diff --git a/config/exports b/config/exports
index 2f4f967..11a65e0 100755
--- a/config/exports
+++ b/config/exports
@@ -34,6 +34,18 @@ have()
   bkt -- which "$1" >&/dev/null
 }
 
+# function to run dark-notify and change alacritty theme
+# it uses flock to prevent running multiple instances
+# install flock with `brew install flock` on macOS
+function darknotify-alacritty {
+  have flock && [[ -f /tmp/dark-notify-alacritty.lock ]] && return
+  have dark-notify && {
+    # true is used to prevent the command show it was backgrounded
+    true & flock /tmp/dark-notify-alacritty.lock dark-notify -c "$HOME/.dotfiles/local/bin/x-change-alacritty-theme" &
+  }
+}
+darknotify-alacritty
+
 brew_installed()
 {
   bkt -- brew list