--- a/PKGBUILD
+++ b/PKGBUILD
@@ -55,6 +55,12 @@
 conflicts=('chatgpt')
 options=('!debug' '!strip')
 
+# Omarchy: the build image compresses with zstd at its default level, which
+# leaves this 1.3 GB Electron tree at 447 MB. Maximum zstd takes it to 322 MB
+# for ~4 extra minutes of build time -- worth it for a package this large that
+# every user re-downloads on each of OpenAI's frequent releases.
+COMPRESSZST=(zstd -c -z -q --ultra -22 --threads=0 -)
+
 _deb_x86_64="chatgpt_${pkgver}_amd64.deb"
 _deb_aarch64="chatgpt_${pkgver}_arm64.deb"
 source=('chatgpt-launcher.sh')