diff --git a/.github/workflows/cibuildwheel.yml b/.github/workflows/cibuildwheel.yml
index 706aed3..1386e08 100644
--- a/.github/workflows/cibuildwheel.yml
+++ b/.github/workflows/cibuildwheel.yml
@@ -9,16 +9,15 @@ jobs:
     strategy:
       matrix:
         # macos-13 was an intel runner, macos-14 is apple silicon
-        os: [ubuntu-22.04, windows-2022, macos-14]
+        os: [ubuntu-22.04, ubuntu-22.04-arm, windows-2022, windows-11-arm, macos-14]
     env:
       # Seems to have trouble parsing our setup.py, thus:
       CIBW_PROJECT_REQUIRES_PYTHON: ">=3.10"
       # Install numpy with a wheel (do NOT compile it):
       CIBW_BEFORE_BUILD: "pip install --only-binary :all: -r requirements.txt"
-      # There are/were no numpy wheels for these:
-      CIBW_SKIP: cp3*-manylinux_i686 *-musllinux_*
-      # configure cibuildwheel to build native arch & aarch64 too
-      CIBW_ARCHS_LINUX: auto aarch64
+      # There are/were no numpy wheels for these.
+      # Windows ARM64 CPython is only available from 3.11 onwards.
+      CIBW_SKIP: cp3*-manylinux_i686 *-musllinux_* cp310-win_arm64
       # Quick test with C code using NumPy C API:
       CIBW_TEST_COMMAND: "python {package}/Tests/test_Cluster.py"
 
@@ -28,12 +27,6 @@ jobs:
           fetch-depth: 0  # Optional
           submodules: true  # Optional, use if you have submodules
 
-      - name: Set up QEMU
-        if: runner.os == 'Linux'
-        uses: docker/setup-qemu-action@v4
-        with:
-          platforms: all
-
       - name: Checkout tag/commit
         run: |
           git submodule update --init biopython
diff --git a/requirements.txt b/requirements.txt
index 1f6e134..40d5ea8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,5 +14,6 @@ numpy==1.14.5; python_version=='3.7'
 numpy==1.17.3; python_version=='3.8'
 numpy==1.21.0; python_version=='3.9'
 numpy==1.22.3; python_version=='3.10'
-numpy==1.23.3; python_version=='3.11'
-numpy==1.26.1; python_version=='3.12'
+# NumPy only has win_arm64 wheels from 2.3.0 onwards
+numpy==1.23.3; python_version=='3.11' and (sys_platform!='win32' or platform_machine!='ARM64')
+numpy==1.26.1; python_version=='3.12' and (sys_platform!='win32' or platform_machine!='ARM64')