diff --git a/README.md b/README.md
index dec405a..b831e47 100644
--- a/README.md
+++ b/README.md
@@ -101,6 +101,21 @@ Then open `http://<your-server>:8080` and create the administrator account. As a
 - **Data** lives in the `mrterm-data` volume (`/data` in the container). Back it up regularly. A restored vault still needs its user's password to open.
 - **SSH connections** start from the server, so the server must be able to reach your hosts.
 
+### Updating the web version
+
+Run these commands in the folder that contains your `docker-compose.yml`:
+
+```bash
+docker compose build --pull --no-cache
+docker compose up -d
+```
+
+This fetches the latest MrTerm from the repository, rebuilds the image and restarts the container. Your users and vaults stay in the `mrterm-data` volume and are kept. Everyone has to sign in again after the restart.
+
+To check which version is running, look at the bottom of the sign-in page. If a release note mentions changes to `docker-compose.yml`, download it again first (`curl -O …` as above) and copy over your own changes, such as ports or `TRUST_PROXY`.
+
+To remove images left over from earlier builds: `docker image prune`.
+
 ## Getting started
 
 1. Click **New host**, enter the address, username and password or key, and click **Save**.