diff --git a/.agents/docs/2026-10-19-update-compat-httplib-0.62.0-plan.md b/.agents/docs/2026-10-19-update-compat-httplib-0.62.0-plan.md
new file mode 100644
index 00000000..26e90a7b
--- /dev/null
+++ b/.agents/docs/2026-10-19-update-compat-httplib-0.62.0-plan.md
@@ -0,0 +1,82 @@
+# Update compat:httplib to 0.62.0
+
+## Scope and source
+
+- Upstream: <https://github.com/yhirose/cpp-httplib/releases/tag/v0.62.0>.
+- Add `0.62.0` to Linux, macOS and Windows; retain the existing `0.53.1` entries.
+- Keep the Form B header-only recipe unchanged: the archive still ships one
+  `httplib.h` at its root (the leading `*` in `include_dirs` absorbs the
+  `cpp-httplib-0.62.0/` wrapper), and the generated anchor TU still gives the
+  package a lib target for consumers to link.
+- Update the six example members (`httplib`, `httplib-tls`, `httplib-zlib`,
+  `httplib-brotli`, `httplib-zstd`, `httplib-no-exceptions`) to `0.62.0`.
+  Feature names and dependency shapes are unchanged.
+
+## Archives and mirrors
+
+The GitHub tag archive was downloaded twice and each copy hashed; both
+downloads produced the same SHA-256:
+
+| Version | SHA-256 |
+| --- | --- |
+| 0.62.0 | `7bba5949c56e772236432f69da03197fd4c12dc443455b9d81f6a05575431fc8` |
+
+No GitCode configuration or token is available in this environment. The new
+entries use plain upstream URLs, as allowed by `docs/cn-mirror.md`; the
+existing 0.53.1 entries are untouched.
+
+## Automatic updates
+
+The descriptor declares `package.extensions.autoupdate` with the
+`v${version}` tag template and the GitHub tag-archive URL, so future releases
+are proposed by `openxlings/xpkgindex-update` without manual descriptor edits.
+Since all three platforms use the same archive, the new version's URL and
+SHA-256 live once in a leading `local versions` table and each platform
+references `versions["0.62.0"]`, matching the updater's append-only layout.
+The historical `0.53.1` entries remain byte-for-byte unchanged.
+
+## Recipe and compatibility
+
+- The upstream CMake `option(...)` set is byte-for-byte the same in 0.53.1 and
+  0.62.0 (diffed the two files). There is no new build switch to encode in
+  the descriptor.
+- Upstream `target_link_libraries` is also unchanged: Threads on all
+  platforms, `ws2_32`/`crypt32` on Windows, and
+  CFNetwork/CoreFoundation/Security on Darwin. The descriptor already carries
+  those in `linux`/`macosx`/`windows` `ldflags`.
+- The header grew from 747,115 to 846,648 bytes. The additions (SSE client,
+  WebSocket helpers, hardening) live entirely inside `httplib.h`: they add no
+  defines, no extra sources and no link requirements, so the recipe needs no
+  new feature entry.
+- 0.62.0's own release note is a runtime fix: on Windows a pong timeout now
+  also wakes a blocked `read()`, and `read()` returns `Fail` rather than
+  `Timeout` for a connection that has closed. No descriptor impact.
+- 0.62.0 upstream also understands wolfSSL and MbedTLS
+  (`CPPHTTPLIB_WOLFSSL_SUPPORT` / `CPPHTTPLIB_MBEDTLS_SUPPORT`). This index
+  has no `compat.wolfssl` or `compat.mbedtls`, so no feature is added; `tls`
+  remains OpenSSL-only, exactly as before.
+- Feature set unchanged: `tls`, `zlib`, `brotli`, `zstd`, `no-exceptions`.
+
+## Validation
+
+- `mcpp xpkg parse --all-os pkgs/c/compat.httplib.lua` -> `parse OK` for
+  linux, macosx and windows with `0.62.0` and `0.53.1` resolved on each.
+- Windows, local mcpp 2026.10.11.1 (CI pins 2026.10.1.2 in
+  `.github/workflows/validate.yml`), LLVM 23.1.3 / MSVC 14.44.35207:
+  - `mcpp test -p httplib` -> 1 passed; 0 failed.
+  - `mcpp test -p httplib-zlib` -> 1 passed; 0 failed.
+  - `mcpp test -p httplib-brotli` -> 1 passed; 0 failed.
+  - `mcpp test -p httplib-no-exceptions` -> 1 passed; 0 failed.
+  - `mcpp test -p httplib-tls` -> blocked before compiling `compat.httplib`:
+    the `compat.openssl` 3.5.1 install hook on Windows needs a Perl with
+    `Locale::Maketext::Simple` (upstream's Configure), and this host has no
+    Perl at all. Environmental, not caused by this update; the mirror was
+    forced to GLOBAL because `mirror = "auto"` otherwise hangs trying the CN
+    source. CI decides this leg.
+  - `mcpp test -p httplib-zstd` -> blocked before compiling `compat.httplib`:
+    `compat.zstd` 1.5.7 unpacking fails on Windows because the upstream tag
+    archive contains the symlink `tests/cli-tests/bin/unzstd -> zstd`, which
+    xlings cannot materialise. The package and this member's dependency shape
+    are unchanged by this update, so the failure is pre-existing and
+    environmental; CI decides this leg.
+- The Linux and macOS legs are left to CI.
diff --git a/CHANGELOG.md b/CHANGELOG.md
index eb9d2032..38c9f568 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,18 @@
 
