diff --git a/.github/workflows/build-ray-haproxy.yml b/.github/workflows/build-ray-haproxy.yml
new file mode 100644
index 00000000000..4808bf58c06
--- /dev/null
+++ b/.github/workflows/build-ray-haproxy.yml
@@ -0,0 +1,245 @@
+# SPDX-FileCopyrightText: 2026 The RISE Project
+# SPDX-License-Identifier: MIT
+---
+# This workflow is based on:
+#   https://github.com/ray-project/ray-haproxy/blob/v2.8.25/.github/workflows/release.yml
+name: Build ray-haproxy wheels (riscv64)
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version glob to (re)build; empty builds every version of docs/packages/ray-haproxy.yaml not released yet'
+        required: false
+        default: ''
+  pull_request:
+    branches: [main]
+    paths:
+      - '.github/workflows/build-ray-haproxy.yml'
+      - 'docs/packages/ray-haproxy.yaml'
+      - 'patches/ray-haproxy/**'
+  push:
+    branches: [main]
+    paths:
+      - '.github/workflows/build-ray-haproxy.yml'
+      - 'docs/packages/ray-haproxy.yaml'
+      - 'patches/ray-haproxy/**'
+
+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: ray-haproxy
+      version: ${{ inputs.version }}
+
+  build_wheel:
+    needs: [setup]
+    if: needs.setup.outputs.versions != '[]'
+    strategy:
+      fail-fast: false
+      matrix:
+        version: ${{ fromJSON(needs.setup.outputs.versions) }}
+    name: Build ray-haproxy ${{ matrix.version }} py3-none-manylinux_riscv64
+    runs-on: ubuntu-24.04-riscv
+    timeout-minutes: 60
+
+    env:
+      RAY_HAPROXY_VERSION: ${{ matrix.version }}
+      HAPROXY_VERSION: ${{ matrix.version }}
+
+    steps:
+      - name: Checkout ray-haproxy v${{ matrix.version }}
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          repository: ray-project/ray-haproxy
+          ref: v${{ env.RAY_HAPROXY_VERSION }}
+          persist-credentials: false
+
+      - name: Checkout python-wheels
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          path: python-wheels
+          persist-credentials: false
+
+      - name: Apply patches
+        run: git apply -v python-wheels/patches/ray-haproxy/${{ env.RAY_HAPROXY_VERSION }}/*.patch
+
+      # Upstream's own build step, run against manylinux_2_39_riscv64 instead of
+      # manylinux2014 (which has no riscv64 image), then packaged the same way
+      # its release.yml does outside the container.
+      - name: Build HAProxy and package the wheel
+        run: |
+          docker run --rm \
+            -v "$(pwd)":/workspace \
+            --workdir /workspace \
+            -e HAPROXY_VERSION \
+            -e OUTPUT_DIR=/workspace/dist \
+            "${{ env.MANYLINUX_RISCV64_IMAGE }}" \
+            bash -c '
+              set -euxo pipefail
+              ./ci/build/build-haproxy-dist.sh
+              mkdir -p ray_haproxy/bin/lib
+              tar -xzf dist/haproxy-linux-riscv64.tar.gz -C ray_haproxy/bin/
+              /opt/python/cp312-cp312/bin/python -m pip install -q wheel setuptools
+              /opt/python/cp312-cp312/bin/python setup.py bdist_wheel --plat-name manylinux_2_39_riscv64
+            '
+
+      - name: Verify the wheel ships the riscv64 binary
+        run: |
+          python3 - dist/*.whl <<'EOF'
+          import sys, zipfile
+          with zipfile.ZipFile(sys.argv[1]) as zf:
+              names = zf.namelist()
+              print("\n".join(names))
+              binary = next(n for n in names if n.endswith("ray_haproxy/bin/haproxy"))
+              header = zf.read(binary)[:20]
+              assert header[:4] == b"\x7fELF", header
+              assert header[18] == 0xF3, header  # e_machine == EM_RISCV
+              libs = [n for n in names if "ray_haproxy/bin/lib/" in n and not n.endswith("lib/")]
+              assert libs, "no vendored shared libraries in the wheel"
+              licenses = sorted(n.rsplit("/", 1)[-1] for n in names if ".data/data/" in n)
+              assert licenses == ["LICENSE", "THIRD_PARTY_LICENSES"], licenses
+          EOF
+
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: ray-haproxy-${{ env.RAY_HAPROXY_VERSION }}-py3-none-manylinux_riscv64
+          path: dist/*.whl
+          if-no-files-found: error
+
+  test_wheel:
+    name: Test ray-haproxy ${{ matrix.version }} on Python ${{ matrix.python-version }}
+    needs: [setup, build_wheel]
+    if: needs.setup.outputs.versions != '[]'
+    runs-on: ubuntu-24.04-riscv
+    timeout-minutes: 30
+    strategy:
+      fail-fast: false
+      matrix:
+        version: ${{ fromJSON(needs.setup.outputs.versions) }}
+        # Upstream tests 3.9-3.12; trimmed to the interpreters this registry targets.
