diff --git a/.claude-plugin/marketplace.json b/.claude-plugin/marketplace.json
index 2426006..855e4cf 100644
--- a/.claude-plugin/marketplace.json
+++ b/.claude-plugin/marketplace.json
@@ -11,7 +11,8 @@
       "description": "Deprecated alias for basecamp-cli, kept so existing installs keep working. Install basecamp-cli instead, or run `basecamp setup` to switch.",
       "source": {
         "source": "url",
-        "url": "https://github.com/basecamp/basecamp-cli.git"
+        "url": "https://github.com/basecamp/basecamp-cli.git",
+        "ref": "stable"
       },
       "category": "productivity"
     },
@@ -20,7 +21,8 @@
       "description": "CLI-based Basecamp for Claude Code and Codex, driven by the basecamp command. Create todos, track work, link code to projects.",
       "source": {
         "source": "url",
-        "url": "https://github.com/basecamp/basecamp-cli.git"
+        "url": "https://github.com/basecamp/basecamp-cli.git",
+        "ref": "stable"
       },
       "category": "productivity"
     },
diff --git a/README.md b/README.md
index 3d92acd..6e1dc3a 100644
--- a/README.md
+++ b/README.md
@@ -26,10 +26,18 @@ once it's listed.
 
 | Plugin | Description |
 |--------|-------------|
-| [basecamp-cli](https://github.com/basecamp/basecamp-cli/tree/main/.claude-plugin) | Basecamp through the `basecamp` command, for Claude Code and Codex. Todos, cards, messages, files, schedule, check-ins, timeline, recordings, templates, webhooks, subscriptions, lineup, and campfire; links code to projects. |
+| [basecamp-cli](https://github.com/basecamp/basecamp-cli/tree/stable/.claude-plugin) | Basecamp through the `basecamp` command, for Claude Code and Codex. Todos, cards, messages, files, schedule, check-ins, timeline, recordings, templates, webhooks, subscriptions, lineup, and campfire; links code to projects. |
 | [hey](https://github.com/basecamp/hey-cli) | Read email, manage todos, track time. |
 | [fizzy](https://github.com/basecamp/fizzy-cli) | Manage boards and cards, track work, link code to projects. |
 
+### basecamp-cli installs from its `stable` branch
+
+The `basecamp-cli` entry, and its `basecamp` alias, install from
+basecamp-cli's `stable` branch rather than `main`. The plugin's skills run the
+`basecamp` command, which people install from releases, so the skills have to
+match a release too. basecamp-cli's release workflow fast-forwards `stable` to
+each stable release once it has published, so a release changes nothing here.
+
 ### `basecamp` is now `basecamp-cli`
 
 The CLI plugin used to be `basecamp@37signals`. It's now