diff --git a/.claude-plugin/marketplace.json b/.claude-plugin/marketplace.json
index 059d952..63e17df 100644
--- a/.claude-plugin/marketplace.json
+++ b/.claude-plugin/marketplace.json
@@ -19,6 +19,15 @@
       "source": "./plugins/glm-plan-bug",
       "category": "development",
       "description": "Submit case feedback and bug reports for GLM Coding Plan service."
+    },
+    {
+      "name": "version-sentinel",
+      "source": {
+        "source": "github",
+        "repo": "KSEGIT/Version-Sentinel"
+      },
+      "category": "security",
+      "description": "Hard-blocks dependency additions and version changes until a fresh, source-cited version check is recorded. Supports npm, pip, Poetry/uv, Cargo, and NuGet."
     }
   ]
-}
\ No newline at end of file
+}
diff --git a/README.md b/README.md
index 6d8c8af..e937a9a 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,7 @@ A collection of plugins to enhance coding productivity and provide GLM Coding Pl
 |----------------------|-----------------------------------------------------------------------|
 | **glm-plan-usage**   | Query quota and usage statistics for GLM Coding Plan                  |
 | **glm-plan-bug**     | Submit case feedback and bug reports for GLM Coding Plan              |
+| **version-sentinel** | Hard-blocks dependency additions and version changes until a fresh, source-cited version check is recorded (npm, pip, Poetry/uv, Cargo, NuGet) — third-party, from [KSEGIT/Version-Sentinel](https://github.com/KSEGIT/Version-Sentinel) |
 
 **Attention:** **glm-plan-bug** will summarize your current conversation context to help identify issues. If you do not want to report this information, please do not actively use this plugin.