diff --git a/moz.configure b/moz.configure
index 42af0e32894f..b6d76e4dc6d8 100755
--- a/moz.configure
+++ b/moz.configure
@@ -208,9 +208,18 @@ def moz_fetches_dir(value):
         return value[0]
 
 
+@depends(host, milestone.is_nightly, "MOZ_AUTOMATION")
+def bootstrap_default(host, is_nightly, automation):
+    if automation:
+        return False
+    if host.cpu == "aarch64" and host.os == "OSX" and is_nightly:
+        return True
+
+
 option(
     "--enable-bootstrap",
-    help="Automatically bootstrap or update some toolchains",
+    default=bootstrap_default,
+    help="{Automatically bootstrap or update some toolchains|Disable bootstrap or update of toolchains}",
 )