diff --git a/build.sh b/build.sh
index f91e6d1..000febe 100644
--- a/build.sh
+++ b/build.sh
@@ -9,6 +9,6 @@ npm i
 npm run build -- contents::iosevka-acicchetti
 
 cd dist/iosevka-acicchetti/ttf/
-tar avf iosevka-acicchetti-$(date -I).tzst *.ttf
+tar cvf iosevka-acicchetti-$(date -I).tzst --zstd *.ttf
 
 wormhole send *.tzst