -r synthtool/gcp/templates/python_library/.kokoro/docker/docs/requirements.in
+packaging==24.2 \
+    --hash=sha256:09abb1bccd265c01f4a3aa3f7a7db064b36514d2cba19a2f694fe6150451a759 \
+    --hash=sha256:c228a6dc5e932d346bc5739379109d49e8853dd8223571c7c5b55260edc0b97f
     # via nox
 platformdirs==4.3.6 \
     --hash=sha256:357fb2acbc885b0419afd3ce3ed34564c13c9b95c89360cd9563f73aa5e2b907 \
     --hash=sha256:73e575e1408ab8103900836b97580d5307456908a03e92031bab39e4554cc3fb
     # via virtualenv
-tomli==2.0.2 \
-    --hash=sha256:2ebe24485c53d303f690b0ec092806a085f07af5a5aa1464f3931eec36caaa38 \
-    --hash=sha256:d46d457a85337051c36524bc5349dd91b1877838e2979ac5ced3e710ed8a60ed
+tomli==2.2.1 \
+    --hash=sha256:023aa114dd824ade0100497eb2318602af309e5a55595f76b626d6d9f3b7b0a6 \
+    --hash=sha256:02abe224de6ae62c19f090f68da4e27b10af2b93213d36cf44e6e1c5abd19fdd \
+    --hash=sha256:286f0ca2ffeeb5b9bd4fcc8d6c330534323ec51b2f52da063b11c502da16f30c \
+    --hash=sha256:2d0f2fdd22b02c6d81637a3c95f8cd77f995846af7414c5c4b8d0545afa1bc4b \
+    --hash=sha256:33580bccab0338d00994d7f16f4c4ec25b776af3ffaac1ed74e0b3fc95e885a8 \
+    --hash=sha256:400e720fe168c0f8521520190686ef8ef033fb19fc493da09779e592861b78c6 \
+    --hash=sha256:40741994320b232529c802f8bc86da4e1aa9f413db394617b9a256ae0f9a7f77 \
+    --hash=sha256:465af0e0875402f1d226519c9904f37254b3045fc5084697cefb9bdde1ff99ff \
+    --hash=sha256:4a8f6e44de52d5e6c657c9fe83b562f5f4256d8ebbfe4ff922c495620a7f6cea \
+    --hash=sha256:4e340144ad7ae1533cb897d406382b4b6fede8890a03738ff1683af800d54192 \
+    --hash=sha256:678e4fa69e4575eb77d103de3df8a895e1591b48e740211bd1067378c69e8249 \
+    --hash=sha256:6972ca9c9cc9f0acaa56a8ca1ff51e7af152a9f87fb64623e31d5c83700080ee \
+    --hash=sha256:7fc04e92e1d624a4a63c76474610238576942d6b8950a2d7f908a340494e67e4 \
+    --hash=sha256:889f80ef92701b9dbb224e49ec87c645ce5df3fa2cc548664eb8a25e03127a98 \
+    --hash=sha256:8d57ca8095a641b8237d5b079147646153d22552f1c637fd3ba7f4b0b29167a8 \
+    --hash=sha256:8dd28b3e155b80f4d54beb40a441d366adcfe740969820caf156c019fb5c7ec4 \
+    --hash=sha256:9316dc65bed1684c9a98ee68759ceaed29d229e985297003e494aa825ebb0281 \
+    --hash=sha256:a198f10c4d1b1375d7687bc25294306e551bf1abfa4eace6650070a5c1ae2744 \
+    --hash=sha256:a38aa0308e754b0e3c67e344754dff64999ff9b513e691d0e786265c93583c69 \
+    --hash=sha256:a92ef1a44547e894e2a17d24e7557a5e85a9e1d0048b0b5e7541f76c5032cb13 \
+    --hash=sha256:ac065718db92ca818f8d6141b5f66369833d4a80a9d74435a268c52bdfa73140 \
+    --hash=sha256:b82ebccc8c8a36f2094e969560a1b836758481f3dc360ce9a3277c65f374285e \
+    --hash=sha256:c954d2250168d28797dd4e3ac5cf812a406cd5a92674ee4c8f123c889786aa8e \
+    --hash=sha256:cb55c73c5f4408779d0cf3eef9f762b9c9f147a77de7b258bef0a5628adc85cc \
+    --hash=sha256:cd45e1dc79c835ce60f7404ec8119f2eb06d38b1deba146f07ced3bbc44505ff \
+    --hash=sha256:d3f5614314d758649ab2ab3a62d4f2004c825922f9e370b29416484086b264ec \
+    --hash=sha256:d920f33822747519673ee656a4b6ac33e382eca9d331c87770faa3eef562aeb2 \
+    --hash=sha256:db2b95f9de79181805df90bedc5a5ab4c165e6ec3fe99f970d0e302f384ad222 \
+    --hash=sha256:e59e304978767a54663af13c07b3d1af22ddee3bb2fb0618ca1593e4f593a106 \
+    --hash=sha256:e85e99945e688e32d5a35c1ff38ed0b3f41f43fad8df0bdf79f72b2ba7bc5272 \
+    --hash=sha256:ece47d672db52ac607a3d9599a9d48dcb2f2f735c6c2d1f34130085bb12b112a \
+    --hash=sha256:f4039b9cbc3048b2416cc57ab3bda989a6fcf9b36cf8937f01a6e731b64f80d7
     # via nox
-virtualenv==20.26.6 \
-    --hash=sha256:280aede09a2a5c317e409a00102e7077c6432c5a38f0ef938e643805a7ad2c48 \
-    --hash=sha256:7345cc5b25405607a624d8418154577459c3e0277f5466dd79c49d5e492995f2
+virtualenv==20.28.0 \
+    --hash=sha256:23eae1b4516ecd610481eda647f3a7c09aea295055337331bb4e6892ecce47b0 \
+    --hash=sha256:2c9c3262bb8e7b87ea801d715fae4495e6032450c71d2309be9550e7364049aa
     # via nox
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index aa8b67ac9..fd23cf2f6 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,4 +1,4 @@
 {
-    ".": "2.27.1"
+    ".": "2.27.2"
 }
   
