diff --git a/pkg/de-p1st-xfce4/PKGBUILD b/pkg/de-p1st-xfce4/PKGBUILD
index c6d6622..7e05944 100644
--- a/pkg/de-p1st-xfce4/PKGBUILD
+++ b/pkg/de-p1st-xfce4/PKGBUILD
@@ -45,7 +45,7 @@ depends+=(xfwm4-themes)
 # -> xfce4-artwork
 # -> xfce4-time-out-plugin (take breaks)
 # -> xfce4-timer-plugin
-# -> xfce4-xkb-plugin (switch between keyboard layouts)
+# -> xfce4-xkb-plugin (toggle between keyboard layouts)
 # -> thunar-media-tags-plugin
 depends+=(mousepad xfce4-genmon-plugin xfce4-notifyd xfce4-screensaver xfce4-screenshooter xfce4-weather-plugin xfce4-whiskermenu-plugin)
 #
@@ -122,6 +122,10 @@ optdepends=()
 optdepends+=('seahorse: Manage the contents of GNOME Keyring; manage GPG keys')
 optdepends+=('seahorse-nautilus: PGP encryption and signing for nautilus')
 
+# `Ctrl` + `Ctrl` shortcut to toggle between layouts:
+#   Keyboard > Layout > Change layout option > Both Ctrl together
+optdepends+=('xfce4-xkb-plugin: Panel plugin to toggle between keyboard layouts')
+
 build() {
   # copy nautilus script
   cp md-to-pdf/md-to-pdf "${_reponame}/pkg/${pkgname}"/skel_nautilus/.local/share/nautilus/scripts/md-to-pdf