diff --git a/CHANGELOG.md b/CHANGELOG.md
index 68056003..b0bcc82c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,8 @@
 
 ### Added
 
+- **mtest 0.5.2.** 四个包的 0.5.2：自启动副本的测试以对象 `child` 声明副本所做之事、以 `child_command` 启动之，
+  故不再定义 `main`，同一目录的文件可为一个程序；库对 mcpplibs.os 的要求为 `^0.4.1`。测试成员移到 0.5.2。
 - **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
diff --git a/pkgs/m/mcpplibs.mtest.capi.lua b/pkgs/m/mcpplibs.mtest.capi.lua
index 2d45379d..6391a21b 100644
--- a/pkgs/m/mcpplibs.mtest.capi.lua
+++ b/pkgs/m/mcpplibs.mtest.capi.lua
@@ -21,6 +21,13 @@ package = {
 
     xpm = {
         linux = {
+            ["0.5.2"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.2.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.2/mtest-v0.5.2.tar.gz",
+                },
+                sha256 = "e61819239dca14d3c987f554b8c09e5bc248fdb8bba2650adb53e775db2ccf93",
+            },
             ["0.5.1"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
@@ -72,6 +79,13 @@ package = {
             },
         },
         macosx = {
+            ["0.5.2"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.2.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.2/mtest-v0.5.2.tar.gz",
+                },
+                sha256 = "e61819239dca14d3c987f554b8c09e5bc248fdb8bba2650adb53e775db2ccf93",
+            },
             ["0.5.1"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
@@ -123,6 +137,13 @@ package = {
             },
         },
         windows = {
+            ["0.5.2"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.2.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.2/mtest-v0.5.2.tar.gz",
+                },
+                sha256 = "e61819239dca14d3c987f554b8c09e5bc248fdb8bba2650adb53e775db2ccf93",
+            },
             ["0.5.1"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
diff --git a/pkgs/m/mcpplibs.mtest.gtest.lua b/pkgs/m/mcpplibs.mtest.gtest.lua
index a14e961e..6456862a 100644
--- a/pkgs/m/mcpplibs.mtest.gtest.lua
+++ b/pkgs/m/mcpplibs.mtest.gtest.lua
@@ -20,6 +20,13 @@ package = {
 
     xpm = {
         linux = {
+            ["0.5.2"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.2.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.2/mtest-v0.5.2.tar.gz",
+                },
+                sha256 = "e61819239dca14d3c987f554b8c09e5bc248fdb8bba2650adb53e775db2ccf93",
+            },
             ["0.5.1"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
@@ -71,6 +78,13 @@ package = {
             },
         },
         macosx = {
+            ["0.5.2"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.2.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.2/mtest-v0.5.2.tar.gz",
+                },
+                sha256 = "e61819239dca14d3c987f554b8c09e5bc248fdb8bba2650adb53e775db2ccf93",
+            },
             ["0.5.1"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
@@ -122,6 +136,13 @@ package = {
             },
         },
         windows = {
+            ["0.5.2"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.2.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.2/mtest-v0.5.2.tar.gz",
+                },
+                sha256 = "e61819239dca14d3c987f554b8c09e5bc248fdb8bba2650adb53e775db2ccf93",
+            },
             ["0.5.1"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
diff --git a/pkgs/m/mcpplibs.mtest.manifest.lua b/pkgs/m/mcpplibs.mtest.manifest.lua
index c921565d..16dafa73 100644
--- a/pkgs/m/mcpplibs.mtest.manifest.lua
+++ b/pkgs/m/mcpplibs.mtest.manifest.lua
@@ -22,6 +22,13 @@ package = {
 
     xpm = {
         linux = {
+            ["0.5.2"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.2.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.2/mtest-v0.5.2.tar.gz",
+                },
+                sha256 = "e61819239dca14d3c987f554b8c09e5bc248fdb8bba2650adb53e775db2ccf93",
+            },
             ["0.5.1"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
@@ -59,6 +66,13 @@ package = {
             },
         },
         macosx = {
+            ["0.5.2"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.2.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.2/mtest-v0.5.2.tar.gz",
+                },
+                sha256 = "e61819239dca14d3c987f554b8c09e5bc248fdb8bba2650adb53e775db2ccf93",
+            },
             ["0.5.1"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
@@ -96,6 +110,13 @@ package = {
             },
         },
         windows = {
+            ["0.5.2"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.2.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.2/mtest-v0.5.2.tar.gz",
+                },
+                sha256 = "e61819239dca14d3c987f554b8c09e5bc248fdb8bba2650adb53e775db2ccf93",
+            },
             ["0.5.1"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
diff --git a/pkgs/m/mtest.lua b/pkgs/m/mtest.lua
index 2113375b..0c1f702d 100644
--- a/pkgs/m/mtest.lua
+++ b/pkgs/m/mtest.lua
@@ -23,6 +23,13 @@ package = {
 
     xpm = {
         linux = {
+            ["0.5.2"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.2.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.2/mtest-v0.5.2.tar.gz",
+                },
+                sha256 = "e61819239dca14d3c987f554b8c09e5bc248fdb8bba2650adb53e775db2ccf93",
+            },
             ["0.5.1"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
@@ -74,6 +81,13 @@ package = {
             },
         },
         macosx = {
+            ["0.5.2"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.2.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.2/mtest-v0.5.2.tar.gz",
+                },
+                sha256 = "e61819239dca14d3c987f554b8c09e5bc248fdb8bba2650adb53e775db2ccf93",
+            },
             ["0.5.1"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
@@ -125,6 +139,13 @@ package = {
             },
         },
         windows = {
+            ["0.5.2"] = {
+                url = {
+                    GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.2.tar.gz",
+                    CN = "https://gitcode.com/mcpp-res/mtest/releases/download/v0.5.2/mtest-v0.5.2.tar.gz",
+                },
+                sha256 = "e61819239dca14d3c987f554b8c09e5bc248fdb8bba2650adb53e775db2ccf93",
+            },
             ["0.5.1"] = {
                 url = {
                     GLOBAL = "https://github.com/mcpp-community/mtest/archive/refs/tags/v0.5.1.tar.gz",
diff --git a/tests/examples/mtest-capi/mcpp.toml b/tests/examples/mtest-capi/mcpp.toml
index 23e6f1aa..6d2b506a 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 = "0.5.1"
+mcpplibs.mtest.capi = "0.5.2"
diff --git a/tests/examples/mtest-gtest/mcpp.toml b/tests/examples/mtest-gtest/mcpp.toml
index b58e726c..18ebac7a 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 = "0.5.1"
+mcpplibs.mtest.gtest = "0.5.2"
 
 [test]
 main = { from = "mcpplibs.mtest.gtest/main" }
diff --git a/tests/examples/mtest-manifest/mcpp.toml b/tests/examples/mtest-manifest/mcpp.toml
index 451a6999..004b731d 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 = "0.5.1"
+mcpplibs.mtest.manifest = "0.5.2"
diff --git a/tests/examples/mtest/mcpp.toml b/tests/examples/mtest/mcpp.toml
index a9be14aa..fe391ff8 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 = "0.5.1"
+mcpplibs.mtest = "0.5.2"