diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0c5438df..8c128230 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -1,20 +1,23 @@
 ---
 name: Test
 
-"on":
+on:
   push:
   pull_request:
 
 permissions:
   contents: read
 
+env:
+  FORCE_COLOR: 1
+
 jobs:
   build:
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
         os: [ubuntu-latest, macos-latest, windows-latest]
 
     steps:
diff --git a/isort/stdlibs/__init__.py b/isort/stdlibs/__init__.py
index 3394a7ed..fc9dcbb8 100644
--- a/isort/stdlibs/__init__.py
+++ b/isort/stdlibs/__init__.py
@@ -1,2 +1,2 @@
 from . import all as _all
-from . import py2, py3, py27, py36, py37, py38, py39, py310, py311
+from . import py2, py3, py27, py36, py37, py38, py39, py310, py311, py312
diff --git a/isort/stdlibs/py3.py b/isort/stdlibs/py3.py
index 98825438..c94e9797 100644
--- a/isort/stdlibs/py3.py
+++ b/isort/stdlibs/py3.py
@@ -1,3 +1,11 @@
-from . import py36, py37, py38, py39, py310, py311
+from . import py36, py37, py38, py39, py310, py311, py312
 
-stdlib = py36.stdlib | py37.stdlib | py38.stdlib | py39.stdlib | py310.stdlib | py311.stdlib
+stdlib = (
+    py36.stdlib
+    | py37.stdlib
+    | py38.stdlib
+    | py39.stdlib
+    | py310.stdlib
+    | py311.stdlib
+    | py312.stdlib
+)
diff --git a/isort/stdlibs/py311.py b/isort/stdlibs/py311.py
index 6fa42e99..8f1d6e1f 100644
--- a/isort/stdlibs/py311.py
+++ b/isort/stdlibs/py311.py
@@ -8,6 +8,7 @@
 stdlib = {
     "_ast",
     "_thread",
+    "_tkinter",
     "abc",
     "aifc",
     "argparse",
@@ -153,6 +154,7 @@
     "shutil",
     "signal",
     "site",
+    "sitecustomize",
     "smtpd",
     "smtplib",
     "sndhdr",
@@ -201,6 +203,7 @@
     "unicodedata",
     "unittest",
     "urllib",
+    "usercustomize",
     "uu",
     "uuid",
     "venv",
diff --git a/isort/stdlibs/py312.py b/isort/stdlibs/py312.py
new file mode 100644
index 00000000..cedf2a2f
--- /dev/null
+++ b/isort/stdlibs/py312.py
@@ -0,0 +1,220 @@
+"""
+File contains the standard library of Python 3.12.
+
+DO NOT EDIT. If the standard library changes, a new list should be created
+using the mkstdlibs.py script.
+"""
+
+stdlib = {
+    "_ast",
+    "_thread",
+    "_tkinter",
+    "abc",
+    "aifc",
+    "argparse",
+    "array",
+    "ast",
+    "asyncio",
+    "atexit",
+    "audioop",
+    "base64",
+    "bdb",
+    "binascii",
+    "bisect",
+    "builtins",
+    "bz2",
+    "cProfile",
+    "calendar",
+    "cgi",
+    "cgitb",
+    "chunk",
+    "cmath",
+    "cmd",
+    "code",
+    "codecs",
+    "codeop",
+    "collections",
+    "colorsys",
+    "compileall",
+    "concurrent",
+    "configparser",
+    "contextlib",
+    "contextvars",
+    "copy",
+    "copyreg",
+    "crypt",
+    "csv",
+    "ctypes",
+    "curses",
+    "dataclasses",
+    "datetime",
+    "dbm",
+    "decimal",
+    "difflib",
+    "dis",
+    "doctest",
+    "email",
+    "encodings",
+    "ensurepip",
+    "enum",
+    "errno",
+    "faulthandler",
+    "fcntl",
+    "filecmp",
+    "fileinput",
+    "fnmatch",
+    "fractions",
+    "ftplib",
+    "functools",
+    "gc",
+    "getopt",
+    "getpass",
+    "gettext",
+    "glob",
+    "graphlib",
+    "grp",
+    "gzip",
+    "hashlib",
+    "heapq",
+    "hmac",
+    "html",
+    "http",
+    "idlelib",
+    "imaplib",
+    "imghdr",
+    "importlib",
+    "inspect",
+    "io",
