1 files changed, 9 insertions, 0 deletions

diff --git a/support/doc/tools.md b/support/doc/tools.md
index 0addc0803..cb3944595 100644
--- a/support/doc/tools.md
+++ b/support/doc/tools.md
@@ -113,4 +113,13 @@ To delete them (a confirmation will be demanded first):
 
 ```
 $ sudo -u peertube NODE_CONFIG_DIR=/var/www/peertube/config NODE_ENV=production npm run prune-storage
+```
+
+### update-host.js
+
+If you started PeerTube with a domain, and then changed it you will have invalid torrent files and invalid URLs in your database.
+To fix this, you have to run:
+
+```
+$ sudo -u peertube NODE_CONFIG_DIR=/var/www/peertube/config NODE_ENV=production npm run update-host
 ```
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