diff --git a/README.MD b/README.MD
index 98056e4..21bcf8c 100644
--- a/README.MD
+++ b/README.MD
@@ -2,5 +2,6 @@ Requirements:
 
 - ffmpeg
 - imagemagick
+- zenity
 
 Put the script in ~/.local/share/nautilus/scripts/
\ No newline at end of file