diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7657c332..68056003 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,8 @@
 
 ### Added
 
+- **mtest 0.5.1.** 四个包的 0.5.1：协议标记在只保留可达部分的链接（`--gc-sections`）中保留，`mcpp test`
+  2026.11.9.1 以此链接测试程序。测试成员移到 0.5.1。
 - **mtest 0.5.0.** 四个包的 0.5.0（同一标签、同一归档）：一次运行为一张有向无环图，关键路径为其约束链；Markdown 报告
   （mermaid 的图与甘特图）；每个用例的资源用量（`[monitor]`）；按用例跨进程调度；run 作用域夹具、资源池与组件。依赖
   mcpplibs.os 0.4.1。测试成员移到 0.5.0。
diff --git a/pkgs/m/mcpplibs.mtest.capi.lua b/pkgs/m/mcpplibs.mtest.capi.lua
index f5cf9e5d..2d45379d 100644
--- a/pkgs/m/mcpplibs.mtest.capi.lua
+++ b/pkgs/m/mcpplibs.mtest.capi.lua
@@ -21,6 +21,13 @@ package = {
 
     xpm = {
         linux = {
+            ["0.5.1"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.1/mtest-v0.5.1.tar.gz",
+                },
+                sha256 = "48625c19d548aa4e90bf658f895fe99c10bf9316efaa3354d4cb65df9ccd7324",
+            },
             ["0.5.0"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.0.tar.gz",
@@ -65,6 +72,13 @@ package = {
             },
         },
         macosx = {
+            ["0.5.1"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.1/mtest-v0.5.1.tar.gz",
+                },
+                sha256 = "48625c19d548aa4e90bf658f895fe99c10bf9316efaa3354d4cb65df9ccd7324",
+            },
             ["0.5.0"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.0.tar.gz",
@@ -109,6 +123,13 @@ package = {
             },
         },
         windows = {
+            ["0.5.1"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.1/mtest-v0.5.1.tar.gz",
+                },
+                sha256 = "48625c19d548aa4e90bf658f895fe99c10bf9316efaa3354d4cb65df9ccd7324",
+            },
             ["0.5.0"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.0.tar.gz",
diff --git a/pkgs/m/mcpplibs.mtest.gtest.lua b/pkgs/m/mcpplibs.mtest.gtest.lua
index 4f3ef723..a14e961e 100644
--- a/pkgs/m/mcpplibs.mtest.gtest.lua
+++ b/pkgs/m/mcpplibs.mtest.gtest.lua
@@ -20,6 +20,13 @@ package = {
 
     xpm = {
         linux = {
+            ["0.5.1"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.1/mtest-v0.5.1.tar.gz",
+                },
+                sha256 = "48625c19d548aa4e90bf658f895fe99c10bf9316efaa3354d4cb65df9ccd7324",
+            },
             ["0.5.0"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.0.tar.gz",
@@ -64,6 +71,13 @@ package = {
             },
         },
         macosx = {
+            ["0.5.1"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.1/mtest-v0.5.1.tar.gz",
+                },
+                sha256 = "48625c19d548aa4e90bf658f895fe99c10bf9316efaa3354d4cb65df9ccd7324",
+            },
             ["0.5.0"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.0.tar.gz",
@@ -108,6 +122,13 @@ package = {
             },
         },
         windows = {
+            ["0.5.1"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.1/mtest-v0.5.1.tar.gz",
+                },
+                sha256 = "48625c19d548aa4e90bf658f895fe99c10bf9316efaa3354d4cb65df9ccd7324",
+            },
             ["0.5.0"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.0.tar.gz",
diff --git a/pkgs/m/mcpplibs.mtest.manifest.lua b/pkgs/m/mcpplibs.mtest.manifest.lua
index a2028387..c921565d 100644
--- a/pkgs/m/mcpplibs.mtest.manifest.lua
+++ b/pkgs/m/mcpplibs.mtest.manifest.lua
@@ -22,6 +22,13 @@ package = {
 
