diff --git a/synthtool/gcp/templates/python_library/.pre-commit-config.yaml b/synthtool/gcp/templates/python_library/.pre-commit-config.yaml
index 19409cbd3..6a8e16950 100644
--- a/synthtool/gcp/templates/python_library/.pre-commit-config.yaml
+++ b/synthtool/gcp/templates/python_library/.pre-commit-config.yaml
@@ -22,7 +22,7 @@ repos:
     -   id: end-of-file-fixer
     -   id: check-yaml
 -   repo: https://github.com/psf/black
-    rev: 22.3.0
+    rev: 23.7.0
     hooks:
     - id: black
 -   repo: https://github.com/pycqa/flake8
diff --git a/synthtool/gcp/templates/python_library/noxfile.py.j2 b/synthtool/gcp/templates/python_library/noxfile.py.j2
index 40651e382..5db859fa4 100644
--- a/synthtool/gcp/templates/python_library/noxfile.py.j2
+++ b/synthtool/gcp/templates/python_library/noxfile.py.j2
@@ -17,22 +17,24 @@
 # Generated by synthtool. DO NOT EDIT!
 
 from __future__ import absolute_import
+
 import os
 import pathlib
 import re
 import shutil
+from typing import Dict, List
 import warnings
 
 import nox
 
 FLAKE8_VERSION = "flake8==6.1.0"
-BLACK_VERSION = "black==22.3.0"
-ISORT_VERSION = "isort==5.10.1"
+BLACK_VERSION = "black[jupyter]==23.7.0"
+ISORT_VERSION = "isort==5.11.0"
 LINT_PATHS = ["docs", "google", "tests", "noxfile.py", "setup.py"]
 
 DEFAULT_PYTHON_VERSION = "{{ default_python_version }}"
 
-UNIT_TEST_PYTHON_VERSIONS = [{% for v in unit_test_python_versions %}"{{v}}"{% if not loop.last %}, {% endif %}{% endfor %}]
+UNIT_TEST_PYTHON_VERSIONS: List[str] = [{% for v in unit_test_python_versions %}"{{v}}"{% if not loop.last %}, {% endif %}{% endfor %}]
 UNIT_TEST_STANDARD_DEPENDENCIES = [
     "mock",
     "asyncmock",
@@ -41,89 +43,89 @@ UNIT_TEST_STANDARD_DEPENDENCIES = [
     "pytest-asyncio",
 ]
 {%- if unit_test_external_dependencies %}
-UNIT_TEST_EXTERNAL_DEPENDENCIES = [{% for v in unit_test_external_dependencies %}
+UNIT_TEST_EXTERNAL_DEPENDENCIES: List[str] = [{% for v in unit_test_external_dependencies %}
     "{{v}}",{% endfor %}
 ]
 {%- else %}
-UNIT_TEST_EXTERNAL_DEPENDENCIES = []
+UNIT_TEST_EXTERNAL_DEPENDENCIES: List[str] = []
 {%- endif %}
 {%- if unit_test_local_dependencies %}
-UNIT_TEST_LOCAL_DEPENDENCIES = [{% for v in unit_test_local_dependencies %}
+UNIT_TEST_LOCAL_DEPENDENCIES: List[str] = [{% for v in unit_test_local_dependencies %}
     "{{v}}",{% endfor %}
 ]
 {%- else %}
-UNIT_TEST_LOCAL_DEPENDENCIES = []
+UNIT_TEST_LOCAL_DEPENDENCIES: List[str] = []
 {%- endif %}
 {%- if unit_test_dependencies %}
-UNIT_TEST_DEPENDENCIES = [{% for v in unit_test_dependencies %}
+UNIT_TEST_DEPENDENCIES: List[str] = [{% for v in unit_test_dependencies %}
     "{{v}}",{% endfor %}
 ]
 {%- else %}
-UNIT_TEST_DEPENDENCIES = []
+UNIT_TEST_DEPENDENCIES: List[str] = []
 {%- endif %}
 {%- if unit_test_extras %}
-UNIT_TEST_EXTRAS = [{% for v in unit_test_extras %}
+UNIT_TEST_EXTRAS: List[str] = [{% for v in unit_test_extras %}
     "{{v}}",{% endfor %}
 ]
 {%- else %}
-UNIT_TEST_EXTRAS = []
+UNIT_TEST_EXTRAS: List[str] = []
 {%- endif %}
 
