diff --git a/docs/packages/ray.yaml b/docs/packages/ray.yaml
index 6d5ed93dc6d..f94edb28d6b 100644
--- a/docs/packages/ray.yaml
+++ b/docs/packages/ray.yaml
@@ -15,3 +15,4 @@ versions:
   - filename: ray-2.58.0-cp314-cp314-manylinux_2_39_riscv64.whl
     sha256: e65f089c913024ea2ac05cca674f049ad5bab1fa8e83fb3de0dcf76c11577bbf
     requires-python: '>=3.10'
+- version: 2.59.0
diff --git a/patches/ray/2.59.0/0001-Build-with-a-manylinux-interpreter-not-a-hermetic-CPython.patch b/patches/ray/2.59.0/0001-Build-with-a-manylinux-interpreter-not-a-hermetic-CPython.patch
new file mode 100644
index 00000000000..68135c078fe
--- /dev/null
+++ b/patches/ray/2.59.0/0001-Build-with-a-manylinux-interpreter-not-a-hermetic-CPython.patch
@@ -0,0 +1,71 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ludovic Henry <git@ludovic.dev>
+Date: Tue, 25 Aug 2026 22:30:00 +0200
+Subject: [PATCH] Build with a manylinux interpreter, not a hermetic CPython 3.10
+
+WORKSPACE calls python_register_toolchains(python_version = "3.10") and then
+load()s @python3_10 at the top level, so every bazel invocation downloads a
+python-build-standalone interpreter for the host platform before anything is
+analysed. The rules_python version ray resolves declares no riscv64 platform,
+so that load fails with
+
+    No platform declared for host OS linux on arch riscv64
+
+Point the py310 runtime and pip_parse at the manylinux image's own CPython
+3.10 instead. It has to stay 3.10 rather than follow the interpreter each
+wheel is built for: the pip vendored by that rules_python imports distutils,
+which 3.12 removed.
+
+Ray 2.59.0 overrides @pypi__pip with pip 24.3.1 between the python3_10
+load and pip_install_dependencies(); that override is kept as is, only the
+hermetic interpreter around it is removed.
+
+Upstream-Status: Inappropriate [riscv64 build environment; upstream's own fix would be a rules_python bump, python-build-standalone does publish riscv64 CPython now]
+---
+diff --git a/WORKSPACE b/WORKSPACE
+index 4554595..19b0f0d 100644
+--- a/WORKSPACE
++++ b/WORKSPACE
+@@ -51,15 +51,6 @@ load("@hedron_compile_commands//:workspace_setup.bzl", "hedron_compile_commands_
+ 
+ hedron_compile_commands_setup()
+ 
+-load("@rules_python//python:repositories.bzl", "python_register_toolchains")
+-
+-python_register_toolchains(
+-    name = "python3_10",
+-    python_version = "3.10",
+-    register_toolchains = False,
+-)
+-
+-load("@python3_10//:defs.bzl", python310 = "interpreter")
+ load("@rules_python//python/pip_install:repositories.bzl", "pip_install_dependencies")
+ 
+ # The pip that whl_library shells out to, overridden ahead of the one rules_python
+@@ -133,7 +124,7 @@ load("@rules_python//python:pip.bzl", "pip_parse")
+ # For CI scripts use only; not for ray testing.
+ pip_parse(
+     name = "py_deps_py310",
+-    python_interpreter_target = python310,
++    python_interpreter = "/opt/python/cp310-cp310/bin/python3",
+     requirements_lock = "//release:requirements_py310.txt",
+ )
+ 
+diff --git a/bazel/BUILD.bazel b/bazel/BUILD.bazel
+index 9d422c1..cb3c32d 100644
+--- a/bazel/BUILD.bazel
++++ b/bazel/BUILD.bazel
+@@ -1,4 +1,3 @@
+-load("@python3_10//:defs.bzl", python310 = "interpreter")
+ load("@py_deps_py310//:requirements.bzl", ci_require = "requirement")
+ load("@rules_python//python:defs.bzl", "py_binary", "py_library", "py_runtime", "py_runtime_pair")
+ 
+@@ -72,7 +71,7 @@ config_setting(
+ 
+ py_runtime(
+     name = "py310_runtime",
+-    interpreter = python310,
++    interpreter_path = "/opt/python/cp310-cp310/bin/python3",
+     python_version = "PY3",
+     visibility = ["//visibility:private"],
+ )
diff --git a/patches/ray/2.59.0/0002-Build-boost.context-s-riscv64-assembly.patch b/patches/ray/2.59.0/0002-Build-boost.context-s-riscv64-assembly.patch
new file mode 100644
index 00000000000..f4cb6d76309
--- /dev/null
+++ b/patches/ray/2.59.0/0002-Build-boost.context-s-riscv64-assembly.patch
@@ -0,0 +1,83 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ludovic Henry <git@ludovic.dev>
+Date: Thu, 27 Aug 2026 15:12:28 +0200
+Subject: [PATCH] Build boost.context's riscv64 assembly
+
+Boost.Context implements its stack switching primitives -- jump_fcontext,
+make_fcontext, ontop_fcontext -- in hand-written assembly, one file per
+(architecture, ABI, object format).  rules_boost selects them in
+BOOST_CTX_ASM_SOURCES, which enumerates aarch64, arm, ppc64, x86_64, the
+Apple targets and Windows, and ends in "//conditions:default": [].
