diff --git a/.github/workflows/news.yaml b/.github/workflows/news.yaml
index 2ecc75f..00cb31e 100644
--- a/.github/workflows/news.yaml
+++ b/.github/workflows/news.yaml
@@ -26,13 +26,13 @@ jobs:
       - name: 📦 Install release tools
         env:
           EXCLUDE_NEWER: 7 days
-          # Temporary: release-creator 4.3.0 is younger than seven days. Delete after 2026-11-03.
-          EXCLUDE_NEWER_PACKAGE: release-creator=2026-10-27T20:03:25Z
+          # Temporary: release-creator 4.3.1 is younger than seven days. Delete after 2026-11-06.
+          EXCLUDE_NEWER_PACKAGE: release-creator=2026-10-30T01:08:13Z
         run: |
           tools/install_live_tools.sh "$RUNNER_TEMP/release-tools" 'release-creator>=4.1' 'towncrier>=26.9'
           uv run --no-project --python "$RUNNER_TEMP/release-tools" python tools/expose_locked_commands.py "$RUNNER_TEMP/release-tools"
       - name: 🔍 Validate news fragments
         uses: $/validate-news
         with:
-          # Temporary: release-creator 4.3.0 is younger than seven days. Delete after 2026-11-03.
-          exclude-newer-package: release-creator=2026-10-27T20:03:25Z
+          # Temporary: release-creator 4.3.1 is younger than seven days. Delete after 2026-11-06.
+          exclude-newer-package: release-creator=2026-10-30T01:08:13Z
diff --git a/.github/workflows/prepare-release.yaml b/.github/workflows/prepare-release.yaml
index 1d79dea..5b821df 100644
--- a/.github/workflows/prepare-release.yaml
+++ b/.github/workflows/prepare-release.yaml
@@ -18,7 +18,7 @@ jobs:
       pull-requests: read
     with:
       bump: ${{ inputs.bump }}
-      # Temporary: release-creator 4.3.0 is younger than seven days. Delete after 2026-11-03.
-      exclude-newer-package: release-creator=2026-10-27T20:03:25Z
+      # Temporary: release-creator 4.3.1 is younger than seven days. Delete after 2026-11-06.
+      exclude-newer-package: release-creator=2026-10-30T01:08:13Z
     secrets:
       RELEASE_APP_PRIVATE_KEY: ${{ secrets.RELEASE_APP_PRIVATE_KEY }}
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 77042fc..d597fac 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -30,8 +30,8 @@ jobs:
       - name: 📦 Install release tools
         env:
           EXCLUDE_NEWER: 7 days
-          # Temporary: release-creator 4.3.0 is younger than seven days. Delete after 2026-11-03.
-          EXCLUDE_NEWER_PACKAGE: release-creator=2026-10-27T20:03:25Z
+          # Temporary: release-creator 4.3.1 is younger than seven days. Delete after 2026-11-06.
+          EXCLUDE_NEWER_PACKAGE: release-creator=2026-10-30T01:08:13Z
         run: |
           tools/install_live_tools.sh .venv 'release-creator>=4.3'
           uv run --no-project --python .venv python tools/expose_locked_commands.py .venv
diff --git a/.github/workflows/update-tools.yaml b/.github/workflows/update-tools.yaml
index 6a58e67..d13cde5 100644
--- a/.github/workflows/update-tools.yaml
+++ b/.github/workflows/update-tools.yaml
@@ -16,5 +16,5 @@ jobs:
       commit-message: "🔧 build: refresh release tool lock"
       pull-request-title: "🔧 build: refresh release tool lock"
       pull-request-body: "Refresh the locked tools used by release preparation and CI."
-      # Temporary: release-creator 4.3.0 is younger than seven days. Delete after 2026-11-03.
-      exclude-newer-package: release-creator=2026-10-27T20:03:25Z
+      # Temporary: release-creator 4.3.1 is younger than seven days. Delete after 2026-11-06.
+      exclude-newer-package: release-creator=2026-10-30T01:08:13Z
diff --git a/pylock.toml b/pylock.toml
index 051523f..dace6ae 100644
--- a/pylock.toml
+++ b/pylock.toml
@@ -1045,7 +1045,7 @@ sha256 = "d76623373421df22fb4cf8817020cbb7ef15c725b9d5e45f17e189bfc384190f"
 