 {%- if unit_test_extras_by_python %}
-UNIT_TEST_EXTRAS_BY_PYTHON = {{ '{' }}{% if unit_test_extras_by_python %}{% for python_version, extras in unit_test_extras_by_python.items() %}
+UNIT_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {{ '{' }}{% if unit_test_extras_by_python %}{% for python_version, extras in unit_test_extras_by_python.items() %}
     "{{python_version}}": [{% for v in extras %}
         "{{v}}",{% endfor %}
     ],{% endfor %}{% endif %}
 }
 {%- else %}
-UNIT_TEST_EXTRAS_BY_PYTHON = {}
+UNIT_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
 {%- endif %}
 {% if system_test_python_versions %}
-SYSTEM_TEST_PYTHON_VERSIONS = [{% for v in system_test_python_versions %}"{{v}}"{% if not loop.last %}, {% endif %}{% endfor %}]
+SYSTEM_TEST_PYTHON_VERSIONS: List[str] = [{% for v in system_test_python_versions %}"{{v}}"{% if not loop.last %}, {% endif %}{% endfor %}]
 {%- else %}
-SYSTEM_TEST_PYTHON_VERSIONS = []
+SYSTEM_TEST_PYTHON_VERSIONS: List[str] = []
 {%- endif %}
-SYSTEM_TEST_STANDARD_DEPENDENCIES = [
+SYSTEM_TEST_STANDARD_DEPENDENCIES: List[str] = [
     "mock",
     "pytest",
     "google-cloud-testutils",
 ]
 {%- if system_test_external_dependencies %}
-SYSTEM_TEST_EXTERNAL_DEPENDENCIES = [{% for v in system_test_external_dependencies %}
+SYSTEM_TEST_EXTERNAL_DEPENDENCIES: List[str] = [{% for v in system_test_external_dependencies %}
     "{{v}}",{% endfor %}
 ]
 {%- else %}
-SYSTEM_TEST_EXTERNAL_DEPENDENCIES = []
+SYSTEM_TEST_EXTERNAL_DEPENDENCIES: List[str] = []
 {%- endif %}
 {%- if system_test_local_dependencies %}
-SYSTEM_TEST_LOCAL_DEPENDENCIES = [{% for v in system_test_local_dependencies %}
+SYSTEM_TEST_LOCAL_DEPENDENCIES: List[str] = [{% for v in system_test_local_dependencies %}
     "{{v}}",{% endfor %}
 ]
 {%- else %}
-SYSTEM_TEST_LOCAL_DEPENDENCIES = []
+SYSTEM_TEST_LOCAL_DEPENDENCIES: List[str] = []
 {%- endif %}
 {%- if system_test_dependencies %}
-SYSTEM_TEST_DEPENDENCIES = [{% for v in system_test_dependencies %}
+SYSTEM_TEST_DEPENDENCIES: List[str] = [{% for v in system_test_dependencies %}
     "{{v}}",{% endfor %}
 ]
 {%- else %}
-SYSTEM_TEST_DEPENDENCIES = []
+SYSTEM_TEST_DEPENDENCIES: List[str] = []
 {%- endif %}
 {%- if system_test_extras %}
-SYSTEM_TEST_EXTRAS = [{% for v in system_test_extras %}
+SYSTEM_TEST_EXTRAS: List[str] = [{% for v in system_test_extras %}
     "{{v}}",{% endfor %}
 ]
 {%- else %}
-SYSTEM_TEST_EXTRAS = []
+SYSTEM_TEST_EXTRAS: List[str] = []
 {%- endif %}
 {%- if system_test_extras_by_python %}
-SYSTEM_TEST_EXTRAS_BY_PYTHON = {{ '{' }}{% if system_test_extras_by_python %}{% for python_version, extras in system_test_extras_by_python.items() %}
+SYSTEM_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {{ '{' }}{% if system_test_extras_by_python %}{% for python_version, extras in system_test_extras_by_python.items() %}
     "{{python_version}}": [{% for v in extras %}
         "{{v}}",{% endfor %}
     ],{% endfor %}{% endif %}
 }
 {%- else %}
-SYSTEM_TEST_EXTRAS_BY_PYTHON = {}
+SYSTEM_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
 {%- endif %}
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
@@ -137,6 +139,7 @@ nox.options.sessions = [
     "lint_setup_py",
     "blacken",
     "docs",
+    "format",
 ]
 
