diff --git a/CHANGELOG.md b/CHANGELOG.md
index 543a13e7..5235ca36 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,9 @@
 
 ### Added
 
+- **openkal-llvm-runtime 0.18.1。** 有分支保护时 compiler-rt 的 outline atomics 也能汇编（openkal-platform 0.23.0 在 aarch64 上的
+  `-mbranch-protection=pac-ret+bti`）：libunwind 的同名 `assembly.h` 不再跟在 compiler-rt 的之后重定义 `GNU_PROPERTY`，目标文件带有
+  `aarch64 feature: BTI, PAC`。测试成员 `openkal` 随之移动。GLOBAL 为 GitHub 标签归档，CN 为 GitCode `mcpp-res` 镜像，sha256 两处一致。
 - **openkal-llvm-runtime 0.18.0。** 建在 openkal-musl 0.27.0 之上（openkal 0.23），即 openkal-platform 0.23.0 所指的 C 库；加固与帧指针
   随平台的编译选项。测试成员 `openkal` 随之移动。GLOBAL 为 GitHub 标签归档，CN 为 GitCode `mcpp-res` 镜像，sha256 两处一致。
 - **openkal-musl 0.27.0。** 面向 openkal 0.23（openkal-linux 0.24.0、openkal-macos 0.21.2、openkal-windows 0.19.0）与
diff --git a/pkgs/o/openkal-llvm-runtime.lua b/pkgs/o/openkal-llvm-runtime.lua
index cc34b149..749cb2bf 100644
--- a/pkgs/o/openkal-llvm-runtime.lua
+++ b/pkgs/o/openkal-llvm-runtime.lua
@@ -75,6 +75,13 @@ package = {
 
     xpm = {
         linux = {
+            ["0.18.1"] = {
+                url    = {
+                    GLOBAL = "https://github.com/mcpplibs/openkal-llvm-runtime/archive/refs/tags/0.18.1.tar.gz",
+                    CN     = "https://gitcode.com/mcpp-res/openkal-llvm-runtime/releases/download/0.18.1/openkal-llvm-runtime-0.18.1.tar.gz",
+                },
+                sha256 = "a4606f6d5d7c84e5e9864ad777a7c2a760c75f86c229be0fbb2ec5bf47616b0b",
+            },
             ["0.18.0"] = {
                 url    = {
                     GLOBAL = "https://github.com/mcpplibs/openkal-llvm-runtime/archive/refs/tags/0.18.0.tar.gz",
@@ -434,6 +441,13 @@ package = {
             },
         },
         macosx = {
+            ["0.18.1"] = {
+                url    = {
+                    GLOBAL = "https://github.com/mcpplibs/openkal-llvm-runtime/archive/refs/tags/0.18.1.tar.gz",
+                    CN     = "https://gitcode.com/mcpp-res/openkal-llvm-runtime/releases/download/0.18.1/openkal-llvm-runtime-0.18.1.tar.gz",
+                },
+                sha256 = "a4606f6d5d7c84e5e9864ad777a7c2a760c75f86c229be0fbb2ec5bf47616b0b",
+            },
             ["0.18.0"] = {
                 url    = {
                     GLOBAL = "https://github.com/mcpplibs/openkal-llvm-runtime/archive/refs/tags/0.18.0.tar.gz",
@@ -793,6 +807,13 @@ package = {
             },
         },
         windows = {
+            ["0.18.1"] = {
+                url    = {
+                    GLOBAL = "https://github.com/mcpplibs/openkal-llvm-runtime/archive/refs/tags/0.18.1.tar.gz",
+                    CN     = "https://gitcode.com/mcpp-res/openkal-llvm-runtime/releases/download/0.18.1/openkal-llvm-runtime-0.18.1.tar.gz",
+                },
+                sha256 = "a4606f6d5d7c84e5e9864ad777a7c2a760c75f86c229be0fbb2ec5bf47616b0b",
+            },
             ["0.18.0"] = {
                 url    = {
                     GLOBAL = "https://github.com/mcpplibs/openkal-llvm-runtime/archive/refs/tags/0.18.0.tar.gz",
diff --git a/tests/examples/openkal/mcpp.toml b/tests/examples/openkal/mcpp.toml
index 22a719fd..78aace30 100644
--- a/tests/examples/openkal/mcpp.toml
+++ b/tests/examples/openkal/mcpp.toml
@@ -30,7 +30,7 @@ openkal-macos = "0.21.2"
 openkal-windows = "0.19.0"
 
 [target.'cfg(all(os = "linux", env = "musl"))'.dependencies.mcpplibs]
-openkal-llvm-runtime = "0.18.0"
+openkal-llvm-runtime = "0.18.1"
 
 [target.'cfg(arch = "wasm32")'.dependencies.mcpplibs]
 openkal-emscripten = "0.12.0"