 ### Added
 
+- **`compat.httplib` 0.62.0。** 在 `0.53.1` 之外新增版本键(旧键保留)。仍是纯头文件 Form B:
+  归档根目录仍只有一份 `httplib.h`(747,115 → 846,648 字节,增量是 SSE 客户端、WebSocket
+  辅助与加固,全部落在头内,不引入 define、源文件或链接依赖),描述符的内联构建无需改动。
+  上游 CMake 的 `option()` 集合与 `target_link_libraries` 在 0.53.1→0.62.0 之间逐项相同
+  (两版实测 diff),三平台 ldflags 照旧。0.62.0 上游认识 wolfSSL/MbedTLS 后端,但本索引
+  没有对应的 compat 包,`tls` 仍只接 OpenSSL,不新增 feature。实测(Windows / mcpp
+  2026.10.11.1 / LLVM 23.1.3 + MSVC 14.44):`mcpp xpkg parse` OK;`httplib`、`httplib-zlib`、
+  `httplib-brotli`、`httplib-no-exceptions` 各 1 passed。`httplib-tls` 与 `httplib-zstd`
+  在本机都止步于依赖安装、未编到本包:`compat.openssl` 3.5.1 的 Windows 安装钩子需要带
+  `Locale::Maketext::Simple` 的 Perl,而本机没有 Perl;`compat.zstd` 1.5.7 的上游 tag 归档含
+  符号链接 `tests/cli-tests/bin/unzstd -> zstd`,Windows 上 xlings 无法创建。两项都与本次
+  改版无关,交 CI 裁决。六个测试成员同步改到 0.62.0。
 - **`compat.wolfssl` 5.9.4。** wolfSSL(TLS/crypto)以 C 源码 compat 形态收录,上游最新稳定
   tag 为 `v5.9.4-stable`。上游的 autotools/CMake 都会在编译前生成 `wolfssl/options.h`,而内联
   描述符无法运行 configure,因此把该步骤的两项输出原样带入:`sources` 逐条抄自上游 CMake 默认
diff --git a/pkgs/c/compat.httplib.lua b/pkgs/c/compat.httplib.lua
index 8a38e64c..d66a282b 100644
--- a/pkgs/c/compat.httplib.lua
+++ b/pkgs/c/compat.httplib.lua
@@ -1,3 +1,10 @@
+local versions = {
+    ["0.62.0"] = {
+        url = "https://github.com/yhirose/cpp-httplib/archive/refs/tags/v0.62.0.tar.gz",
+        sha256 = "7bba5949c56e772236432f69da03197fd4c12dc443455b9d81f6a05575431fc8",
+    },
+}
+
 -- Form B header-only descriptor for cpp-httplib. Optional backends stay off
 -- unless a consumer requests the corresponding mcpp feature.
 package = {
@@ -24,18 +31,21 @@ package = {
                 url    = "https://github.com/yhirose/cpp-httplib/archive/refs/tags/v0.53.1.tar.gz",
                 sha256 = "185af9587e270de9a3bfee234c6740f02e82265da33c7a41f97e02ee42f979d2",
             },
+            ["0.62.0"] = versions["0.62.0"],
         },
         macosx = {
             ["0.53.1"] = {
                 url    = "https://github.com/yhirose/cpp-httplib/archive/refs/tags/v0.53.1.tar.gz",
                 sha256 = "185af9587e270de9a3bfee234c6740f02e82265da33c7a41f97e02ee42f979d2",
             },
+            ["0.62.0"] = versions["0.62.0"],
         },
         windows = {
             ["0.53.1"] = {
                 url    = "https://github.com/yhirose/cpp-httplib/archive/refs/tags/v0.53.1.tar.gz",
                 sha256 = "185af9587e270de9a3bfee234c6740f02e82265da33c7a41f97e02ee42f979d2",
             },
+            ["0.62.0"] = versions["0.62.0"],
         },
     },
 
