diff --git a/packages/grpc-tools/build_binaries.sh b/packages/grpc-tools/build_binaries.sh
index e4488108..c05d7da8 100755
--- a/packages/grpc-tools/build_binaries.sh
+++ b/packages/grpc-tools/build_binaries.sh
@@ -46,8 +46,14 @@ artifacts() {
   platform=$1
   arch=$2
   dir=$3
-
-  tar -czf $out_dir/$platform-$arch.tar.gz -C $(dirname $dir) $(basename $dir)
+  case $(uname -s) in
+    Linux)
+      tar -czf $out_dir/$platform-$arch.tar.gz -C $(dirname $dir) $(basename $dir)
+      ;;
+    Darwin)
+      tar --format=gnutar -czf $out_dir/$platform-$arch.tar.gz -C $(dirname $dir) $(basename $dir)
+      ;;
+  esac
 }
 
 case $(uname -s) in
diff --git a/packages/grpc-tools/package.json b/packages/grpc-tools/package.json
index 333ef1eb..2d10b927 100644
--- a/packages/grpc-tools/package.json
+++ b/packages/grpc-tools/package.json
@@ -1,6 +1,6 @@
 {
   "name": "grpc-tools",
-  "version": "1.12.0",
+  "version": "1.12.1",
   "author": "Google Inc.",
   "description": "Tools for developing with gRPC on Node.js",
   "homepage": "https://grpc.io/",