diff --git a/tools/internal_ci/macos/grpc_basictests_ruby.cfg b/tools/internal_ci/macos/grpc_basictests_ruby.cfg
index 3a28f97a54b..51b4d87e0a4 100644
--- a/tools/internal_ci/macos/grpc_basictests_ruby.cfg
+++ b/tools/internal_ci/macos/grpc_basictests_ruby.cfg
@@ -15,7 +15,7 @@
 # Config file for the internal CI (in protobuf text format)
 
 # Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/macos/grpc_run_tests_matrix.sh"
+build_file: "grpc/tools/internal_ci/macos/grpc_basictests_ruby.sh"
 gfile_resources: "/bigstore/grpc-testing-secrets/gcp_credentials/GrpcTesting-d0eeee2db331.json"
 timeout_mins: 60
 action {
diff --git a/tools/internal_ci/macos/grpc_basictests_ruby.sh b/tools/internal_ci/macos/grpc_basictests_ruby.sh
new file mode 100755
index 00000000000..d83cd1e61c0
--- /dev/null
+++ b/tools/internal_ci/macos/grpc_basictests_ruby.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+# Copyright 2019 The gRPC Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -ex
+
+export PREPARE_BUILD_INSTALL_DEPS_RUBY=true
+$(dirname $0)/grpc_run_tests_matrix.sh
diff --git a/tools/internal_ci/macos/pull_request/grpc_basictests_ruby.cfg b/tools/internal_ci/macos/pull_request/grpc_basictests_ruby.cfg
index 5729bf8f751..1b60ddef9b0 100644
--- a/tools/internal_ci/macos/pull_request/grpc_basictests_ruby.cfg
+++ b/tools/internal_ci/macos/pull_request/grpc_basictests_ruby.cfg
@@ -15,7 +15,7 @@
 # Config file for the internal CI (in protobuf text format)
 
 # Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/macos/grpc_run_tests_matrix.sh"
+build_file: "grpc/tools/internal_ci/macos/grpc_basictests_ruby.sh"
 gfile_resources: "/bigstore/grpc-testing-secrets/gcp_credentials/GrpcTesting-d0eeee2db331.json"
 timeout_mins: 60
 action {