diff --git a/.github/plugin/marketplace.json b/.github/plugin/marketplace.json
index 8e09f9482..0bc042935 100644
--- a/.github/plugin/marketplace.json
+++ b/.github/plugin/marketplace.json
@@ -1030,6 +1030,30 @@
         "sha": "80f2d93287054f9d30dd990e842e15bcfca581c9"
       }
     },
+    {
+      "name": "upgrade-agent",
+      "description": "AI-powered upgrade assistant for upgrading and migrating applications. Helps modernize legacy code and upgrade .NET applications to current frameworks.",
+      "version": "1.1.202",
+      "author": {
+        "name": "Microsoft",
+        "url": "https://www.microsoft.com"
+      },
+      "homepage": "https://github.com/microsoft/upgrade-agent-plugins",
+      "keywords": [
+        "modernization",
+        "upgrade",
+        "migration",
+        "dotnet"
+      ],
+      "license": "MIT",
+      "repository": "https://github.com/microsoft/upgrade-agent-plugins",
+      "source": {
+        "source": "github",
+        "repo": "microsoft/upgrade-agent-plugins",
+        "path": "plugins/upgrade-agent",
+        "sha": "7360a7e7df442761a36909de0e8fe5c3b00a01e7"
+      }
+    },
     {
       "name": "vercel-plugin",
       "description": "Build and deploy web apps and agents. Comprehensive Vercel ecosystem plugin — relational knowledge graph, skills for every major product, specialized agents, and Vercel conventions. Turns any AI agent into a Vercel expert.",
diff --git a/plugins/external.json b/plugins/external.json
index 65a8fa159..4a58346db 100644
--- a/plugins/external.json
+++ b/plugins/external.json
@@ -623,6 +623,30 @@
       "sha": "80f2d93287054f9d30dd990e842e15bcfca581c9"
     }
   },
+  {
+    "name": "upgrade-agent",
+    "description": "AI-powered upgrade assistant for upgrading and migrating applications. Helps modernize legacy code and upgrade .NET applications to current frameworks.",
+    "version": "1.1.202",
+    "author": {
+      "name": "Microsoft",
+      "url": "https://www.microsoft.com"
+    },
+    "homepage": "https://github.com/microsoft/upgrade-agent-plugins",
+    "keywords": [
+      "modernization",
+      "upgrade",
+      "migration",
+      "dotnet"
+    ],
+    "license": "MIT",
+    "repository": "https://github.com/microsoft/upgrade-agent-plugins",
+    "source": {
+      "source": "github",
+      "repo": "microsoft/upgrade-agent-plugins",
+      "path": "plugins/upgrade-agent",
+      "sha": "7360a7e7df442761a36909de0e8fe5c3b00a01e7"
+    }
+  },
   {
     "name": "vercel-plugin",
     "description": "Build and deploy web apps and agents. Comprehensive Vercel ecosystem plugin — relational knowledge graph, skills for every major product, specialized agents, and Vercel conventions. Turns any AI agent into a Vercel expert.",