diff --git a/tools/internal_ci/macos/grpc_basictests_c_cpp.cfg b/tools/internal_ci/macos/grpc_basictests_c_cpp.cfg
index f16e3e8ee68..3d6678817b8 100644
--- a/tools/internal_ci/macos/grpc_basictests_c_cpp.cfg
+++ b/tools/internal_ci/macos/grpc_basictests_c_cpp.cfg
@@ -17,7 +17,7 @@
 # Location of the continuous shell script in repository.
 build_file: "grpc/tools/internal_ci/macos/grpc_run_tests_matrix.sh"
 gfile_resources: "/bigstore/grpc-testing-secrets/gcp_credentials/GrpcTesting-d0eeee2db331.json"
-timeout_mins: 120
+timeout_mins: 180
 action {
   define_artifacts {
     regex: "**/*sponge_log.*"