diff --git a/README.md b/README.md
index 976010b..bece9dd 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # GitLab Pierre
 
-Chrome extension that replaces the `gitlab.com` changes view with Pierre-powered diffs and a Pierre-powered changed-files tree.
+Chrome extension that replaces GitLab changes views with Pierre-powered diffs and a Pierre-powered changed-files tree, including self-hosted GitLab instances.
 
 <img width="3128" height="1688" alt="Google Chrome-2026-05-05-18 38 14" src="https://github.com/user-attachments/assets/4a3b0039-03a2-4493-8d67-d819bfd98e7f" />
 
@@ -19,9 +19,9 @@ Load the generated `dist/` directory in Chrome:
 
 ## Supported pages
 
-- Merge request changes: `https://gitlab.com/<namespace>/<project>/-/merge_requests/<iid>/diffs`
-- Commits: `https://gitlab.com/<namespace>/<project>/-/commit/<sha>`
-- Compares: `https://gitlab.com/<namespace>/<project>/-/compare/<from>...<to>`
+- Merge request changes: `https://<gitlab-host>/<namespace>/<project>/-/merge_requests/<iid>/diffs`
+- Commits: `https://<gitlab-host>/<namespace>/<project>/-/commit/<sha>`
+- Compares: `https://<gitlab-host>/<namespace>/<project>/-/compare/<from>...<to>`
 
 The manifest-declared content script is a small bootstrap. It dynamically loads the Pierre app bundle from the extension, fetches GitLab's same-origin raw `.diff` endpoint, parses it with `@pierre/diffs`, renders each parsed file with Pierre's `<FileDiff />`, and renders the changed file list with `@pierre/trees`.
 
diff --git a/public/manifest.json b/public/manifest.json
index 1511b7f..58b502a 100644
--- a/public/manifest.json
+++ b/public/manifest.json
@@ -5,18 +5,25 @@
   "version": "0.4.30",
   "content_scripts": [
     {
-      "matches": ["https://gitlab.com/*"],
+      "matches": [
+        "https://*/*/-/merge_requests/*/diffs*",
+        "https://*/*/-/commit/*",
+        "https://*/*/-/compare/*"
+      ],
       "js": ["content.js"],
       "css": ["content.css"],
       "run_at": "document_idle"
     }
   ],
-  "host_permissions": ["https://gitlab.com/*"],
   "permissions": ["storage"],
   "web_accessible_resources": [
     {
       "resources": ["pierre-app.js", "*.js"],
-      "matches": ["https://gitlab.com/*"]
+      "matches": [
+        "https://*/*/-/merge_requests/*/diffs*",
+        "https://*/*/-/commit/*",
+        "https://*/*/-/compare/*"
+      ]
     }
   ]
 }