diff --git a/README.md b/README.md
index 001b532..c7e7010 100644
--- a/README.md
+++ b/README.md
@@ -82,4 +82,9 @@ with the `aports/` overlay in this repository:
   share one PDN).
 - `main/postmarketos-config-nftables` — adds the `-imsd` subpackage accepting
   imsd's IPsec-protected SIP ports on the IMS PDN (auto-installed alongside
-  imsd).
\ No newline at end of file
+  imsd).
+- `device/catcrafts-fp6-repo` — subscribes the installed system to the
+  [Catcrafts apk registry](https://forgejo.catcrafts.net/Catcrafts/-/packages)
+  (signing key + `/etc/apk/repositories` entry). CI publishes every built
+  package there, so `apk upgrade` delivers kernel/imsd/GNSS updates between
+  image releases.
\ No newline at end of file
diff --git a/build.sh b/build.sh
index 34d1141..555b8d0 100755
--- a/build.sh
+++ b/build.sh
@@ -152,7 +152,7 @@ aports = $WORK/pmaports
 device = fairphone-fp6
 ui = plasma-mobile
 systemd = always
-extra_packages = soc-fairphone-fp6-audio,callaudioshim,imsd,fp6-device-tweaks,postmarketos-base-ui-audio-backend-pipewire,pipewire-pulse,pipewire-echo-cancel
+extra_packages = soc-fairphone-fp6-audio,callaudioshim,imsd,fp6-device-tweaks,catcrafts-fp6-repo,postmarketos-base-ui-audio-backend-pipewire,pipewire-pulse,pipewire-echo-cancel
 EOF
 
 pmbootstrap checksum linux-postmarketos-qcom-milos