 # Error if a python version is missing
diff --git a/synthtool/gcp/templates/python_mono_repo_library/noxfile.py.j2 b/synthtool/gcp/templates/python_mono_repo_library/noxfile.py.j2
index 0a37d3b1b..6000495e3 100644
--- a/synthtool/gcp/templates/python_mono_repo_library/noxfile.py.j2
+++ b/synthtool/gcp/templates/python_mono_repo_library/noxfile.py.j2
@@ -21,17 +21,18 @@ import os
 import pathlib
 import re
 import shutil
+from typing import Dict, List
 import warnings
 
 import nox
 
-BLACK_VERSION = "black==22.3.0"
-ISORT_VERSION = "isort==5.10.1"
+BLACK_VERSION = "black[jupyter]==23.7.0"
+ISORT_VERSION = "isort==5.11.0"
 LINT_PATHS = ["docs", "google", "tests", "noxfile.py", "setup.py"]
 
 DEFAULT_PYTHON_VERSION = "{{ default_python_version }}"
 
-UNIT_TEST_PYTHON_VERSIONS = [{% for v in unit_test_python_versions %}"{{v}}"{% if not loop.last %}, {% endif %}{% endfor %}]
+UNIT_TEST_PYTHON_VERSIONS: List[str] = [{% for v in unit_test_python_versions %}"{{v}}"{% if not loop.last %}, {% endif %}{% endfor %}]
 UNIT_TEST_STANDARD_DEPENDENCIES = [
     "mock",
     "asyncmock",
@@ -40,47 +41,47 @@ UNIT_TEST_STANDARD_DEPENDENCIES = [
     "pytest-asyncio",
 ]
 {%- if unit_test_external_dependencies %}
-UNIT_TEST_EXTERNAL_DEPENDENCIES = [{% for v in unit_test_external_dependencies %}
+UNIT_TEST_EXTERNAL_DEPENDENCIES: List[str] = [{% for v in unit_test_external_dependencies %}
     "{{v}}",{% endfor %}
 ]
 {%- else %}
-UNIT_TEST_EXTERNAL_DEPENDENCIES = []
+UNIT_TEST_EXTERNAL_DEPENDENCIES: List[str] = []
 {%- endif %}
 {%- if unit_test_local_dependencies %}
-UNIT_TEST_LOCAL_DEPENDENCIES = [{% for v in unit_test_local_dependencies %}
+UNIT_TEST_LOCAL_DEPENDENCIES: List[str] = [{% for v in unit_test_local_dependencies %}
     "{{v}}",{% endfor %}
 ]
 {%- else %}
-UNIT_TEST_LOCAL_DEPENDENCIES = []
+UNIT_TEST_LOCAL_DEPENDENCIES: List[str] = []
 {%- endif %}
 {%- if unit_test_dependencies %}
-UNIT_TEST_DEPENDENCIES = [{% for v in unit_test_dependencies %}
+UNIT_TEST_DEPENDENCIES: List[str] = [{% for v in unit_test_dependencies %}
     "{{v}}",{% endfor %}
 ]
 {%- else %}
-UNIT_TEST_DEPENDENCIES = []
+UNIT_TEST_DEPENDENCIES: List[str] = []
 {%- endif %}
 {%- if unit_test_extras %}
-UNIT_TEST_EXTRAS = [{% for v in unit_test_extras %}
+UNIT_TEST_EXTRAS: List[str] = [{% for v in unit_test_extras %}
     "{{v}}",{% endfor %}
 ]
 {%- else %}
-UNIT_TEST_EXTRAS = []
+UNIT_TEST_EXTRAS: List[str] = []
 {%- endif %}
 