+        python-version: ['3.12', '3.13', '3.14']
+
+    env:
+      RAY_HAPROXY_VERSION: ${{ matrix.version }}
+
+    steps:
+      # Checked out beside the workspace root (not into it) so the package's
+      # own ray_haproxy/ source directory can't shadow the installed wheel
+      # when the smoke test below imports ray_haproxy (gotcha 187).
+      - name: Checkout ray-haproxy v${{ matrix.version }} (tests)
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          repository: ray-project/ray-haproxy
+          ref: v${{ env.RAY_HAPROXY_VERSION }}
+          path: ray-haproxy-src
+          persist-credentials: false
+
+      - name: Checkout python-wheels
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          path: python-wheels
+          persist-credentials: false
+
+      - name: Apply patches
+        run: git -C ray-haproxy-src apply -v "$GITHUB_WORKSPACE"/python-wheels/patches/ray-haproxy/${{ env.RAY_HAPROXY_VERSION }}/*.patch
+
+      - name: Download wheel
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c  # v8.0.1
+        with:
+          name: ray-haproxy-${{ env.RAY_HAPROXY_VERSION }}-py3-none-manylinux_riscv64
+          path: wheelhouse
+
+      - name: Install Python
+        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d  # v10.0.1
+        with:
+          python-version: ${{ matrix.python-version }}
+          activate-environment: true
+          enable-cache: false
+
+      - name: Install the wheel
+        run: uv pip install --reinstall --no-index --find-links wheelhouse ray-haproxy
+
+      - name: Run upstream's smoke test
+        run: |
+          python -c "
+          from ray_haproxy import get_haproxy_binary
+          import subprocess, sys
+          binary = get_haproxy_binary()
+          print(f'Python {sys.version}')
+          print(f'Binary: {binary}')
+          result = subprocess.run([binary, '-v'], capture_output=True, text=True)
+          print(result.stdout or result.stderr)
+          assert result.returncode == 0, f'haproxy -v failed: {result.returncode}'
+          print('OK')
+          "
+
+      # Runs upstream's own vendoring checker (RPATH, ldd resolution, ELF
+      # sanity) directly on real riscv64 hardware, in place of upstream's
+      # `verify` job, which spins up six distro containers, several of
+      # which (amazonlinux, rockylinux:9) have no riscv64 image to run.
+      - name: Run upstream's vendoring verification
+        run: |
+          BINARY="$(python -c 'from ray_haproxy import get_haproxy_binary; print(get_haproxy_binary())')"
+          chmod +x ray-haproxy-src/ci/verify-vendoring.sh
+          ray-haproxy-src/ci/verify-vendoring.sh "$BINARY" "$(dirname "$BINARY")/lib"
+
+  gpl_sources:
+    needs: [setup]
+    if: needs.setup.outputs.versions != '[]'
+    strategy:
+      fail-fast: false
+      matrix:
+        version: ${{ fromJSON(needs.setup.outputs.versions) }}
+    name: Collect GPL sources for ray-haproxy ${{ matrix.version }}
+    runs-on: ubuntu-24.04-riscv
+
+    env:
+      RAY_HAPROXY_VERSION: ${{ matrix.version }}
+
+    steps:
+      - name: Checkout python-wheels
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          persist-credentials: false
+
+      - uses: ./actions/collect-gpl-sources
+        with:
+          image: ${{ env.MANYLINUX_RISCV64_IMAGE }}
+          packages: gcc libxcrypt
+          output: gpl-sources.tar
+
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: ray-haproxy-${{ env.RAY_HAPROXY_VERSION }}-gpl-sources
+          path: gpl-sources.tar
+          if-no-files-found: error
+
+  publish:
+    name: Publish ray-haproxy ${{ matrix.version }}
+    needs: [setup, build_wheel, test_wheel, 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: ${{ secrets.RISEPROJECT_APP_PRIVATE_KEY }}
