diff --git a/README.md b/README.md
index 183430c..9a512fe 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ lock), then read the published index back.
 ```yaml
 - uses: https://git.silverlabs.uk/SilverLABS/ci-actions/fdroid-publish@v1
   with:
-    app: silverchat            # silverchat | silvervpn | silverstore | silvermail | silverbeats
+    app: silverchat            # silverchat | silvervpn | silverstore | silvermail | silverbeats | silvercontacts | silvercalendar
     apk: path/to/app-release.apk
     channel: beta              # default
     version-code: ${{ github.run_number }}   # optional; read from the APK if omitted
diff --git a/fdroid-publish/action.yml b/fdroid-publish/action.yml
index 68ce571..d94d4fc 100644
--- a/fdroid-publish/action.yml
+++ b/fdroid-publish/action.yml
@@ -7,7 +7,7 @@ description: >
   reads the index back afterwards.
 inputs:
   app:
-    description: silverchat | silvervpn | silverstore | silvermail | silverbeats
+    description: silverchat | silvervpn | silverstore | silvermail | silverbeats | silvercontacts | silvercalendar
     required: true
   apk:
     description: Path to the signed APK
diff --git a/fdroid-publish/publish.sh b/fdroid-publish/publish.sh
index 5b1156a..605ffde 100644
--- a/fdroid-publish/publish.sh
+++ b/fdroid-publish/publish.sh
@@ -32,7 +32,9 @@ case "$app" in
   silverstore) pkg=uk.silverlabs.silverstore; cert=f3d835bbd3717f151400b4e0e95212289d585f568690fb05634881f26ec251e4 ;;
   silvermail)  pkg=uk.silverlabs.silvermail;  cert=ccb60c6adc9b015cef88ad9a18a6194178c52754097a3f1d61029b1f6ef32ba2 ;;
   silverbeats) pkg=uk.silverlabs.silverbeats; cert=bed6d769851c415a868863b845807ab41da0d7da0ad82f87797830f487210d60 ;;
-  *) fail "app must be silverchat, silvervpn, silverstore, silvermail or silverbeats (got '$app')" ;;
+  silvercontacts) pkg=uk.silverlabs.silvercontacts; cert=b2818de4d11779d2035cf7fe04a0d716c880f74358a4d3a2c057a851e6c68747 ;;
+  silvercalendar) pkg=uk.silverlabs.silvercalendar; cert=d354792e4b532ee4ff2a21a2807fe048144b12bf3951f7c307bb53dce0ead873 ;;
+  *) fail "app must be silverchat, silvervpn, silverstore, silvermail, silverbeats, silvercontacts or silvercalendar (got '$app')" ;;
 esac
 case "$channel" in
   beta)   root=/srv/fdroid-test; url=https://apps.silverlined.uk/fdroid-test/repo ;;