 {%- if unit_test_extras_by_python %}
-UNIT_TEST_EXTRAS_BY_PYTHON = {{ '{' }}{% if unit_test_extras_by_python %}{% for python_version, extras in unit_test_extras_by_python.items() %}
+UNIT_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {{ '{' }}{% if unit_test_extras_by_python %}{% for python_version, extras in unit_test_extras_by_python.items() %}
     "{{python_version}}": [{% for v in extras %}
         "{{v}}",{% endfor %}
     ],{% endfor %}{% endif %}
 }
 {%- else %}
-UNIT_TEST_EXTRAS_BY_PYTHON = {}
+UNIT_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
 {%- endif %}
 {% if system_test_python_versions %}
-SYSTEM_TEST_PYTHON_VERSIONS = [{% for v in system_test_python_versions %}"{{v}}"{% if not loop.last %}, {% endif %}{% endfor %}]
+SYSTEM_TEST_PYTHON_VERSIONS: List[str] = [{% for v in system_test_python_versions %}"{{v}}"{% if not loop.last %}, {% endif %}{% endfor %}]
 {%- else %}
-SYSTEM_TEST_PYTHON_VERSIONS = []
+SYSTEM_TEST_PYTHON_VERSIONS: List[str] = []
 {%- endif %}
 SYSTEM_TEST_STANDARD_DEPENDENCIES = [
     "mock",
@@ -88,41 +89,41 @@ SYSTEM_TEST_STANDARD_DEPENDENCIES = [
     "google-cloud-testutils",
 ]
 {%- if system_test_external_dependencies %}
-SYSTEM_TEST_EXTERNAL_DEPENDENCIES = [{% for v in system_test_external_dependencies %}
+SYSTEM_TEST_EXTERNAL_DEPENDENCIES: List[str] = [{% for v in system_test_external_dependencies %}
     "{{v}}",{% endfor %}
 ]
 {%- else %}
-SYSTEM_TEST_EXTERNAL_DEPENDENCIES = []
+SYSTEM_TEST_EXTERNAL_DEPENDENCIES: List[str] = []
 {%- endif %}
 {%- if system_test_local_dependencies %}
-SYSTEM_TEST_LOCAL_DEPENDENCIES = [{% for v in system_test_local_dependencies %}
+SYSTEM_TEST_LOCAL_DEPENDENCIES: List[str] = [{% for v in system_test_local_dependencies %}
     "{{v}}",{% endfor %}
 ]
 {%- else %}
-SYSTEM_TEST_LOCAL_DEPENDENCIES = []
+SYSTEM_TEST_LOCAL_DEPENDENCIES: List[str] = []
 {%- endif %}
 {%- if system_test_dependencies %}
-SYSTEM_TEST_DEPENDENCIES = [{% for v in system_test_dependencies %}
+SYSTEM_TEST_DEPENDENCIES: List[str] = [{% for v in system_test_dependencies %}
     "{{v}}",{% endfor %}
 ]
 {%- else %}
-SYSTEM_TEST_DEPENDENCIES = []
+SYSTEM_TEST_DEPENDENCIES: List[str] = []
 {%- endif %}
 {%- if system_test_extras %}
-SYSTEM_TEST_EXTRAS = [{% for v in system_test_extras %}
+SYSTEM_TEST_EXTRAS: List[str] = [{% for v in system_test_extras %}
     "{{v}}",{% endfor %}
 ]
 {%- else %}
-SYSTEM_TEST_EXTRAS = []
+SYSTEM_TEST_EXTRAS: List[str] = []
 {%- endif %}
 {%- if system_test_extras_by_python %}
-SYSTEM_TEST_EXTRAS_BY_PYTHON = {{ '{' }}{% if system_test_extras_by_python %}{% for python_version, extras in system_test_extras_by_python.items() %}
