diff --git a/doc/catalog.json b/doc/catalog.json
index 795fb7d5bf8ce777d2ea3834485aafadc9ccb166..6c65691e90743e6d8c5ad405902b6a9e494a1c88 100644
--- a/doc/catalog.json
+++ b/doc/catalog.json
@@ -5,5 +5,13 @@
       "latest": "https://clapper.readthedocs.io/en/latest/"
     },
     "sources": {}
+  },
+  "lightning": {
+    "versions": {
+      "stable": "https://lightning.ai/docs/pytorch/stable/"
+    },
+    "sources": {
+      "environment": "lightning"
+    }
   }
 }