diff --git a/README.md b/README.md
index 9e4e592..b6a7cbc 100644
--- a/README.md
+++ b/README.md
@@ -40,3 +40,20 @@ Requirements
 ============
 
 Etherpad 1.8.1
+
+## Installation
+
+Install from the Etherpad admin UI (**Admin → Manage Plugins**,
+search for `ep_markdown` and click *Install*), or from the Etherpad
+root directory:
+
+```sh
+pnpm run plugins install ep_markdown
+```
+
+> ⚠️ Don't run `npm i` / `npm install` yourself from the Etherpad
+> source tree — Etherpad tracks installed plugins through its own
+> plugin-manager, and hand-editing `package.json` can leave the
+> server unable to start.
+
+After installing, restart Etherpad.