diff --git a/docs/platforms/mac/release.md b/docs/platforms/mac/release.md
index 32959dfc586..18c9e32995f 100644
--- a/docs/platforms/mac/release.md
+++ b/docs/platforms/mac/release.md
@@ -29,7 +29,7 @@ Notes:
 - `APP_BUILD` maps to `CFBundleVersion`/`sparkle:version`; keep it numeric + monotonic (no `-beta`), or Sparkle compares it as equal.
 - If `APP_BUILD` is omitted, `scripts/package-mac-app.sh` derives a Sparkle-safe default from `APP_VERSION` (`YYYYMMDDNN`: stable defaults to `90`, prereleases use a suffix-derived lane) and uses the higher of that value and git commit count.
 - You can still override `APP_BUILD` explicitly when release engineering needs a specific monotonic value.
-- Defaults to the current architecture (`$(uname -m)`). For release/universal builds, set `BUILD_ARCHS="arm64 x86_64"` (or `BUILD_ARCHS=all`).
+- For `BUILD_CONFIG=release`, `scripts/package-mac-app.sh` now defaults to universal (`arm64 x86_64`) automatically. You can still override with `BUILD_ARCHS=arm64` or `BUILD_ARCHS=x86_64`. For local/dev builds (`BUILD_CONFIG=debug`), it defaults to the current architecture (`$(uname -m)`).
 - Use `scripts/package-mac-dist.sh` for release artifacts (zip + DMG + notarization). Use `scripts/package-mac-app.sh` for local/dev packaging.
 
 ```bash