diff --git a/tests/examples/httplib-brotli/mcpp.toml b/tests/examples/httplib-brotli/mcpp.toml
index ad9d9a45..97a37b5b 100644
--- a/tests/examples/httplib-brotli/mcpp.toml
+++ b/tests/examples/httplib-brotli/mcpp.toml
@@ -3,4 +3,4 @@ name = "httplib-brotli-tests"
 version = "0.1.0"
 
 [dependencies.compat]
-httplib = { version = "0.53.1", features = ["brotli"] }
+httplib = { version = "0.62.0", features = ["brotli"] }
diff --git a/tests/examples/httplib-no-exceptions/mcpp.toml b/tests/examples/httplib-no-exceptions/mcpp.toml
index 01ea5607..9f26b6eb 100644
--- a/tests/examples/httplib-no-exceptions/mcpp.toml
+++ b/tests/examples/httplib-no-exceptions/mcpp.toml
@@ -3,4 +3,4 @@ name = "httplib-no-exceptions-tests"
 version = "0.1.0"
 
 [dependencies.compat]
-httplib = { version = "0.53.1", features = ["no-exceptions"] }
+httplib = { version = "0.62.0", features = ["no-exceptions"] }
diff --git a/tests/examples/httplib-tls/mcpp.toml b/tests/examples/httplib-tls/mcpp.toml
index b04ce82e..936d0e3f 100644
--- a/tests/examples/httplib-tls/mcpp.toml
+++ b/tests/examples/httplib-tls/mcpp.toml
@@ -3,4 +3,4 @@ name = "httplib-tls-tests"
 version = "0.1.0"
 
 [dependencies.compat]
-httplib = { version = "0.53.1", features = ["tls"] }
+httplib = { version = "0.62.0", features = ["tls"] }
diff --git a/tests/examples/httplib-zlib/mcpp.toml b/tests/examples/httplib-zlib/mcpp.toml
index e557f6b6..530a9e12 100644
--- a/tests/examples/httplib-zlib/mcpp.toml
+++ b/tests/examples/httplib-zlib/mcpp.toml
@@ -3,4 +3,4 @@ name = "httplib-zlib-tests"
 version = "0.1.0"
 
 [dependencies.compat]
-httplib = { version = "0.53.1", features = ["zlib"] }
+httplib = { version = "0.62.0", features = ["zlib"] }
diff --git a/tests/examples/httplib-zstd/mcpp.toml b/tests/examples/httplib-zstd/mcpp.toml
index cf588ca1..fd6b6f9d 100644
--- a/tests/examples/httplib-zstd/mcpp.toml
+++ b/tests/examples/httplib-zstd/mcpp.toml
@@ -3,4 +3,4 @@ name = "httplib-zstd-tests"
 version = "0.1.0"
 
 [dependencies.compat]
-httplib = { version = "0.53.1", features = ["zstd"] }
+httplib = { version = "0.62.0", features = ["zstd"] }
diff --git a/tests/examples/httplib/mcpp.toml b/tests/examples/httplib/mcpp.toml
index 0a16701f..d52151ac 100644
--- a/tests/examples/httplib/mcpp.toml
+++ b/tests/examples/httplib/mcpp.toml
@@ -3,4 +3,4 @@ name = "httplib-tests"
 version = "0.1.0"
 
 [dependencies.compat]
-httplib = "0.53.1"
+httplib = "0.62.0"