diff --git a/.github/workflows/build-glum.yml b/.github/workflows/build-glum.yml
new file mode 100644
index 00000000000..b954feaca25
--- /dev/null
+++ b/.github/workflows/build-glum.yml
@@ -0,0 +1,150 @@
+# SPDX-FileCopyrightText: 2026 The RISE Project
+# SPDX-License-Identifier: MIT
+---
+# Based on the `build_wheels` job of
+# https://github.com/Quantco/glum/blob/v3.4.1/.github/workflows/build_wheels.yml
+name: Build glum wheels (riscv64)
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version glob to (re)build; empty builds every version of docs/packages/glum.yaml not released yet'
+        required: false
+        default: ''
+  pull_request:
+    branches: [main]
+    paths:
+      - '.github/workflows/build-glum.yml'
+      - 'docs/packages/glum.yaml'
+  push:
+    branches: [main]
+    paths:
+      - '.github/workflows/build-glum.yml'
+      - 'docs/packages/glum.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: glum
+      version: ${{ inputs.version }}
+
+  build_wheels:
+    needs: [setup]
+    if: needs.setup.outputs.versions != '[]'
+    name: Build glum ${{ matrix.version }} ${{ matrix.python }}-manylinux_riscv64
+    runs-on: ubuntu-24.04-riscv
+    timeout-minutes: 60
+    strategy:
+      fail-fast: false
+      matrix:
+        version: ${{ fromJSON(needs.setup.outputs.versions) }}
+        python: ["cp312", "cp313", "cp314", "cp314t"]
+
+    env:
+      GLUM_VERSION: ${{ matrix.version }}
+
+    steps:
+      - name: Checkout glum v${{ env.GLUM_VERSION }}
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          repository: Quantco/glum
+          ref: v${{ env.GLUM_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: ${{ env.MANYLINUX_RISCV64_IMAGE }}
+          # tabmat (a hard runtime dependency) is not yet ported to riscv64
+          # (tracked separately in docs/packages/tabmat.yaml); upstream's own
+          # cibuildwheel config sets test-requires but no test-command, so no
+          # wheel-import test runs there either. We match that and verify the
+          # build from the wheel contents alone, below.
+          CIBW_ENVIRONMENT: >-
+            PIP_EXTRA_INDEX_URL=https://pypi.riseproject.dev/simple/
+            PIP_ONLY_BINARY=numpy,scikit-learn
+
+      - name: Check wheel contents
+        run: |
+          python3 - wheelhouse/*.whl <<'EOF'
+          import sys, zipfile
+          for path in sys.argv[1:]:
+              names = zipfile.ZipFile(path).namelist()
+              for ext in ("_functions", "_cd_fast"):
+                  assert any(n.startswith(f"glum/{ext}.") and n.endswith(".so") for n in names), (path, ext, names)
+              licenses = {n.rsplit("/", 1)[-1] for n in names
+                          if ".dist-info/licenses/" in n} - {""}
+              assert licenses == {"LICENSE", "NOTICE"}, (path, licenses)
+              print(path, "ok")
+          EOF
+
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: glum-${{ env.GLUM_VERSION }}-${{ matrix.python }}-manylinux_riscv64
+          path: ./wheelhouse/*.whl
+          if-no-files-found: error
+
+  gpl_sources:
+    needs: [setup]
+    if: needs.setup.outputs.versions != '[]'
+    strategy:
+      fail-fast: false
+      matrix:
+        version: ${{ fromJSON(needs.setup.outputs.versions) }}
+    name: Collect GPL sources
+    runs-on: ubuntu-24.04-riscv
+
+    env:
+      GLUM_VERSION: ${{ matrix.version }}
+
+    steps:
+      - name: Checkout python-wheels
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          persist-credentials: false
+
+      # -fopenmp above links libgomp, which auditwheel vendors into glum.libs/.
+      - uses: ./actions/collect-gpl-sources
+        with:
+          image: ${{ env.MANYLINUX_RISCV64_IMAGE }}
+          packages: gcc
+          output: gpl-sources.tar
+
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: glum-${{ env.GLUM_VERSION }}-gpl-sources
+          path: gpl-sources.tar
+          if-no-files-found: error
+
+  publish:
+    name: Publish glum ${{ matrix.version }}
+    needs: [setup, build_wheels, gpl_sources]
+    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: ${{ secrets.RISEPROJECT_APP_PRIVATE_KEY }}
+    with:
+      artifact-pattern: glum-${{ matrix.version }}-*-manylinux_riscv64
+      gpl-sources-artifact: glum-${{ matrix.version }}-gpl-sources
+      gpl-sources-description: gcc
diff --git a/docs/packages/glum.yaml b/docs/packages/glum.yaml
new file mode 100644
index 00000000000..78df2db30ec
--- /dev/null
+++ b/docs/packages/glum.yaml
@@ -0,0 +1,5 @@
+package-name: glum
+source-code: https://github.com/Quantco/glum
+license: BSD-3-Clause
+versions:
+- version: 3.4.1