diff --git a/home/.zshrc.local b/home/.zshrc.local
index 5720689..98c6314 100644
--- a/home/.zshrc.local
+++ b/home/.zshrc.local
@@ -125,6 +125,14 @@ function mkvextract-all-attachments() {
     mkvextract $1 attachments $(mkvmerge --identify $1|grep "Attachment ID"|sed "s/Attachment ID \([0-9]*\): .*/\1/")
 }
 
+function mkvpropedit-add-attachments() (
+    file="$1"
+    shift
+    for attachment in $@; do
+        mkvpropedit --attachment-mime-type font/sfnt --add-attachment "$attachment" "$file"
+    done
+)
+
 function ssim() {
     ffmpeg -loglevel fatal -i "$1" -i "$2" -lavfi 'ssim=/dev/stdout' -f null -
 }