+    "ipaddress",
+    "itertools",
+    "json",
+    "keyword",
+    "lib2to3",
+    "linecache",
+    "locale",
+    "logging",
+    "lzma",
+    "mailbox",
+    "mailcap",
+    "marshal",
+    "math",
+    "mimetypes",
+    "mmap",
+    "modulefinder",
+    "msilib",
+    "msvcrt",
+    "multiprocessing",
+    "netrc",
+    "nis",
+    "nntplib",
+    "ntpath",
+    "numbers",
+    "operator",
+    "optparse",
+    "os",
+    "ossaudiodev",
+    "pathlib",
+    "pdb",
+    "pickle",
+    "pickletools",
+    "pipes",
+    "pkgutil",
+    "platform",
+    "plistlib",
+    "poplib",
+    "posix",
+    "posixpath",
+    "pprint",
+    "profile",
+    "pstats",
+    "pty",
+    "pwd",
+    "py_compile",
+    "pyclbr",
+    "pydoc",
+    "queue",
+    "quopri",
+    "random",
+    "re",
+    "readline",
+    "reprlib",
+    "resource",
+    "rlcompleter",
+    "runpy",
+    "sched",
+    "secrets",
+    "select",
+    "selectors",
+    "shelve",
+    "shlex",
+    "shutil",
+    "signal",
+    "site",
+    "sitecustomize",
+    "smtplib",
+    "sndhdr",
+    "socket",
+    "socketserver",
+    "spwd",
+    "sqlite3",
+    "sre",
+    "sre_compile",
+    "sre_constants",
+    "sre_parse",
+    "ssl",
+    "stat",
+    "statistics",
+    "string",
+    "stringprep",
+    "struct",
+    "subprocess",
+    "sunau",
+    "symtable",
+    "sys",
+    "sysconfig",
+    "syslog",
+    "tabnanny",
+    "tarfile",
+    "telnetlib",
+    "tempfile",
+    "termios",
+    "test",
+    "textwrap",
+    "threading",
+    "time",
+    "timeit",
+    "tkinter",
+    "token",
+    "tokenize",
+    "tomllib",
+    "trace",
+    "traceback",
+    "tracemalloc",
+    "tty",
+    "turtle",
+    "turtledemo",
+    "types",
+    "typing",
+    "unicodedata",
+    "unittest",
+    "urllib",
+    "usercustomize",
+    "uu",
+    "uuid",
+    "venv",
+    "warnings",
+    "wave",
+    "weakref",
+    "webbrowser",
+    "winreg",
+    "winsound",
+    "wsgiref",
+    "xdrlib",
+    "xml",
+    "xmlrpc",
+    "zipapp",
+    "zipfile",
+    "zipimport",
+    "zlib",
+    "zoneinfo",
+}
diff --git a/pyproject.toml b/pyproject.toml
index 6b481b4c..72c19c17 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,6 +24,7 @@ classifiers = [
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3 :: Only",
     "Programming Language :: Python :: Implementation :: CPython",
     "Programming Language :: Python :: Implementation :: PyPy",
diff --git a/scripts/mkstdlibs.py b/scripts/mkstdlibs.py
index 82c36556..9f375be2 100755
--- a/scripts/mkstdlibs.py
+++ b/scripts/mkstdlibs.py
@@ -4,7 +4,13 @@
 
 URL = "https://docs.python.org/{}/objects.inv"
 PATH = "isort/stdlibs/py{}.py"
-VERSIONS = [("2", "7"), ("3", "6"), ("3", "7"), ("3", "8"), ("3", "9"), ("3", "10"), ("3", "11")]
+VERSIONS = [
+    ("3", "8"),
+    ("3", "9"),
+    ("3", "10"),
+    ("3", "11"),
+    ("3", "12"),
+]
 
 DOCSTRING = """
 File contains the standard library of Python {}.
diff --git a/tests/unit/test_importable.py b/tests/unit/test_importable.py
index 52db143c..617a9d99 100644
--- a/tests/unit/test_importable.py
+++ b/tests/unit/test_importable.py
@@ -35,6 +35,7 @@ def test_importable():
     import isort.stdlibs.py39
     import isort.stdlibs.py310
     import isort.stdlibs.py311
+    import isort.stdlibs.py312
     import isort.utils
     import isort.wrap
     import isort.wrap_modes