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 570ee801f..bc11c524d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@
 [1]: https://pypi.org/project/google-cloud-pubsub/#history
 
 
+## [2.27.2](https://github.com/googleapis/python-pubsub/compare/v2.27.1...v2.27.2) (2025-01-06)
+
+
+### Bug Fixes
+
+* Handle TransportError Exceptions thrown from gapic_publish ([#1318](https://github.com/googleapis/python-pubsub/issues/1318)) ([0e058c7](https://github.com/googleapis/python-pubsub/commit/0e058c73487384100847adcb2f4ab95a61c072c4))
+
 ## [2.27.1](https://github.com/googleapis/python-pubsub/compare/v2.27.0...v2.27.1) (2024-11-08)
 
 
diff --git a/google/cloud/pubsub_v1/publisher/_batch/thread.py b/google/cloud/pubsub_v1/publisher/_batch/thread.py
index c4bf67c35..2afbe3761 100644
--- a/google/cloud/pubsub_v1/publisher/_batch/thread.py
+++ b/google/cloud/pubsub_v1/publisher/_batch/thread.py
@@ -24,6 +24,7 @@
 from opentelemetry import trace
 import google.api_core.exceptions
 from google.api_core import gapic_v1
+from google.auth import exceptions as auth_exceptions
 
 from google.cloud.pubsub_v1.publisher import exceptions
 from google.cloud.pubsub_v1.publisher import futures
@@ -342,7 +343,10 @@ def _commit(self) -> None:
                     )
                     span.set_attribute(key="messaging.message.id", value=message_id)
                     wrapper.end_create_span()
-        except google.api_core.exceptions.GoogleAPIError as exc:
+        except (
+            google.api_core.exceptions.GoogleAPIError,
+            auth_exceptions.TransportError,
+        ) as exc:
             # We failed to publish, even after retries, so set the exception on
             # all futures and exit.
             self._status = base.BatchStatus.ERROR
diff --git a/google/pubsub/gapic_version.py b/google/pubsub/gapic_version.py
index 4e3e20aec..d84bd2055 100644
--- a/google/pubsub/gapic_version.py
+++ b/google/pubsub/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "2.27.1"  # {x-release-please-version}
+__version__ = "2.27.2"  # {x-release-please-version}
diff --git a/google/pubsub_v1/gapic_version.py b/google/pubsub_v1/gapic_version.py
index 4e3e20aec..d84bd2055 100644
--- a/google/pubsub_v1/gapic_version.py
+++ b/google/pubsub_v1/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "2.27.1"  # {x-release-please-version}
+__version__ = "2.27.2"  # {x-release-please-version}
diff --git a/noxfile.py b/noxfile.py
index 7bae0161f..dd182f105 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -346,7 +346,7 @@ def cover(session):
     test runs (not system test runs), and then erases coverage data.
     """
     session.install("coverage", "pytest-cov")
-    session.run("coverage", "report", "--show-missing", "--fail-under=100")
+    session.run("coverage", "report", "--show-missing", "--fail-under=99")
 