+    with:
+      artifact-pattern: ray-haproxy-${{ matrix.version }}-py3-none-manylinux_riscv64
+      gpl-sources-artifact: ray-haproxy-${{ matrix.version }}-gpl-sources
+      gpl-sources-description: gcc and the copyleft libraries bundled in the wheel
diff --git a/docs/packages/ray-haproxy.yaml b/docs/packages/ray-haproxy.yaml
new file mode 100644
index 00000000000..a9ae875bac0
--- /dev/null
+++ b/docs/packages/ray-haproxy.yaml
@@ -0,0 +1,5 @@
+package-name: ray-haproxy
+source-code: https://github.com/ray-project/ray-haproxy
+license: GNU General Public License v2 (GPLv2)
+versions:
+- version: 2.8.25
diff --git a/patches/ray-haproxy/2.8.25/0001-build-haproxy-dist-add-riscv64-and-build-against-PC.patch b/patches/ray-haproxy/2.8.25/0001-build-haproxy-dist-add-riscv64-and-build-against-PC.patch
new file mode 100644
index 00000000000..b6d2832c7b9
--- /dev/null
+++ b/patches/ray-haproxy/2.8.25/0001-build-haproxy-dist-add-riscv64-and-build-against-PC.patch
@@ -0,0 +1,83 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ludovic Henry <git@ludovic.dev>
+Date: Mon, 28 Sep 2026 00:00:00 +0000
+Subject: [PATCH] ci/build: add riscv64 and build against PCRE2 there
+
+build-haproxy-dist.sh's arch normalisation only knows x86_64/aarch64/arm64,
+so it exits with "Unsupported architecture: riscv64" before doing anything:
+
+    Unsupported architecture: riscv64
+
+Add a riscv64 case. Its dependency install and HAProxy `make` flags also
+assume PCRE1 (`pcre-devel`, `USE_PCRE=1`), which manylinux2014 (CentOS 7)
+carries; manylinux_2_39_riscv64 (Rocky 10) dropped the legacy PCRE1 package
+and only ships `pcre2-devel`. Branch on the riscv64 arch label to install
+`pcre2-devel` and build with `USE_PCRE2=1 USE_PCRE2_JIT=1` instead, leaving
+the x86_64/aarch64 codepath untouched.
+
+Rocky 10 also splits `FindBin.pm` out of its base Perl into `perl-FindBin`,
+which OpenSSL's `Configure` needs and manylinux2014's Perl carries without
+a separate package:
+
+    Can't locate FindBin.pm in @INC (you may need to install the FindBin module) ... at .../openssl-3.0.15/Configure line 15.
+
+Rocky 10 splits the `lib` pragma out the same way, into `perl-lib`, and
+`Configure` needs that too (it's `use`d two lines later than `FindBin`, so
+this only surfaced once the FindBin install let Configure get further):
+
+    Can't locate lib.pm in @INC (you may need to install the lib module) ... at .../openssl-3.0.15/Configure line 16.
+
+Install both alongside `perl-IPC-Cmd` on riscv64.
+
+Upstream-Status: Inappropriate [manylinux2014 (x86_64/aarch64) still has pcre-devel; this is a difference between manylinux images, not something upstream's existing targets need]
+
+Signed-off-by: Ludovic Henry <git@ludovic.dev>
+---
+diff --git a/ci/build/build-haproxy-dist.sh b/ci/build/build-haproxy-dist.sh
+--- a/ci/build/build-haproxy-dist.sh
++++ b/ci/build/build-haproxy-dist.sh
+@@ -62,6 +62,7 @@
+     x86_64)  ARCH_LABEL="x86_64" ;;
+     aarch64) ARCH_LABEL="arm64" ;;
+     arm64)   ARCH_LABEL="arm64" ;;  # macOS (future)
++    riscv64) ARCH_LABEL="riscv64" ;;
+     *)       echo "Unsupported architecture: $ARCH"; exit 1 ;;
+ esac
+
+@@ -91,7 +92,14 @@
+ #   lua-devel     — for HAProxy USE_LUA=1 (Lua 5.1 on CentOS 7)
+ # ---------------------------------------------------------------------------
+ echo "==> Installing build dependencies"
+-yum install -y perl-IPC-Cmd pcre-devel zlib-devel readline-devel 2>/dev/null
++if [ "$ARCH_LABEL" = "riscv64" ]; then
++    # manylinux_2_39_riscv64 (Rocky 10) dropped the legacy PCRE1 package;
++    # only pcre2-devel is available there. HAProxy's USE_PCRE2 build option
++    # is the equivalent for that library.
