diff --git a/.github/workflows/build-histomicstk.yml b/.github/workflows/build-histomicstk.yml
new file mode 100644
index 000000000000..c26f01947e71
--- /dev/null
+++ b/.github/workflows/build-histomicstk.yml
@@ -0,0 +1,115 @@
+# SPDX-FileCopyrightText: 2026 The RISE Project
+# SPDX-License-Identifier: MIT
+---
+# This workflow is based on the `build_wheels` job of
+# https://github.com/DigitalSlideArchive/HistomicsTK/blob/v1.4.0/.github/workflows/ci.yml
+name: Build histomicstk wheels (riscv64)
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version glob to (re)build; empty builds every version of docs/packages/histomicstk.yaml not released yet'
+        required: false
+        default: ''
+  pull_request:
+    branches: [main]
+    paths:
+      - '.github/workflows/build-histomicstk.yml'
+      - 'docs/packages/histomicstk.yaml'
+  push:
+    branches: [main]
+    paths:
+      - '.github/workflows/build-histomicstk.yml'
+      - 'docs/packages/histomicstk.yaml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read  # to fetch code (actions/checkout)
+
+env:
+  MANYLINUX_RISCV64_IMAGE: quay.io/pypa/manylinux_2_39_riscv64
+
+jobs:
+  setup:
+    uses: $/.github/workflows/_setup.yml
+    with:
+      package: histomicstk
+      version: ${{ inputs.version }}
+
+  build_wheels:
+    needs: [setup]
+    if: needs.setup.outputs.versions != '[]'
+    name: Build histomicstk ${{ matrix.version }} ${{ matrix.python }}-manylinux_riscv64
+    runs-on: ubuntu-24.04-riscv
+    timeout-minutes: 90
+    strategy:
+      fail-fast: false
+      matrix:
+        version: ${{ fromJSON(needs.setup.outputs.versions) }}
+        python: ["cp312", "cp313", "cp314", "cp314t"]
+
+    env:
+      HISTOMICSTK_VERSION: ${{ matrix.version }}
+
+    steps:
+      - name: Checkout histomicstk v${{ env.HISTOMICSTK_VERSION }}
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          repository: DigitalSlideArchive/HistomicsTK
+          ref: v${{ env.HISTOMICSTK_VERSION }}
+          persist-credentials: false
+
+      - uses: pypa/cibuildwheel@1828c10ab37f080699c7b81cea34097c684a7074  # v4.2.0
+        with:
+          output-dir: wheelhouse/
+          only: ${{ matrix.python }}-manylinux_riscv64
+        env:
+          CIBW_MANYLINUX_RISCV64_IMAGE: ${{ env.MANYLINUX_RISCV64_IMAGE }}
+
+      - name: Check wheel contents
+        run: |
+          python3 - wheelhouse/*.whl <<'EOF'
+          import sys, zipfile
+          path = sys.argv[1]
+          names = zipfile.ZipFile(path).namelist()
+          exts = {n.rsplit("/", 1)[-1].split(".")[0] for n in names if n.endswith(".so")}
+          expected = {
+              "_trace_object_boundaries_cython",
+              "_max_clustering_cython",
+              "_compute_marginal_glcm_probs_cython",
+          }
+          assert expected <= exts, exts
+          licences = {n.split(".dist-info/licenses/", 1)[1] for n in names
+                      if ".dist-info/licenses/" in n and not n.endswith("/")}
+          # No license_files in setup.py, so setuptools' default
+          # LICEN[CS]E*/NOTICE*/AUTHORS* glob ships all three root files;
+          # NOTICE is required by Apache-2.0 section 4(d).
+          assert licences == {"LICENSE", "NOTICE", "AUTHORS.rst"}, licences
+          EOF
+
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: histomicstk-${{ env.HISTOMICSTK_VERSION }}-${{ matrix.python }}-manylinux_riscv64
+          path: wheelhouse/*.whl
+          if-no-files-found: error
+
+  publish:
+    name: Publish histomicstk ${{ matrix.version }}
+    needs: [setup, build_wheels]
+    if: needs.setup.outputs.versions != '[]'
+    strategy:
+      fail-fast: false
+      matrix:
+        version: ${{ fromJSON(needs.setup.outputs.versions) }}
+    permissions:
+      contents: write
+      pull-requests: write
+    uses: $/.github/workflows/_publish-wheel.yml
+    secrets:
+      app-private-key: ${{ secrets.RISEPROJECT_APP_PRIVATE_KEY }}
+    with:
+      artifact-pattern: histomicstk-${{ matrix.version }}-*-manylinux_riscv64
diff --git a/docs/packages/histomicstk.yaml b/docs/packages/histomicstk.yaml
new file mode 100644
index 000000000000..926970810029
--- /dev/null
+++ b/docs/packages/histomicstk.yaml
@@ -0,0 +1,5 @@
+package-name: histomicstk
+source-code: https://github.com/DigitalSlideArchive/HistomicsTK
+license: Apache-2.0
+versions:
+- version: 1.4.0