diff --git a/doc/04-schema.md b/doc/04-schema.md
index fcb960d3b..90f83f979 100644
--- a/doc/04-schema.md
+++ b/doc/04-schema.md
@@ -238,6 +238,7 @@ Support information includes the following:
 * **irc:** IRC channel for support, as irc://server/channel.
 * **source:** URL to browse or download the sources.
 * **docs:** URL to the documentation.
+* **rss:** URL to the RSS feed.
 
 An example:
 
diff --git a/res/composer-schema.json b/res/composer-schema.json
index 8b9a40465..e943b825c 100644
--- a/res/composer-schema.json
+++ b/res/composer-schema.json
@@ -465,6 +465,11 @@
                     "type": "string",
                     "description": "URL to the documentation.",
                     "format": "uri"
+                },
+                "rss": {
+                    "type": "string",
+                    "description": "URL to the RSS feed.",
+                    "format": "uri"
                 }
             }
         },