     xpm = {
         linux = {
+            ["0.5.1"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.1/mtest-v0.5.1.tar.gz",
+                },
+                sha256 = "48625c19d548aa4e90bf658f895fe99c10bf9316efaa3354d4cb65df9ccd7324",
+            },
             ["0.5.0"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.0.tar.gz",
@@ -52,6 +59,13 @@ package = {
             },
         },
         macosx = {
+            ["0.5.1"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.1/mtest-v0.5.1.tar.gz",
+                },
+                sha256 = "48625c19d548aa4e90bf658f895fe99c10bf9316efaa3354d4cb65df9ccd7324",
+            },
             ["0.5.0"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.0.tar.gz",
@@ -82,6 +96,13 @@ package = {
             },
         },
         windows = {
+            ["0.5.1"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.1/mtest-v0.5.1.tar.gz",
+                },
+                sha256 = "48625c19d548aa4e90bf658f895fe99c10bf9316efaa3354d4cb65df9ccd7324",
+            },
             ["0.5.0"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.0.tar.gz",
diff --git a/pkgs/m/mtest.lua b/pkgs/m/mtest.lua
index 95868d16..2113375b 100644
--- a/pkgs/m/mtest.lua
+++ b/pkgs/m/mtest.lua
@@ -23,6 +23,13 @@ package = {
 
     xpm = {
         linux = {
+            ["0.5.1"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.1/mtest-v0.5.1.tar.gz",
+                },
+                sha256 = "48625c19d548aa4e90bf658f895fe99c10bf9316efaa3354d4cb65df9ccd7324",
+            },
             ["0.5.0"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.0.tar.gz",
@@ -67,6 +74,13 @@ package = {
             },
         },
         macosx = {
+            ["0.5.1"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.1/mtest-v0.5.1.tar.gz",
+                },
+                sha256 = "48625c19d548aa4e90bf658f895fe99c10bf9316efaa3354d4cb65df9ccd7324",
+            },
             ["0.5.0"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.0.tar.gz",
@@ -111,6 +125,13 @@ package = {
             },
         },
         windows = {
+            ["0.5.1"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.1/mtest-v0.5.1.tar.gz",
+                },
+                sha256 = "48625c19d548aa4e90bf658f895fe99c10bf9316efaa3354d4cb65df9ccd7324",
+            },
             ["0.5.0"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.0.tar.gz",
diff --git a/tests/examples/mtest-capi/mcpp.toml b/tests/examples/mtest-capi/mcpp.toml
index 4139d9be..23e6f1aa 100644
--- a/tests/examples/mtest-capi/mcpp.toml
+++ b/tests/examples/mtest-capi/mcpp.toml
@@ -8,4 +8,4 @@ version = "0.1.0"
 # Use the complete candidate built-in index prepared by tests/run_members.sh.
 
 [dependencies]
-mcpplibs.mtest.capi = "0.5.0"
+mcpplibs.mtest.capi = "0.5.1"
diff --git a/tests/examples/mtest-gtest/mcpp.toml b/tests/examples/mtest-gtest/mcpp.toml
index 9db1f1bf..b58e726c 100644
--- a/tests/examples/mtest-gtest/mcpp.toml
+++ b/tests/examples/mtest-gtest/mcpp.toml
@@ -10,7 +10,7 @@ version = "0.1.0"
 
 [dev-dependencies]
 compat.gtest         = "1.18.0"
-mcpplibs.mtest.gtest = "0.5.0"
+mcpplibs.mtest.gtest = "0.5.1"
 
 [test]
 main = { from = "mcpplibs.mtest.gtest/main" }
diff --git a/tests/examples/mtest-manifest/mcpp.toml b/tests/examples/mtest-manifest/mcpp.toml
index d489ff97..451a6999 100644
--- a/tests/examples/mtest-manifest/mcpp.toml
+++ b/tests/examples/mtest-manifest/mcpp.toml
@@ -8,4 +8,4 @@ version = "0.1.0"
 # Use the complete candidate built-in index prepared by tests/run_members.sh.
 
 [dependencies]
-mcpplibs.mtest.manifest = "0.5.0"
+mcpplibs.mtest.manifest = "0.5.1"
diff --git a/tests/examples/mtest/mcpp.toml b/tests/examples/mtest/mcpp.toml
index 0eec9cfe..a9be14aa 100644
--- a/tests/examples/mtest/mcpp.toml
+++ b/tests/examples/mtest/mcpp.toml
@@ -9,4 +9,4 @@ version = "0.1.0"
 # Use the complete candidate built-in index prepared by tests/run_members.sh.
 
 [dev-dependencies]
-mcpplibs.mtest = "0.5.0"
+mcpplibs.mtest = "0.5.1"