diff --git a/.flake8 b/.flake8
index 6eae7a38..e58504e6 100644
--- a/.flake8
+++ b/.flake8
@@ -1,3 +1,19 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 # Generated by synthtool. DO NOT EDIT!
 [flake8]
 ignore = E203, E266, E501, W503, F401, F821, F841, W291
diff --git a/.github/ISSUE_TEMPLATE/bug_report.md b/.github/ISSUE_TEMPLATE/bug_report.md
index e21c21c3..e6dfdf36 100644
--- a/.github/ISSUE_TEMPLATE/bug_report.md
+++ b/.github/ISSUE_TEMPLATE/bug_report.md
@@ -11,8 +11,7 @@ Thanks for stopping by to let us know something could be better!
 Please run down the following list and make sure you've tried the usual "quick fixes":
 
   - Search the issues already opened: https://github.com/googleapis/python-game-servers/issues
-  - Search the issues on our "catch-all" repository: https://github.com/googleapis/google-cloud-python
-  - Search StackOverflow: http://stackoverflow.com/questions/tagged/google-cloud-platform+python
+  - Search StackOverflow: https://stackoverflow.com/questions/tagged/google-cloud-platform+python
 
 If you are still having issues, please be sure to include as much information as possible:
 
diff --git a/.kokoro/publish-docs.sh b/.kokoro/publish-docs.sh
index b2e8c73f..456526bf 100755
--- a/.kokoro/publish-docs.sh
+++ b/.kokoro/publish-docs.sh
@@ -13,8 +13,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-#!/bin/bash
-
 set -eo pipefail
 
 # Disable buffering, so that the logs stream through.
diff --git a/.kokoro/release.sh b/.kokoro/release.sh
index 89772912..757d4794 100755
--- a/.kokoro/release.sh
+++ b/.kokoro/release.sh
@@ -13,8 +13,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-#!/bin/bash
-
 set -eo pipefail
 
 # Start the releasetool reporter
diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index d9122a05..b4d21d6b 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -22,7 +22,7 @@ In order to add a feature:
   documentation.
 
 - The feature must work fully on the following CPython versions:  2.7,
-  3.5, 3.6, and 3.7 on both UNIX and Windows.
+  3.5, 3.6, 3.7 and 3.8 on both UNIX and Windows.
 
 - The feature must not add unnecessary dependencies (where
   "unnecessary" is of course subjective, but new dependencies should
@@ -214,26 +214,18 @@ We support:
 -  `Python 3.5`_
 -  `Python 3.6`_
 -  `Python 3.7`_
+-  `Python 3.8`_
 
 .. _Python 3.5: https://docs.python.org/3.5/
 .. _Python 3.6: https://docs.python.org/3.6/
 .. _Python 3.7: https://docs.python.org/3.7/
+.. _Python 3.8: https://docs.python.org/3.8/
 
 
 Supported versions can be found in our ``noxfile.py`` `config`_.
 
 .. _config: https://github.com/googleapis/python-game-servers/blob/master/noxfile.py
 
-We explicitly decided not to support `Python 2.5`_ due to `decreased usage`_
-and lack of continuous integration `support`_.
-
-.. _Python 2.5: https://docs.python.org/2.5/
-.. _decreased usage: https://caremad.io/2013/10/a-look-at-pypi-downloads/
-.. _support: https://blog.travis-ci.com/2013-11-18-upcoming-build-environment-updates/
-
-We have `dropped 2.6`_ as a supported version as well since Python 2.6 is no
-longer supported by the core development team.
-
 Python 2.7 support is deprecated. All code changes should maintain Python 2.7 compatibility until January 1, 2020.
 
 We also explicitly decided to support Python 3 beginning with version
@@ -247,7 +239,6 @@ We also explicitly decided to support Python 3 beginning with version
 .. _prominent: https://docs.djangoproject.com/en/1.9/faq/install/#what-python-version-can-i-use-with-django
 .. _projects: http://flask.pocoo.org/docs/0.10/python3/
 .. _Unicode literal support: https://www.python.org/dev/peps/pep-0414/
-.. _dropped 2.6: https://github.com/googleapis/google-cloud-python/issues/995
 
 **********
 Versioning
diff --git a/MANIFEST.in b/MANIFEST.in
index cd011be2..68855abc 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,3 +1,19 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 # Generated by synthtool. DO NOT EDIT!
 include README.rst LICENSE
 recursive-include google *.json *.proto
diff --git a/docs/index.rst b/docs/index.rst
index 78fad860..b0cced1f 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -1,5 +1,7 @@
 .. include:: README.rst
 
+.. include:: multiprocessing.rst
+
 API Reference
 -------------
 .. toctree::
diff --git a/docs/multiprocessing.rst b/docs/multiprocessing.rst
new file mode 100644
index 00000000..1cb29d4c
--- /dev/null
+++ b/docs/multiprocessing.rst
@@ -0,0 +1,7 @@
+.. note::
+
+   Because this client uses :mod:`grpcio` library, it is safe to
+   share instances across threads. In multiprocessing scenarios, the best
+   practice is to create client instances *after* the invocation of
+   :func:`os.fork` by :class:`multiprocessing.Pool` or
+   :class:`multiprocessing.Process`.
diff --git a/noxfile.py b/noxfile.py
index 90899884..39c471a3 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -110,8 +110,7 @@ def system(session):
 
     # Install all test dependencies, then install this package into the
     # virtualenv's dist-packages.
-    session.install("mock", "pytest")
-
+    session.install("mock", "pytest", "google-cloud-testutils")
     session.install("-e", ".")
 
     # Run py.test against the system tests.
@@ -139,7 +138,7 @@ def docs(session):
     """Build the docs for this library."""
 
     session.install("-e", ".")
-    session.install("sphinx", "alabaster", "recommonmark")
+    session.install("sphinx<3.0.0", "alabaster", "recommonmark")
 
     shutil.rmtree(os.path.join("docs", "_build"), ignore_errors=True)
     session.run(
diff --git a/setup.cfg b/setup.cfg
index 3bd55550..c3a2b39f 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,3 +1,19 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 # Generated by synthtool. DO NOT EDIT!
 [bdist_wheel]
 universal = 1
diff --git a/synth.metadata b/synth.metadata
index 34de6caf..7f1e5c04 100644
--- a/synth.metadata
+++ b/synth.metadata
@@ -19,7 +19,7 @@
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "ee4330a0e5f4b93978e8683fbda8e6d4148326b7"
+        "sha": "274dd49554809834287c24b6dd324a85283f1182"
       }
     }
   ],