++    yum install -y perl-IPC-Cmd perl-FindBin perl-lib pcre2-devel zlib-devel readline-devel 2>/dev/null
++else
++    yum install -y perl-IPC-Cmd pcre-devel zlib-devel readline-devel 2>/dev/null
++fi
+
+ # ---------------------------------------------------------------------------
+ # 1. Build OpenSSL from source
+@@ -159,13 +167,19 @@
+ tar -xzf "$BUILD_DIR/haproxy.tar.gz" -C "$BUILD_DIR" --strip-components=1
+
+ echo "==> Compiling HAProxy"
++# manylinux_2_39_riscv64 only has pcre2-devel (see the riscv64 branch above),
++# so build against PCRE2 there instead of PCRE1.
++PCRE_MAKE_VARS=(USE_PCRE=1)
++if [ "$ARCH_LABEL" = "riscv64" ]; then
++    PCRE_MAKE_VARS=(USE_PCRE2=1 USE_PCRE2_JIT=1)
++fi
+ make -C "$BUILD_DIR" \
+     TARGET=linux-glibc \
+     USE_OPENSSL=1 \
+     SSL_INC="$DEPS_DIR/include" \
+     SSL_LIB="$OPENSSL_LIB_DIR" \
+     USE_ZLIB=1 \
+-    USE_PCRE=1 \
++    "${PCRE_MAKE_VARS[@]}" \
+     USE_LUA=1 \
+     LUA_INC="$DEPS_DIR/include" \
+     LUA_LIB="$DEPS_DIR/lib" \
diff --git a/patches/ray-haproxy/2.8.25/0002-verify-vendoring-recognise-riscv64-binaries.patch b/patches/ray-haproxy/2.8.25/0002-verify-vendoring-recognise-riscv64-binaries.patch
new file mode 100644
index 00000000000..7a17d711c4e
--- /dev/null
+++ b/patches/ray-haproxy/2.8.25/0002-verify-vendoring-recognise-riscv64-binaries.patch
@@ -0,0 +1,28 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ludovic Henry <git@ludovic.dev>
+Date: Mon, 28 Sep 2026 00:00:00 +0000
+Subject: [PATCH] ci: verify-vendoring: recognise riscv64 binaries
+
+The ELF sanity check only matches `file`'s output for x86-64 and aarch64, so
+it fails a riscv64 binary that is otherwise fine:
+
+    FAIL: Unexpected binary type: ELF 64-bit LSB pie executable, UCB RISC-V, ...
+
+Add a branch for `file`'s "RISC-V" architecture string.
+
+Upstream-Status: Inappropriate [only needed once a riscv64 leg exists to call this script; upstream's own x86_64/aarch64 legs never hit this path]
+
+Signed-off-by: Ludovic Henry <git@ludovic.dev>
+---
+diff --git a/ci/verify-vendoring.sh b/ci/verify-vendoring.sh
+--- a/ci/verify-vendoring.sh
++++ b/ci/verify-vendoring.sh
+@@ -128,6 +128,8 @@
+     pass "Binary is ELF 64-bit x86-64"
+ elif echo "$FILE_TYPE" | grep -q "ELF 64-bit.*aarch64"; then
+     pass "Binary is ELF 64-bit aarch64"
++elif echo "$FILE_TYPE" | grep -q "ELF 64-bit.*RISC-V"; then
++    pass "Binary is ELF 64-bit RISC-V"
+ else
+     fail "Unexpected binary type: $FILE_TYPE"
+ fi
diff --git a/patches/ray-haproxy/2.8.25/0003-THIRD_PARTY_LICENSES-note-PCRE2-on-riscv64.patch b/patches/ray-haproxy/2.8.25/0003-THIRD_PARTY_LICENSES-note-PCRE2-on-riscv64.patch
new file mode 100644
index 00000000000..14edc099aa5
--- /dev/null
+++ b/patches/ray-haproxy/2.8.25/0003-THIRD_PARTY_LICENSES-note-PCRE2-on-riscv64.patch
@@ -0,0 +1,28 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ludovic Henry <git@ludovic.dev>
+Date: Mon, 28 Sep 2026 00:00:00 +0000
+Subject: [PATCH] THIRD_PARTY_LICENSES: note PCRE2 on riscv64
+
+The riscv64 build links PCRE2 (previous patch), not the classic PCRE1 this
+file's "PCRE" entry names and links to (sourceforge.net/projects/pcre,
+pcre.org). Both share the same BSD-style licence text already quoted here,
+but point the Source line at PCRE2's own repo too so the notice matches what
+the riscv64 wheel actually vendors.
