diff --git a/.github/plugin/marketplace.json b/.github/plugin/marketplace.json
index a31b710..3f65563 100644
--- a/.github/plugin/marketplace.json
+++ b/.github/plugin/marketplace.json
@@ -148,6 +148,30 @@
       ],
       "license": "MIT"
     },
+    {
+      "name": "fixlab",
+      "source": {
+        "source": "github",
+        "repo": "MonaDevAI/FixLab"
+      },
+      "description": "Evidence-backed defect diagnosis, repair, and validation for React and .NET repositories.",
+      "version": "0.5.4",
+      "author": {
+        "name": "FixLab Contributors",
+        "url": "https://github.com/MonaDevAI/FixLab"
+      },
+      "homepage": "https://github.com/MonaDevAI/FixLab",
+      "repository": "https://github.com/MonaDevAI/FixLab",
+      "keywords": [
+        "testing",
+        "validation",
+        "react",
+        "dotnet",
+        "playwright",
+        "pull-requests"
+      ],
+      "license": "MIT"
+    },
     {
       "name": "fabric-skills",
       "source": {