diff --git a/expose.sh b/expose.sh
index 3aa8d3d..b772610 100755
--- a/expose.sh
+++ b/expose.sh
@@ -76,6 +76,12 @@ ffmpeg_threads=${ffmpeg_threads:-0} # the -threads option for ffmpeg encode (0=a
 
 command -v convert >/dev/null 2>&1 || { echo "ImageMagick is a required dependency, aborting..." >&2; exit 1; }
 command -v identify >/dev/null 2>&1 || { echo "ImageMagick is a required dependency, aborting..." >&2; exit 1; }
+command -v rsync >/dev/null 2>&1 || { echo "rsync is a required dependency, aborting..." >&2; exit 1; }
+
+if [ "$download_button" = true ]
+then
+	command -v zip >/dev/null 2>&1 || { echo "zip is a required dependency, aborting..." >&2; exit 1; }
+fi
 
 # file extensions for each video format
 video_format_extensions=("h264" "mp4" "h265" "mp4" "vp9" "webm" "vp8" "webm" "ogv" "ogv")
diff --git a/readme.md b/readme.md
index d5a4fb0..424f696 100644
--- a/readme.md
+++ b/readme.md
@@ -16,7 +16,7 @@ tested on Windows/Cygwin, OSX, and should be fine on Linux
 
 ### Installation
 
-The only dependency is Imagemagick. For videos FFmpeg is also required.
+The dependencies are Imagemagick, zip and rsync. For videos FFmpeg is also required.
 
 Download the repo and alias the script