diff --git a/README.md b/README.md
index b3a28fe1..7af0ea68 100644
--- a/README.md
+++ b/README.md
@@ -83,6 +83,60 @@ Two types of flatpak overrides are provided to grant additional permissions to s
 
 These overrides are automatically applied to new user accounts through the `/etc/skel` template.
 
+### Flatpak Update Schedule
+
+Automatic updates are handled by `uupd`, which updates the system image,
+Flatpaks, Distrobox containers, and Homebrew together. To keep image updates
+enabled while choosing a different Flatpak cadence, disable only uupd's
+Flatpak module:
+
+```bash
+sudo install -d -m 0755 /etc/uupd
+tmp="$(mktemp)"
+trap 'rm -f "$tmp"' EXIT
+if sudo test -s /etc/uupd/config.json; then
+    sudo jq '.modules.flatpak.disable = true' /etc/uupd/config.json >"$tmp"
+else
+    printf '%s\n' '{"modules":{"flatpak":{"disable":true}}}' >"$tmp"
+fi
+sudo install -m 0644 "$tmp" /etc/uupd/config.json
+```
+
+This requires `jq` when an existing uupd configuration must be preserved. The
+configuration is read on each uupd run, so it applies to the next scheduled
+update. Do not edit `/usr/lib/systemd/system/uupd.timer`; image updates replace
+files there.
+
+After disabling the module, create local systemd service and timer units under
+`/etc/systemd/system` (or user units under `~/.config/systemd/user`) that run
+`flatpak update --system --noninteractive` and/or
+`flatpak update --user --noninteractive` at the cadence you want. For example,
+this system-wide timer runs Flatpak updates every 60 days:
+
+```ini
+# /etc/systemd/system/flatpak-system-update.service
+[Service]
+Type=oneshot
+ExecStart=/usr/bin/flatpak update --system --noninteractive
+```
+
+```ini
+# /etc/systemd/system/flatpak-system-update.timer
+[Timer]
+OnBootSec=15min
+OnUnitActiveSec=60d
+Persistent=true
+
+[Install]
+WantedBy=timers.target
+```
+
+Enable it with `sudo systemctl daemon-reload` and
+`sudo systemctl enable --now flatpak-system-update.timer`. Keep custom units
+under `/etc` or `~/.config` so they survive image updates. Set
+`modules.flatpak.disable` to `false` or remove it to return Flatpak updates to
+the normal `uupd.timer` schedule.
+
 ## Brewfiles
 
 The `/usr/share/ublue-os/homebrew/` directory contains curated application bundles installable via [bbrew](https://github.com/Valkyrie00/homebrew-bbrew):