diff --git a/install.sh b/install.sh
index 6a062fdb..e42433ad 100755
--- a/install.sh
+++ b/install.sh
@@ -1,7 +1,5 @@
 #!/bin/sh
 set -e
-# Code generated by godownloader on 2020-08-10T20:55:46Z.
-#
 
 usage() {
   this=$1
@@ -23,7 +21,7 @@ EOF
 }
 
 parse_args() {
-  #BINDIR is ./bin unless set be ENV
+  # BINDIR is ./bin unless set be ENV
   # over-ridden by flag below
 
   BINDIR=${BINDIR:-./bin}
@@ -99,6 +97,9 @@ adjust_format() {
     darwin) FORMAT=dmg ;;
     windows) FORMAT=zip ;;
   esac
+  case "${PLATFORM}" in
+    darwin/arm64) FORMAT=zip ;;
+  esac
   true
 }
 adjust_os() {