diff --git a/.github/workflows/build-spidev.yml b/.github/workflows/build-spidev.yml
new file mode 100644
index 000000000..2605156b2
--- /dev/null
+++ b/.github/workflows/build-spidev.yml
@@ -0,0 +1,92 @@
+# SPDX-FileCopyrightText: 2026 The RISE Project
+# SPDX-License-Identifier: MIT
+---
+name: Build spidev wheels (riscv64)
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'spidev version/tag to build (git tag without leading v, e.g. 3.8)'
+        required: true
+        default: '3.8'
+  pull_request:
+    paths:
+      - '.github/workflows/build-spidev.yml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ inputs.version || '3.8' }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read  # to fetch code (actions/checkout)
+
+env:
+  SPIDEV_VERSION: ${{ inputs.version || '3.8' }}
+  MANYLINUX_RISCV64_IMAGE: quay.io/pypa/manylinux_2_39_riscv64
+  MUSLLINUX_RISCV64_IMAGE: quay.io/pypa/musllinux_1_2_riscv64
+
+jobs:
+  setup:
+    uses: $/.github/workflows/_setup.yml
+
+  build_wheels:
+    needs: [setup]
+    name: Build spidev ${{ inputs.version || '3.8' }} ${{ matrix.python }}-${{ matrix.libc }}_riscv64
+    runs-on: ubuntu-24.04-riscv
+    timeout-minutes: 60
+    strategy:
+      fail-fast: false
+      matrix:
+        python: ["cp312", "cp313", "cp314", "cp314t"]
+        libc: [manylinux, musllinux]
+
+    steps:
+      - name: Checkout spidev v${{ env.SPIDEV_VERSION }}
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          repository: doceme/py-spidev
+          ref: v${{ env.SPIDEV_VERSION }}
+          persist-credentials: false
+
+      - uses: pypa/cibuildwheel@1828c10ab37f080699c7b81cea34097c684a7074  # v4.2.0
+        env:
+          CIBW_ARCHS: riscv64
+          CIBW_BUILD: ${{ matrix.python }}-${{ matrix.libc }}_riscv64
+          CIBW_MANYLINUX_RISCV64_IMAGE: ${{ env.MANYLINUX_RISCV64_IMAGE }}
+          CIBW_MUSLLINUX_RISCV64_IMAGE: ${{ env.MUSLLINUX_RISCV64_IMAGE }}
+          # spidev_module.c pulls in linux/spi/spidev.h; manylinux already has
+          # it via glibc-devel, musllinux's Alpine base needs linux-headers.
+          CIBW_BEFORE_ALL_LINUX: (command -v apk && apk add linux-headers) || true
+          # Upstream ships no CI and no test suite at all (it's a thin ioctl
+          # wrapper around /dev/spidev*, which no CI runner has) - exercise the
+          # compiled extension and the real open()/ioctl error path instead.
+          CIBW_TEST_COMMAND: |
+            python3 - <<'PYEOF'
+            import spidev
+            assert spidev.__file__.endswith(".so"), spidev.__file__
+            assert spidev.__version__ == "${{ env.SPIDEV_VERSION }}", spidev.__version__
+            spi = spidev.SpiDev()
+            try:
+                spi.open_path("/dev/spidev-does-not-exist")
+            except OSError:
+                pass
+            else:
+                raise SystemExit("expected OSError for a non-existent spidev device")
+            PYEOF
+
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: spidev-${{ env.SPIDEV_VERSION }}-${{ matrix.python }}-${{ matrix.libc }}_riscv64
+          path: ./wheelhouse/*.whl
+          if-no-files-found: error
+
+  publish:
+    name: Publish spidev ${{ inputs.version || '3.8' }}
+    needs: [setup, build_wheels]
+    permissions:
+      contents: write
+      pull-requests: write
+    uses: $/.github/workflows/_publish-wheel.yml
+    with:
+      artifact-pattern: spidev-${{ inputs.version || '3.8' }}-*riscv64