diff --git a/bazel/grpc_build_system.bzl b/bazel/grpc_build_system.bzl
index 095b1596c88..a56db77d75c 100644
--- a/bazel/grpc_build_system.bzl
+++ b/bazel/grpc_build_system.bzl
@@ -110,7 +110,7 @@ def grpc_proto_library(name, srcs = [], deps = [], well_known_protos = False,
     generate_mocks = generate_mocks,
   )
 
-def grpc_cc_test(name, srcs = [], deps = [], external_deps = [], args = [], data = [], uses_polling = True, language = "C++", size = "medium", timeout = "moderate"):
+def grpc_cc_test(name, srcs = [], deps = [], external_deps = [], args = [], data = [], uses_polling = True, language = "C++", size = "medium", timeout = "moderate", tags = []):
   copts = []
   if language.upper() == "C":
     copts = if_not_windows(["-std=c99"])
@@ -140,6 +140,7 @@ def grpc_cc_test(name, srcs = [], deps = [], external_deps = [], args = [], data
           poller,
           '$(location %s)' % name,
         ] + args['args'],
+        tags = tags,
       )
   else:
     native.cc_test(**args)
diff --git a/test/core/iomgr/BUILD b/test/core/iomgr/BUILD
index 349a06d5780..bbf0815e6f0 100644
--- a/test/core/iomgr/BUILD
+++ b/test/core/iomgr/BUILD
@@ -227,6 +227,7 @@ grpc_cc_test(
         "//test/core/util:gpr_test_util",
         "//test/core/util:grpc_test_util",
     ],
+    tags = ["manual"],    # TODO(adelez): Remove once this works on Foundry.
 )
 
 grpc_cc_test(