+SYSTEM_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {{ '{' }}{% if system_test_extras_by_python %}{% for python_version, extras in system_test_extras_by_python.items() %}
     "{{python_version}}": [{% for v in extras %}
         "{{v}}",{% endfor %}
     ],{% endfor %}{% endif %}
 }
 {%- else %}
-SYSTEM_TEST_EXTRAS_BY_PYTHON = {}
+SYSTEM_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
 {%- endif %}
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
diff --git a/tests/test_python_library.py b/tests/test_python_library.py
index de17c8be0..5853decbf 100644
--- a/tests/test_python_library.py
+++ b/tests/test_python_library.py
@@ -35,7 +35,7 @@
             {"unit_test_local_dependencies": ["../testutils", "../unitutils"]},
             [
                 """\
-UNIT_TEST_LOCAL_DEPENDENCIES = [
+UNIT_TEST_LOCAL_DEPENDENCIES: List[str] = [
     "../testutils",
     "../unitutils",
 ]""",
@@ -45,7 +45,7 @@
             {"system_test_local_dependencies": ["../testutils", "../sysutils"]},
             [
                 """\
-SYSTEM_TEST_LOCAL_DEPENDENCIES = [
+SYSTEM_TEST_LOCAL_DEPENDENCIES: List[str] = [
     "../testutils",
     "../sysutils",
 ]""",
@@ -55,7 +55,7 @@
             {"unit_test_extras": ["abc", "def"]},
             [
                 """\
-UNIT_TEST_EXTRAS = [
+UNIT_TEST_EXTRAS: List[str] = [
     "abc",
     "def",
 ]""",
@@ -64,7 +64,7 @@
         (
             {"system_test_extras": ["abc", "def"]},
             """\
-SYSTEM_TEST_EXTRAS = [
+SYSTEM_TEST_EXTRAS: List[str] = [
     "abc",
     "def",
 ]""",
@@ -73,7 +73,7 @@
             {"unit_test_extras_by_python": {"3.8": ["abc", "def"]}},
             [
                 """\
-UNIT_TEST_EXTRAS_BY_PYTHON = {
+UNIT_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {
     "3.8": [
         "abc",
         "def",
@@ -85,7 +85,7 @@
             {"system_test_extras_by_python": {"3.8": ["abc", "def"]}},
             [
                 """\
-SYSTEM_TEST_EXTRAS_BY_PYTHON = {
+SYSTEM_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {
     "3.8": [
         "abc",
         "def",
@@ -100,12 +100,12 @@
             },
             [
                 """\
-UNIT_TEST_EXTRAS = [
+UNIT_TEST_EXTRAS: List[str] = [
     "tuv",
     "wxyz",
 ]""",
                 """\
-UNIT_TEST_EXTRAS_BY_PYTHON = {
+UNIT_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {
     "3.8": [
         "abc",
         "def",
@@ -120,12 +120,12 @@
             },
             [
                 """\
-SYSTEM_TEST_EXTRAS = [
+SYSTEM_TEST_EXTRAS: List[str] = [
     "tuv",
     "wxyz",
 ]""",
                 """\
-SYSTEM_TEST_EXTRAS_BY_PYTHON = {
+SYSTEM_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {
     "3.8": [
         "abc",
         "def",