diff --git a/.github/workflows/packaging.yml b/.github/workflows/packaging.yml
index e28dd79..11b0dd1 100644
--- a/.github/workflows/packaging.yml
+++ b/.github/workflows/packaging.yml
@@ -42,10 +42,10 @@ jobs:
           echo "runner.arch=$RUNNER_ARCH"
 
       - name: Checkout repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ env.PYTHON_VERSION }}
 
@@ -67,14 +67,14 @@ jobs:
         run: pytest
 
       - name: Upload python source package
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: sdist
           path: dist/*.tar.gz
           if-no-files-found: error
 
   build_wheels:
-    name: Build on ${{ matrix.os }}
+    name: Build on ${{ matrix.os }}, python=${{ matrix.python_version }}
     needs:
       - build_sdist
     runs-on: ${{ matrix.os }}
@@ -82,10 +82,11 @@ jobs:
       fail-fast: false
       matrix:
         os: ["ubuntu-latest", "windows-latest", "macos-latest"]
+        python_version: ["cp39", "cp310", "cp311", "cp312"]
 
     steps:
       - name: Download sdist
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: sdist
           path: dist/
@@ -95,8 +96,15 @@ jobs:
         id: find_sdist_filename
         run: echo "filename=$(ls dist/*.tar.gz)" >> $GITHUB_OUTPUT
 
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+
+      - name: Install cibuildwheel
+        run: python -m pip install cibuildwheel==2.17.0
+
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.13.0
         env:
           CIBW_ARCHS_MACOS: universal2
           CIBW_ARCHS_WINDOWS: native
@@ -104,13 +112,13 @@ jobs:
           # skip PyPy: Cython only supports CPython
           # skip musllinux: build takes too long with default os images.
           CIBW_SKIP: 'pp* *musllinux*'
+          CIBW_BUILD: '${{ matrix.python_version }}-*'
           CIBW_TEST_REQUIRES: pytest
           CIBW_TEST_COMMAND: pytest {package}/test
-        with:
-          package-dir: ${{ steps.find_sdist_filename.outputs.filename }}
+        run: python -m cibuildwheel ${{ steps.find_sdist_filename.outputs.filename }}
 
       - name: Upload python wheels
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: wheels
           path: wheelhouse/*.whl
@@ -129,13 +137,13 @@ jobs:
 
     steps:
       - name: Download python sdist artifact
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: sdist
           path: dist/
 
       - name: Download python wheel artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: wheels
           path: dist/
diff --git a/CHANGELOG.md b/CHANGELOG.md
index cd725e9..b776edc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,14 @@
 This file contains the list of changes made to pymonocypher.
 
 
+## 4.0.2.1
+
+2024 May 8
+
+* Upgraded Monocypher from 3.1.3 to 4.0.2.
+* Removed incremental SignatureVerify, which was removed from Monocypher.
+
+
 ## 3.1.3.2
 
 2023 Jun 7