diff --git a/tools/release/kokoro/macos.cfg b/tools/release/kokoro/macos.cfg
index ff22f270..b52902e5 100644
--- a/tools/release/kokoro/macos.cfg
+++ b/tools/release/kokoro/macos.cfg
@@ -13,3 +13,5 @@
 # limitations under the License.
 
 # Config file for Kokoro (in protobuf text format)
+
+build_file: "grpc-node/packages/grpc-native-core/tools/run_tests/artifacts/workflow.sh"