Maintenance | add Pillow 12 support | drop Python 3.9

.github/workflows/publish.yml

@@ -11,13 +11,13 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
-          python-version: "3.13"
+          python-version: "3.14"
           cache: "pip"
           cache-dependency-path: "**/pyproject.toml"
 
@@ -43,7 +43,7 @@ jobs:
       # Mandatory for trusted publishing
       id-token: write
     steps:
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v5
 
       - name: 🚀 Publish package distributions to PyPI
         uses: pypa/gh-action-pypi-publish@release/v1

.github/workflows/test.yml

@@ -12,16 +12,16 @@ env:
   TOX_TESTENV_PASSENV: FORCE_COLOR
   PIP_DISABLE_PIP_VERSION_CHECK: "1"
   COVERAGE_CORE: sysmon # Only supported on Python 3.12+, ignore on older versions
-  PYTHON_LATEST: "3.13"
+  PYTHON_LATEST: "3.14"
 
 jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: ${{ env.PYTHON_LATEST }}
       - uses: pre-commit/[email protected]
@@ -32,14 +32,14 @@ jobs:
     needs: lint
     strategy:
       matrix:
-        python: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+        python: ["3.10", "3.11", "3.12", "3.13", "3.14"]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Install optimizers
         run: |
           sudo apt-get install -y jpegoptim pngquant gifsicle optipng libjpeg-progs webp
       - name: Set up Python ${{ matrix.python }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python }}
           allow-prereleases: true
@@ -65,14 +65,14 @@ jobs:
     needs: test
 
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/checkout@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: ${{ env.PYTHON_LATEST }}
           cache: pip
 
       - name: Download coverage data
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           pattern: coverage-data-*
           merge-multiple: true

.pre-commit-config.yaml

@@ -5,7 +5,7 @@
 exclude: "^tests/images/"
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v5.0.0
+    rev: v6.0.0
     hooks:
       - id: trailing-whitespace
       - id: end-of-file-fixer
@@ -15,13 +15,13 @@ repos:
       - id: check-yaml
       - id: debug-statements
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: "v0.7.1"
+    rev: "v0.14.0"
     hooks:
-      - id: ruff
+      - id: ruff-check
         args: [--fix, --exit-non-zero-on-fix]
       - id: ruff-format
   - repo: https://github.com/pycontribs/mirrors-prettier
-    rev: v3.3.3
+    rev: v3.6.2
     hooks:
       - id: prettier
         types_or: [json, yaml, markdown, bash, editorconfig, toml]

README.md

@@ -16,7 +16,7 @@ It converts the image between the libraries when necessary.
 Willow currently has basic resize and crop operations, face and feature detection and animated GIF support.
 New operations and library integrations can also be [easily implemented](https://willow.wagtail.org/latest/guide/extend.html).
 
-The library is written in pure Python and supports versions 3.9, 3.10, 3.11, 3.12, and 3.13.
+The library is written in pure Python and supports versions 3.10, 3.11, 3.12, 3.13 and 3.14.
 
 ## Examples
 

docs/changelog.rst

@@ -4,7 +4,10 @@ Changelog
 1.12.0 (UNRELEASED)
 -------------------
 
-- Add provisional support for Python 3.14 pending its general release (Storm Heg)
+- Add support for Python 3.14 (Storm Heg)
+- Drop support for Python 3.9 (Storm Heg)
+- The minimum required pillow-heif version is now 1.0.0 (Storm Heg)
+- Add support for Pillow 12 and beyond, removed hard upper bound (Storm Heg)
 
 1.11.0 (2025-07-16)
 -------------------

pyproject.toml

@@ -16,7 +16,6 @@ classifiers = [
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3 :: Only",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
@@ -25,19 +24,16 @@ classifiers = [
 ]
 
 dynamic = ["version"]  # will read __version__ from willow/__init__.py
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 dependencies = [
     "filetype>=1.0.10,!=1.1.0",
     "defusedxml>=0.7,<1.0",
 ]
 
 [project.optional-dependencies]
-pillow = ["Pillow>=11.3.0,<12.0.0"]
+pillow = ["Pillow>=11.3.0"]
 wand = ["Wand>=0.6,<1.0"]
-heif = [
-    "pillow-heif>=0.10.0; python_version < '3.12'",
-    "pillow-heif>=0.13.0; python_version >= '3.12'",
-]
+heif = ["pillow-heif>=1.0.0"]
 
 testing = [
     "willow[pillow,wand,heif]",
@@ -117,7 +113,7 @@ exclude_lines = [
 ]
 
 [tool.ruff]
-target-version = "py39"  # minimum target version
+target-version = "py310"  # minimum target version
 
 # E501: Line too long
 lint.ignore = ["E501"]