+
+riscv64 hits that default, so @boost//:context is compiled with no assembly
+at all.  Nothing fails while building: the three symbols are simply left
+undefined in _raylet.so, which links @boost//:fiber, and the failure only
+appears the first time the extension is loaded --
+
+    OSError: .../ray/_raylet.so: undefined symbol: jump_fcontext
+
+Boost has shipped libs/context/src/asm/{jump,make,ontop}_riscv64_sysv_elf_gas.S
+since 1.71.0, and ray pins 1.81.0, so the sources are already present in the
+archive.  Add the linux_riscv64 config_setting and point the select at them,
+exactly as every other ELF target does.
+
+Carried as one more entry in ray's existing thirdparty/patches list because
+rules_boost is pinned as a third-party archive; the fix itself belongs in
+nelhage/rules_boost, whose master branch still has no riscv64 branch in this
+select.
+
+Upstream-Status: To upstream [the change is to nelhage/rules_boost, which ray pins by commit hash; ray itself can only carry it as a patch, and rules_boost has no riscv64 support to bump to]
+---
+ bazel/ray_deps_setup.bzl                      |  1 +
+ .../patches/boost-riscv64-context.patch       | 30 +++++++++++++++++++
+ 2 files changed, 31 insertions(+)
+ create mode 100644 thirdparty/patches/boost-riscv64-context.patch
+
+diff --git a/bazel/ray_deps_setup.bzl b/bazel/ray_deps_setup.bzl
+index bbf3c84..c1d5710 100644
+--- a/bazel/ray_deps_setup.bzl
++++ b/bazel/ray_deps_setup.bzl
+@@ -242,6 +242,7 @@ def ray_deps_setup():
+         sha256 = "490d11425393eed068966a4990ead1ff07c658f823fd982fddac67006ccc44ab",
+         patches = [
+             "//thirdparty/patches:boost-headers.patch",
++            "//thirdparty/patches:boost-riscv64-context.patch",
+         ],
+         patch_args = ["-p1"],
+     )
+diff --git a/thirdparty/patches/boost-riscv64-context.patch b/thirdparty/patches/boost-riscv64-context.patch
+new file mode 100644
+index 0000000..bae3ec6
+--- /dev/null
++++ b/thirdparty/patches/boost-riscv64-context.patch
+@@ -0,0 +1,30 @@
++diff --git BUILD.boost BUILD.boost
++--- a/BUILD.boost
+++++ b/BUILD.boost
++@@ -37,6 +37,14 @@ config_setting(
++ )
++ 
++ config_setting(
+++    name = "linux_riscv64",
+++    constraint_values = [
+++        "@platforms//os:linux",
+++        "@platforms//cpu:riscv64",
+++    ],
+++)
+++
+++config_setting(
++     name = "linux_x86_64",
++     constraint_values = [
++         "@platforms//os:linux",
++@@ -111,6 +119,11 @@ BOOST_CTX_ASM_SOURCES = selects.with_or({
++         "libs/context/src/asm/make_ppc64_sysv_elf_gas.S",
++         "libs/context/src/asm/ontop_ppc64_sysv_elf_gas.S",
++     ],
+++    ":linux_riscv64": [
+++        "libs/context/src/asm/jump_riscv64_sysv_elf_gas.S",
+++        "libs/context/src/asm/make_riscv64_sysv_elf_gas.S",
+++        "libs/context/src/asm/ontop_riscv64_sysv_elf_gas.S",
+++    ],
++     ":linux_x86_64": [
++         "libs/context/src/asm/jump_x86_64_sysv_elf_gas.S",
++         "libs/context/src/asm/make_x86_64_sysv_elf_gas.S",