diff --git a/.github/workflows/fuzz.yml b/.github/workflows/fuzz.yml
index 1cecc862671..a52e8faa437 100644
--- a/.github/workflows/fuzz.yml
+++ b/.github/workflows/fuzz.yml
@@ -24,7 +24,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
 
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
diff --git a/.github/workflows/pypi_upload.yml b/.github/workflows/pypi_upload.yml
index 5b2b80c5058..7e9163c72ac 100644
--- a/.github/workflows/pypi_upload.yml
+++ b/.github/workflows/pypi_upload.yml
@@ -55,7 +55,7 @@ jobs:
         run: |
           {
             CIBW_BUILD="cp310-*" cibuildwheel --print-build-identifiers --platform linux | pyp 'json.dumps({"only": x, "os": "ubuntu-latest"})'
-            CIBW_BUILD="cp314-*" cibuildwheel --print-build-identifiers --platform windows | pyp 'json.dumps({"only": x, "os": "windows-latest"})'
+            CIBW_BUILD="cp315-*" cibuildwheel --print-build-identifiers --platform windows | pyp 'json.dumps({"only": x, "os": "windows-latest"})'
           } | pyp 'json.dumps(list(map(json.loads, lines)))' > /tmp/matrix
         env:
           CIBW_ARCHS_LINUX: x86_64
diff --git a/.github/workflows/release_tests.yml b/.github/workflows/release_tests.yml
index e4cb12194b4..7464748e69d 100644
--- a/.github/workflows/release_tests.yml
+++ b/.github/workflows/release_tests.yml
@@ -26,7 +26,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: ["3.12", "3.13", "3.14"]
+        python-version: ["3.12", "3.13", "3.14", "3.15"]
         os: [macOS-latest, ubuntu-latest, windows-latest]
 
     steps:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 86510d79506..ee8a3acb1e0 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -37,7 +37,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12.10", "3.13", "3.14", "pypy-3.11"]
+        python-version: ["3.10", "3.11", "3.12.10", "3.13", "3.14", "3.15", "pypy-3.11"]
         os: [ubuntu-latest, macOS-latest, windows-latest, windows-11-arm]
         exclude:
           # setup-python only supports CPython 3.11+ on arm64 windows
diff --git a/CHANGES.md b/CHANGES.md
index 141dcd5c64e..e315e591474 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -9,13 +9,15 @@
 
 <!-- Include any especially major or disruptive changes here -->
 
+- Python 3.15 support (#5101)
+- Add support for unpacking in comprehensions (PEP 798) and for lazy imports (PEP 810),
+  both new syntactic features in Python 3.15 (#5048)
+
 ### Stable style
 
 <!-- Changes that affect Black's stable style -->
 
 - Fix crash when an f-string follows a `# fmt: off` comment inside brackets (#5097)
-- Add support for unpacking in comprehensions (PEP 798) and for lazy imports (PEP 810),
-  both new syntactic features in Python 3.15 (#5048)
 
 ### Preview style
 
diff --git a/plugin/black.vim b/plugin/black.vim
index db6b56646c5..b10e7d66cf5 100644
--- a/plugin/black.vim
+++ b/plugin/black.vim
@@ -86,6 +86,7 @@ function BlackComplete(ArgLead, CmdLine, CursorPos)
 \       'target_version=py312',
 \       'target_version=py313',
 \       'target_version=py314',
+\       'target_version=py315',
 \   ]
 endfunction
 
diff --git a/pyproject.toml b/pyproject.toml
index ffa7c784e75..95d5589827d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -49,6 +49,7 @@ classifiers = [
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: 3.14",
+    "Programming Language :: Python :: 3.15",
     "Topic :: Software Development :: Libraries :: Python Modules",
     "Topic :: Software Development :: Quality Assurance",
 ]
diff --git a/tests/util.py b/tests/util.py
index 26fd5aae720..0acce4bed2b 100644
--- a/tests/util.py
+++ b/tests/util.py
@@ -34,7 +34,6 @@
     TargetVersion.PY37,
     TargetVersion.PY38,
     TargetVersion.PY39,
-    TargetVersion.PY315,
 }
 
 DEFAULT_MODE = black.Mode()
diff --git a/tox.ini b/tox.ini
index bf4cfd399be..0495e8e930d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 isolated_build = true
-envlist = {,ci-}py{310,311,312,313,314,py3},fuzz,run_self,generate_schema
+envlist = {,ci-}py{310,311,312,313,314,315,py3},fuzz,run_self,generate_schema
 
 [testenv]
 setenv =