 [[packages]]
 name = "release-creator"
-version = "4.3.0"
+version = "4.3.1"
 marker = "\"release-prepare\" in dependency_groups or \"test\" in dependency_groups"
 requires-python = ">=3.15"
 dependencies = [
@@ -1058,14 +1058,23 @@ dependencies = [
 ]
 index = "https://pypi.org/simple/"
 
+[packages.sdist]
+name = "release_creator-4.3.1.tar.gz"
+upload-time = 2026-10-30 01:08:12.267181+00:00
+url = "https://files.pythonhosted.org/packages/71/40/23728468701e4ca7f1d98bc221c5cb99201be97340652691ccb228392ce5/release_creator-4.3.1.tar.gz"
+size = 170029
+
+[packages.sdist.hashes]
+sha256 = "e0b8076a639a375e2791d1cb754a9be95d86284e63f5bf83472cf1876fec49fc"
+
 [[packages.wheels]]
-name = "release_creator-4.3.0-py3-none-any.whl"
-upload-time = 2026-10-27 20:03:24.840699+00:00
-url = "https://files.pythonhosted.org/packages/c4/35/cb402853dd142441cbfca66439332ff190edb76dc2111bae3bf52fa67ed8/release_creator-4.3.0-py3-none-any.whl"
-size = 53455
+name = "release_creator-4.3.1-py3-none-any.whl"
+upload-time = 2026-10-30 01:08:10.960230+00:00
+url = "https://files.pythonhosted.org/packages/05/de/dbafaeb13ffccdedb09780428f6613e68cde95790ffb56d0e3a3ac217861/release_creator-4.3.1-py3-none-any.whl"
+size = 53994
 
 [packages.wheels.hashes]
-sha256 = "8d5a60d4b90fb772c73f106cce25c4dec9a658ef483b4223a5af4a9f4a6d5429"
+sha256 = "b661e8c86a51edaec8f768c8aa6061d462be8ff3151194aec3d53b69d2954efc"
 
 [[packages]]
 name = "setuptools"
@@ -1462,6 +1471,7 @@ command-line = [
     "lock",
     "--all-groups",
     "--all-extras",
+    "--no-cache",
 ]
 input-path = "pyproject.toml"
 mode = "universal"
diff --git a/pyproject.toml b/pyproject.toml
index 631c327..ce157e2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ license-files = [ "LICENSE" ]
 
 [dependency-groups]
 build = [ "Cython>=3.0", "setuptools>=80" ]
-release-prepare = [ "release-creator>=4.1", "towncrier>=26.9", "prek>=0.2" ]
+release-prepare = [ "release-creator>=4.3.1", "towncrier>=26.9", "prek>=0.2" ]
 test = [
   "certifi",
   "coverage[toml]>=7.10",
@@ -20,7 +20,7 @@ test = [
   "pytest-mock>=3.16",
   "pytest-xdist>=3",
   "pyyaml>=6",
-  "release-creator>=4.3",
+  "release-creator>=4.3.1",
   "tomlkit>=0.13",
   "tox>=4.64.7",
   "tox-uv>=1.36.1",
@@ -36,9 +36,9 @@ uploaded-prior-to = "P7D"
 python = ">=3.15,<3.16"
 platforms = ["linux_x86_64"]
 
-# Temporary: release-creator 4.3.0 is younger than seven days. Delete after 2026-11-03.
+# Temporary: release-creator 4.3.1 is younger than seven days. Delete after 2026-11-06.
 [tool.nab.packages.release-creator]
-uploaded-prior-to = 2026-10-27T20:03:25Z
+uploaded-prior-to = 2026-10-30T01:08:13Z
 
 [tool.ruff]
 line-length = 120