diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 530238c9..23d221c8 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -10,7 +10,7 @@ jobs:
     strategy:
       matrix:
         os: ["ubuntu-latest", "windows-latest", "macos-latest"]
-        py: ["3.13-dev", "3.12", "3.11", "3.10", "3.9", "3.8"]
+        py: ["3.14-dev", "3.13", "3.12", "3.11", "3.10", "3.9", "3.8"]
 
     runs-on: ${{ matrix.os }}
     name: Run test with Python ${{ matrix.py }} on ${{ matrix.os }}
@@ -26,10 +26,15 @@ jobs:
           allow-prereleases: true
           cache: "pip"
 
-      - name: Build
+      - name: Prepare
         shell: bash
         run: |
+          pip install -U pip
           pip install -r requirements.txt pytest
+
+      - name: Build
+        shell: bash
+        run: |
           make cython
           pip install .
 
diff --git a/.github/workflows/wheel.yml b/.github/workflows/wheel.yml
index 50157223..686d7dd0 100644
--- a/.github/workflows/wheel.yml
+++ b/.github/workflows/wheel.yml
@@ -1,25 +1,22 @@
-name: Build Wheels
+name: Build sdist and Wheels
 on:
   push:
     branches: [main]
-  create:
+  release:
+    types:
+      - published
   workflow_dispatch:
 
 jobs:
   build_wheels:
     strategy:
       matrix:
-        os: ["ubuntu-latest", "windows-latest", "macos-latest"]
+        # macos-13 is for intel
+        os: ["ubuntu-24.04", "ubuntu-24.04-arm", "windows-latest", "macos-13", "macos-latest"]
     runs-on: ${{ matrix.os }}
     name: Build wheels on ${{ matrix.os }}
 
     steps:
-      - name: Set up QEMU
-        if: runner.os == 'Linux'
-        uses: docker/setup-qemu-action@v3
-        with:
-          platforms: all
-
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
@@ -32,16 +29,14 @@ jobs:
           make cython
 
       - name: Build
-        uses: pypa/cibuildwheel@v2.20.0
+        uses: pypa/cibuildwheel@v2.23.3
         env:
           CIBW_TEST_REQUIRES: "pytest"
           CIBW_TEST_COMMAND: "pytest {package}/test"
-          CIBW_ARCHS_LINUX: auto aarch64
-          CIBW_ARCHS_MACOS: x86_64 universal2 arm64
           CIBW_SKIP: "pp* cp38-macosx_*"
 
       - name: Build sdist
-        if: runner.os == 'Linux'
+        if: runner.os == 'Linux' && runner.arch == 'X64'
         run: |
           pip install build
           python -m build -s -o wheelhouse
@@ -51,3 +46,43 @@ jobs:
         with:
           name: wheels-${{ matrix.os }}
           path: wheelhouse
+
+  # combine all wheels into one artifact
+  combine_wheels:
+    needs: [build_wheels]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          # unpacks all CIBW artifacts into dist/
+          pattern: wheels-*
+          path: dist
+          merge-multiple: true
+
+      - name: Upload Wheels to artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: wheels-all
+          path: dist
+
+  # https://github.com/pypa/cibuildwheel/blob/main/examples/github-deploy.yml
+  upload_pypi:
+    needs: [build_wheels]
+    runs-on: ubuntu-latest
+    environment: pypi
+    permissions:
+      id-token: write
+    if: github.event_name == 'release' && github.event.action == 'published'
+    # or, alternatively, upload to PyPI on every tag starting with 'v' (remove on: release above to use this)
+    # if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          # unpacks all CIBW artifacts into dist/
+          pattern: wheels-*
+          path: dist
+          merge-multiple: true
+
+      - uses: pypa/gh-action-pypi-publish@release/v1
+        #with:
+        # To test: repository-url: https://test.pypi.org/legacy/
diff --git a/ChangeLog.rst b/ChangeLog.rst
index 863c6b2c..418c444c 100644
--- a/ChangeLog.rst
+++ b/ChangeLog.rst
@@ -1,3 +1,17 @@
+1.1.1
+=====
+
+Release Date: 2025-06-13
+
+* No change from 1.1.1rc1.
+
+1.1.1rc1
+========
+
+Release Date: 2025-06-06
+
+* Update Cython to 3.1.1 and cibuildwheel to 2.23.3.
+
 1.1.0
 =====
 
diff --git a/docs/conf.py b/docs/conf.py
index ab0ad3c8..28116cd6 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -12,9 +12,9 @@
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
-#import os
-#import sys
-#sys.path.insert(0, os.path.abspath('..'))
+# import os
+# import sys
+# sys.path.insert(0, os.path.abspath('..'))
 
 # -- General configuration -----------------------------------------------------
 
diff --git a/msgpack/__init__.py b/msgpack/__init__.py
index b6151054..ad68271d 100644
--- a/msgpack/__init__.py
+++ b/msgpack/__init__.py
@@ -4,8 +4,8 @@
 from .exceptions import *  # noqa: F403
 from .ext import ExtType, Timestamp
 
-version = (1, 1, 0)
-__version__ = "1.1.0"
+version = (1, 1, 1)
+__version__ = "1.1.1"
 
 
 if os.environ.get("MSGPACK_PUREPYTHON"):
diff --git a/pyproject.toml b/pyproject.toml
index d041d4c0..b1628322 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,10 +1,13 @@
 [build-system]
-requires = ["setuptools >= 69.5.1"]
+# 75.3.0 is the latest version supporting Python 3.8
+requires = ["setuptools >= 75.3.0"]
 build-backend = "setuptools.build_meta"
 
 [project]
 name = "msgpack"
 dynamic = ["version"]
+# `license = "Apache-2.0"` is preferred. But keep old syntax for Python 3.8 compatibility.
+# https://github.com/msgpack/msgpack-python/pull/637
 license = {text="Apache 2.0"}
 authors = [{name="Inada Naoki", email="songofacandy@gmail.com"}]
 description = "MessagePack serializer"
@@ -14,17 +17,17 @@ requires-python = ">=3.8"
 classifiers = [
     "Development Status :: 5 - Production/Stable",
     "Operating System :: OS Independent",
-    "Programming Language :: Python",
-    "Programming Language :: Python :: 3",
+    "Topic :: File Formats",
+    "Intended Audience :: Developers",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
     "Programming Language :: Python :: Implementation :: CPython",
     "Programming Language :: Python :: Implementation :: PyPy",
-    "Intended Audience :: Developers",
-    "License :: OSI Approved :: Apache Software License",
 ]
 
 [project.urls]
diff --git a/requirements.txt b/requirements.txt
index b677f068..78a2f38f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1 @@
-Cython~=3.0.11
+Cython~=3.1.1