diff --git a/.github/workflows/publish-to-pypi.yaml b/.github/workflows/publish-to-pypi.yaml
index ea667db..085248f 100644
--- a/.github/workflows/publish-to-pypi.yaml
+++ b/.github/workflows/publish-to-pypi.yaml
@@ -13,7 +13,7 @@ jobs:
     steps:
     - uses: actions/checkout@v7
     - name: Set up Python
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v7
       with:
         python-version: "3.x"
     - name: Install hatch
@@ -50,7 +50,7 @@ jobs:
         name: python-package-distributions
         path: dist/
     - name: Publish distribution 📦 to PyPI
-      uses: pypa/gh-action-pypi-publish@cef221092ed1bacb1cc03d23a2d87d1d172e277b # v1.14.0
+      uses: pypa/gh-action-pypi-publish@dc37677b2e1c63e2034f94d8a5b11f265b73ba33 # v1.14.2
 
   github-release:
     name: >-
@@ -71,7 +71,7 @@ jobs:
         name: python-package-distributions
         path: dist/
     - name: Sign the dists with Sigstore
-      uses: sigstore/gh-action-sigstore-python@5b79a39c381910c090341a2c9b0bf022c8b387e1 #v3.4.0
+      uses: sigstore/gh-action-sigstore-python@790bc6befb9d733738f18d8f895854b453640ec9 #v3.5.0
       with:
         inputs: >-
           ./dist/*.tar.gz
@@ -115,6 +115,12 @@ jobs:
         name: python-package-distributions
         path: dist/
     - name: Publish distribution 📦 to TestPyPI
-      uses: pypa/gh-action-pypi-publish@cef221092ed1bacb1cc03d23a2d87d1d172e277b # v1.14.0
+      uses: pypa/gh-action-pypi-publish@dc37677b2e1c63e2034f94d8a5b11f265b73ba33 # v1.14.2
       with:
         repository-url: https://test.pypi.org/legacy/
+        # This job runs on every push, but the project version only changes at
+        # release time, so most runs re-upload an already-published file and
+        # TestPyPI rejects it with "400 File already exists". Skip files that
+        # are already there instead of failing the build. Deliberately not set
+        # on the real PyPI job, where a duplicate upload should fail loudly.
+        skip-existing: true
diff --git a/.github/workflows/pyright.yaml b/.github/workflows/pyright.yaml
index b0da9d6..e2cc5b9 100644
--- a/.github/workflows/pyright.yaml
+++ b/.github/workflows/pyright.yaml
@@ -14,7 +14,7 @@ jobs:
     steps:
     - uses: actions/checkout@v7
     - name: Set up Python
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v7
       with:
         python-version: '3.x'
     - name: Install dependencies
diff --git a/.github/workflows/pytest.yaml b/.github/workflows/pytest.yaml
index e50b2d7..54c3d7a 100644
--- a/.github/workflows/pytest.yaml
+++ b/.github/workflows/pytest.yaml
@@ -20,7 +20,7 @@ jobs:
     steps:
     - uses: actions/checkout@v7
     - name: Set up Python
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v7
       with:
         python-version: '3.x'
     - name: Install dependencies
diff --git a/.github/workflows/ruff.yaml b/.github/workflows/ruff.yaml
index ff87d99..f8a277e 100644
--- a/.github/workflows/ruff.yaml
+++ b/.github/workflows/ruff.yaml
@@ -14,7 +14,7 @@ jobs:
     steps:
     - uses: actions/checkout@v7
     - name: Set up Python
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v7
       with:
         python-version: '3.x'
     - name: Install dependencies
diff --git a/pyproject.toml b/pyproject.toml
index 8c37081..da8d525 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -101,8 +101,21 @@ lint.ignore = [
   "W191", "E111", "E114", "E117", "D206", "D300", "Q000", "Q001", "Q002", "Q003", "COM812", "COM819", "ISC001", "ISC002",
   # Conflicts with other rule, choosing one
   "D203", "D213",
+  # Stabilised out of preview in ruff 0.16 and pulled in by "ALL".
+  # This project does not use per-file copyright headers, and the public
+  # AnnotatedLogger constructor keeps its positional signature for
+  # backwards compatibility.
+  "CPY001", "PLR0917",
 ]
 
+[tool.ruff.format]
+# ruff 0.16 began formatting Python code blocks embedded in Markdown. The
+# README's ```python blocks deliberately show sample JSON log output beneath
+# the source; the formatter parses those lines as Python and rewrites them
+# into multi-line dict literals, destroying the documentation. Keep Markdown
+# out of the formatter.
+exclude = ["*.md"]
+
 [tool.ruff.lint.per-file-ignores]
 "test/*" = ["E501", "D10", "ANN", "S101", "PLR2004"]
 
diff --git a/requirements.txt b/requirements.txt
index bec5f6b..94b4aea 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@
 # - requests
 #
 
-certifi==2026.6.17
+certifi==2026.7.22
     # via requests
 charset-normalizer==3.4.9
     # via requests
diff --git a/requirements/requirements-dev.txt b/requirements/requirements-dev.txt
index 2d21e24..19245d9 100644
--- a/requirements/requirements-dev.txt
+++ b/requirements/requirements-dev.txt
@@ -19,19 +19,19 @@
 # - requests
 #
 
-certifi==2026.6.17
+certifi==2026.7.22
     # via requests
 cfgv==3.5.0
     # via pre-commit
 charset-normalizer==3.4.9
     # via requests
-coverage==7.15.1
+coverage==7.15.4
     # via
     #   hatch.envs.dev
     #   pytest-cov
 distlib==0.4.3
     # via virtualenv
-filelock==3.29.7
+filelock==3.32.2
     # via virtualenv
 freezegun==1.5.5
     # via pytest-freezer
@@ -47,15 +47,15 @@ nodeenv==1.10.0
     # via
     #   pre-commit
     #   pyright
-packaging==26.2
+packaging==26.3
     # via pytest
-platformdirs==4.10.0
+platformdirs==4.11.0
     # via virtualenv
 pluggy==1.6.0
     # via
     #   pytest
     #   pytest-cov
-pre-commit==4.6.0
+pre-commit==4.6.1
     # via hatch.envs.dev
 pychoir==0.0.30
     # via hatch.envs.dev
@@ -93,7 +93,7 @@ requests==2.34.2
     #   requests-mock
 requests-mock==1.12.1
     # via hatch.envs.dev
-ruff==0.15.21
+ruff==0.16.1
     # via hatch.envs.dev
 six==1.17.0
     # via python-dateutil
@@ -103,5 +103,5 @@ typing-extensions==4.16.0
     #   pyright
 urllib3==2.7.0
     # via requests
-virtualenv==21.6.1
+virtualenv==21.7.1
     # via pre-commit