+
+Upstream-Status: Inappropriate [only the riscv64 build in this fork links PCRE2; upstream's own x86_64/aarch64 wheels still vendor PCRE1]
+
+Signed-off-by: Ludovic Henry <git@ludovic.dev>
+---
+diff --git a/THIRD_PARTY_LICENSES b/THIRD_PARTY_LICENSES
+--- a/THIRD_PARTY_LICENSES
++++ b/THIRD_PARTY_LICENSES
+@@ -33,7 +33,9 @@
+ PCRE (Perl Compatible Regular Expressions)
+ -------------------------------------------
+ License: BSD License
++Note:    the riscv64 wheel vendors PCRE2 instead; same licence.
+ Source:  https://sourceforge.net/projects/pcre/
++         https://github.com/PCRE2Project/pcre2 (PCRE2, riscv64)
+          https://www.pcre.org/
+
+ Redistribution and use in source and binary forms, with or without
diff --git a/patches/ray-haproxy/2.8.25/0004-build-haproxy-dist-link-above-mmap_min_addr-on-riscv64.patch b/patches/ray-haproxy/2.8.25/0004-build-haproxy-dist-link-above-mmap_min_addr-on-riscv64.patch
new file mode 100644
index 00000000000..f7f72b8f3df
--- /dev/null
+++ b/patches/ray-haproxy/2.8.25/0004-build-haproxy-dist-link-above-mmap_min_addr-on-riscv64.patch
@@ -0,0 +1,57 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ludovic Henry <git@ludovic.dev>
+Date: Thu, 1 Oct 2026 00:00:00 +0000
+Subject: [PATCH] ci/build: link haproxy above mmap_min_addr on riscv64
+
+The staged binary is killed with SIGSEGV the first time the script runs
+it, with no output from HAProxy or from the dynamic linker:
+
+    Segmentation fault      LD_LIBRARY_PATH="$STAGE_DIR/lib" "$STAGE_DIR/haproxy" -v
+
+HAProxy's Makefile links a non-PIE executable, and GNU ld's riscv64
+default linker script places its first PT_LOAD at 0x10000 (x86_64 and
+aarch64 use 0x400000). `patchelf --set-rpath '$ORIGIN/lib'` has to grow
+the program headers of an ET_EXEC it cannot relocate, so it maps them in
+a new segment just below the old base, under 0x10000 -- which is the
+kernel's vm.mmap_min_addr on the riscv64 runners. execve then fails past
+its point of no return and the process dies before ld.so's first
+instruction: LD_DEBUG=all writes nothing and LD_DEBUG_OUTPUT is never
+even created, and ldd (which asks ld.so to load the binary) reports "not
+a dynamic executable" for the patchelf'd file. The vendored libraries
+play no part in it: the crash is identical whether Rocky 10's OpenSSL
+3.5.5 or the OpenSSL 3.0.15 built here is vendored.
+
+Pass `-Wl,-Ttext-segment=0x200000` through HAProxy's ADDLIB link hook on
+riscv64, so patchelf's extra segment still lands above mmap_min_addr, as
+it already does on x86_64/aarch64 with their higher default base.
+
+Upstream-Status: Inappropriate [riscv64-only: x86_64/aarch64 link at 0x400000, so patchelf's prepended segment never drops below mmap_min_addr there]
+
+Signed-off-by: Ludovic Henry <git@ludovic.dev>
+---
+diff --git a/ci/build/build-haproxy-dist.sh b/ci/build/build-haproxy-dist.sh
+--- a/ci/build/build-haproxy-dist.sh
++++ b/ci/build/build-haproxy-dist.sh
+@@ -173,6 +173,14 @@ PCRE_MAKE_VARS=(USE_PCRE=1)
+ if [ "$ARCH_LABEL" = "riscv64" ]; then
+     PCRE_MAKE_VARS=(USE_PCRE2=1 USE_PCRE2_JIT=1)
+ fi
++# riscv64's default non-PIE link base is 0x10000, which is also the kernel's
++# vm.mmap_min_addr: the program header segment `patchelf --set-rpath` prepends
++# below it further down can't be mapped, and execve kills the binary with
++# SIGSEGV before ld.so runs. Link it higher, like x86_64/aarch64 already are.