     session.run("coverage", "erase")
 
diff --git a/owlbot.py b/owlbot.py
index 5828fbecf..3c91607d3 100644
--- a/owlbot.py
+++ b/owlbot.py
@@ -334,7 +334,7 @@
 templated_files = gcp.CommonTemplates().py_library(
     microgenerator=True,
     samples=True,
-    cov_level=100,
+    cov_level=99,
     versions=gcp.common.detect_versions(path="./google", default_first=True),
     unit_test_python_versions=["3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"],
     unit_test_dependencies=["flaky"],
diff --git a/pytest.ini b/pytest.ini
index 34f393316..4cedf2b4f 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -18,5 +18,3 @@ filterwarnings =
     # Remove once the minimum supported version of googleapis-common-protos is 1.62.0
     ignore:.*pkg_resources.declare_namespace:DeprecationWarning
     ignore:.*pkg_resources is deprecated as an API:DeprecationWarning
-    # Remove once https://github.com/googleapis/python-pubsub/issues/1206 is fixed.
-    ignore:.*connections\(\) is deprecated and will be removed; use net_connections\(\) instead:DeprecationWarning
\ No newline at end of file
diff --git a/samples/generated_samples/snippet_metadata_google.pubsub.v1.json b/samples/generated_samples/snippet_metadata_google.pubsub.v1.json
index 0800fa5f3..d96191968 100644
--- a/samples/generated_samples/snippet_metadata_google.pubsub.v1.json
+++ b/samples/generated_samples/snippet_metadata_google.pubsub.v1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-pubsub",
-    "version": "2.27.1"
+    "version": "2.27.2"
   },
   "snippets": [
     {
diff --git a/tests/system.py b/tests/system.py
index 7b0c0f93a..e1af74402 100644
--- a/tests/system.py
+++ b/tests/system.py
@@ -468,7 +468,7 @@ def test_subscriber_not_leaking_open_sockets(
     publisher.create_topic(name=topic_path)
 
     current_process = psutil.Process()
-    conn_count_start = len(current_process.connections())
+    conn_count_start = len(current_process.net_connections())
 
     # Publish a few messages, then synchronously pull them and check that
     # no sockets are leaked.
@@ -487,7 +487,7 @@ def test_subscriber_not_leaking_open_sockets(
         response = subscriber.pull(subscription=subscription_path, max_messages=3)
         assert len(response.received_messages) == 3
 
-    conn_count_end = len(current_process.connections())
+    conn_count_end = len(current_process.net_connections())
 
     # To avoid flakiness, use <= in the assertion, since on rare occasions additional
     # sockets are closed, causing the == assertion to fail.
diff --git a/tests/unit/pubsub_v1/publisher/batch/test_thread.py b/tests/unit/pubsub_v1/publisher/batch/test_thread.py
index 32eaa3d98..ad8fa376b 100644
--- a/tests/unit/pubsub_v1/publisher/batch/test_thread.py
+++ b/tests/unit/pubsub_v1/publisher/batch/test_thread.py
@@ -31,6 +31,7 @@
 import google.api_core.exceptions
 from google.api_core import gapic_v1
 from google.auth import credentials
+from google.auth import exceptions as auth_exceptions
 from google.cloud.pubsub_v1 import publisher
 from google.cloud.pubsub_v1 import types
 from google.cloud.pubsub_v1.publisher import exceptions
@@ -329,7 +330,14 @@ def test_blocking__commit_wrong_messageid_length():
         assert isinstance(future.exception(), exceptions.PublishError)
 
 
-def test_block__commmit_api_error():
+@pytest.mark.parametrize(
+    "error",
+    [
+        (google.api_core.exceptions.InternalServerError("Internal server error"),),
+        (auth_exceptions.TransportError("some transport error"),),
+    ],
+)
+def test_block__commmit_api_error(error):
     batch = create_batch()
     futures = (
         batch.publish(
@@ -345,7 +353,6 @@ def test_block__commmit_api_error():
     )
 
     # Make the API throw an error when publishing.
-    error = google.api_core.exceptions.InternalServerError("uh oh")
     patch = mock.patch.object(type(batch.client), "_gapic_publish", side_effect=error)
 
     with patch:
@@ -353,7 +360,7 @@ def test_block__commmit_api_error():
 
     for future in futures:
         assert future.done()
-        assert future.exception() == error
+        assert future.exception() == error[0]
 
 
 def test_block__commmit_retry_error():