diff --git a/.github/workflows/build-cql2.yml b/.github/workflows/build-cql2.yml
new file mode 100644
index 000000000000..f2d283a4c56c
--- /dev/null
+++ b/.github/workflows/build-cql2.yml
@@ -0,0 +1,122 @@
+# SPDX-FileCopyrightText: 2026 The RISE Project
+# SPDX-License-Identifier: MIT
+---
+# This workflow is based on the `linux`/`musllinux` jobs of
+# https://github.com/developmentseed/cql2-rs/blob/cql2-v0.6.0/.github/workflows/pypi.yml
+name: Build cql2 wheels (riscv64)
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version glob to (re)build; empty builds every version of docs/packages/cql2.yaml not released yet'
+        required: false
+        default: ''
+  pull_request:
+    branches: [main]
+    paths:
+      - '.github/workflows/build-cql2.yml'
+      - 'docs/packages/cql2.yaml'
+  push:
+    branches: [main]
+    paths:
+      - '.github/workflows/build-cql2.yml'
+      - 'docs/packages/cql2.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
+  MUSLLINUX_RISCV64_IMAGE: quay.io/pypa/musllinux_1_2_riscv64
+
+jobs:
+  setup:
+    uses: $/.github/workflows/_setup.yml
+    with:
+      package: cql2
+      version: ${{ inputs.version }}
+
+  build_wheels:
+    needs: [setup]
+    if: needs.setup.outputs.versions != '[]'
+    name: Build cql2 ${{ matrix.version }} cp312-abi3-${{ matrix.platform }}_riscv64
+    runs-on: ubuntu-24.04-riscv
+    timeout-minutes: 60
+    strategy:
+      fail-fast: false
+      matrix:
+        version: ${{ fromJSON(needs.setup.outputs.versions) }}
+        platform: ["manylinux", "musllinux"]
+
+    env:
+      CQL2_VERSION: ${{ matrix.version }}
+
+    steps:
+      - name: Checkout cql2-rs cql2-v${{ env.CQL2_VERSION }}
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          repository: developmentseed/cql2-rs
+          ref: cql2-v${{ env.CQL2_VERSION }}
+          persist-credentials: false
+
+      - name: Build wheels
+        uses: pypa/cibuildwheel@1828c10ab37f080699c7b81cea34097c684a7074  # v4.2.0
+        with:
+          output-dir: wheelhouse/
+        env:
+          # pyo3's abi3-py310 feature is on unconditionally (python/Cargo.toml),
+          # so one abi3 wheel serves every interpreter in our matrix; upstream
+          # ships only a cp310-abi3 wheel, no free-threaded (cp314t) variant,
+          # so there is no separate free-threaded job either. Built on cp312
+          # (our floor) and re-tested on cp313/cp314 via cibuildwheel's
+          # find_compatible_wheel logic.
+          CIBW_BUILD: >-
+            cp312-${{ matrix.platform }}_riscv64 cp313-${{ matrix.platform }}_riscv64
+            cp314-${{ matrix.platform }}_riscv64
+          CIBW_MANYLINUX_RISCV64_IMAGE: ${{ env.MANYLINUX_RISCV64_IMAGE }}
+          CIBW_MUSLLINUX_RISCV64_IMAGE: ${{ env.MUSLLINUX_RISCV64_IMAGE }}
+          # cql2's pyproject.toml ships no [tool.cibuildwheel], so the Rust
+          # toolchain its maturin backend needs is installed in-container.
+          CIBW_BEFORE_ALL_LINUX: >-
+            curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+          CIBW_ENVIRONMENT_LINUX: PATH="$PATH:$HOME/.cargo/bin"
+          CIBW_TEST_REQUIRES: pytest
+          # python/tests' conftest.py resolves fixtures via
+          # Path(__file__).parents[2] / "examples", i.e. two levels above
+          # python/tests -- staging examples/ alongside it keeps that path valid.
+          CIBW_TEST_SOURCES: python/tests examples
+          # No python-source in pyproject.toml, so maturin ships an
+          # auto-generated cql2/__init__.py shim around the compiled
+          # cql2/cql2 submodule -- probe that submodule before running
+          # upstream's own tests.
+          CIBW_TEST_COMMAND: >-
+            python -c "import cql2.cql2 as m; assert m.__file__.endswith('.so'), m.__file__" &&
+            python -m pytest -v python/tests
+
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: cql2-${{ env.CQL2_VERSION }}-cp312-abi3-${{ matrix.platform }}_riscv64
+          path: wheelhouse/*.whl
+          if-no-files-found: error
+
+  publish:
+    name: Publish cql2 ${{ 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: ${{ secrets.RISEPROJECT_APP_PRIVATE_KEY }}
+    with:
+      artifact-pattern: cql2-${{ matrix.version }}-*_riscv64
diff --git a/docs/packages/cql2.yaml b/docs/packages/cql2.yaml
new file mode 100644
index 000000000000..90bdd9291737
--- /dev/null
+++ b/docs/packages/cql2.yaml
@@ -0,0 +1,5 @@
+package-name: cql2
+source-code: https://github.com/developmentseed/cql2-rs
+license: MIT
+versions:
+- version: 0.6.0