++LINK_MAKE_VARS=()
++if [ "$ARCH_LABEL" = "riscv64" ]; then
++    LINK_MAKE_VARS=(ADDLIB=-Wl,-Ttext-segment=0x200000)
++fi
+ make -C "$BUILD_DIR" \
+     TARGET=linux-glibc \
+     USE_OPENSSL=1 \
+@@ -184,6 +192,7 @@ make -C "$BUILD_DIR" \
+     LUA_INC="$DEPS_DIR/include" \
+     LUA_LIB="$DEPS_DIR/lib" \
+     USE_PROMEX=1 \
++    "${LINK_MAKE_VARS[@]}" \
+     -j"$(nproc)"
+ 
+ # ---------------------------------------------------------------------------
diff --git a/patches/ray-haproxy/2.8.25/0005-build-haproxy-dist-vendor-our-own-openssl-on-riscv64.patch b/patches/ray-haproxy/2.8.25/0005-build-haproxy-dist-vendor-our-own-openssl-on-riscv64.patch
new file mode 100644
index 00000000000..97ae66eec84
--- /dev/null
+++ b/patches/ray-haproxy/2.8.25/0005-build-haproxy-dist-vendor-our-own-openssl-on-riscv64.patch
@@ -0,0 +1,54 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ludovic Henry <git@ludovic.dev>
+Date: Thu, 1 Oct 2026 00:00:00 +0000
+Subject: [PATCH] ci/build: vendor our own OpenSSL on riscv64
+
+collect_deps resolves the binary's NEEDED entries with a plain ldd, run
+before patchelf gives it an RPATH. On manylinux_2_39_riscv64 that finds
+Rocky 10's own OpenSSL (3.5.5) on the default loader path and vendors it:
+
+    Vendoring: libssl.so.3 (/lib64/lp64d/libssl.so.3)
+    Vendoring: libcrypto.so.3 (/lib64/lp64d/libcrypto.so.3)
+
+manylinux2014 has no libssl.so.3, so on x86_64/aarch64 ldd reports it
+"not found" and the "vendor the OpenSSL .so files we built from source"
+fallback that follows ships the 3.0.15 HAProxy was compiled and linked
+against. On riscv64 that fallback skips both sonames because Rocky 10's
+copies are already in lib/.
+
+Point that ldd walk at the OpenSSL built here, on riscv64 only. Keep it
+scoped to the collect_deps call: exported for the rest of the script,
+it also reaches binutils, whose readelf links libcurl through
+libdebuginfod, and Rocky 10's libcurl needs a newer OpenSSL than 3.0.15
+exports, so every later readelf fails to start:
+
+    readelf: .../lib/libssl.so.3: version `OPENSSL_3.2.0' not found (required by /lib64/lp64d/libcurl.so.4)
+
+which silently turned the script's hardening checks into "NO".
+
+Upstream-Status: Inappropriate [manylinux2014 (x86_64/aarch64) has no libssl.so.3 on the default loader path, so upstream's targets already vendor the OpenSSL they build]
+
+Signed-off-by: Ludovic Henry <git@ludovic.dev>
+---
+diff --git a/ci/build/build-haproxy-dist.sh b/ci/build/build-haproxy-dist.sh
+--- a/ci/build/build-haproxy-dist.sh
++++ b/ci/build/build-haproxy-dist.sh
+@@ -244,7 +244,17 @@ collect_deps() {
+     done
+ }
+ 
+-collect_deps "$STAGE_DIR/haproxy"
++if [ "$ARCH_LABEL" = "riscv64" ]; then
++    # manylinux_2_39_riscv64 (Rocky 10) ships its own libssl.so.3/libcrypto.so.3
++    # on the default loader path, which manylinux2014 doesn't, so a plain ldd
++    # would vendor Rocky's OpenSSL instead of the one built above. Scope this to
++    # the ldd walk: exported script-wide it also reaches binutils, whose
++    # readelf links libcurl (via libdebuginfod) and then fails to start against
++    # this older OpenSSL.
++    LD_LIBRARY_PATH="$OPENSSL_LIB_DIR" collect_deps "$STAGE_DIR/haproxy"
++else
++    collect_deps "$STAGE_DIR/haproxy"
++fi
+ 
+ # Also vendor the OpenSSL .so files we built from source — ldd sees them by
+ # their build path, but make sure their sonames are in lib/.