diff --git a/third_party/grpc/BUILD b/third_party/grpc/BUILD
index 4d026ababa706e..d8f64ef471beb6 100644
--- a/third_party/grpc/BUILD
+++ b/third_party/grpc/BUILD
@@ -28,8 +28,6 @@ license(
 )
 
 exports_files([
-    "grpc_1.47.0.patch",
-    "grpc_1.47.0.win_arm64.patch",
     "grpc_1.48.1.patch",
     "grpc_1.48.1.win_arm64.patch",
 ])
diff --git a/third_party/grpc/grpc_1.47.0.patch b/third_party/grpc/grpc_1.47.0.patch
deleted file mode 100644
index 6e54417a53585d..00000000000000
--- a/third_party/grpc/grpc_1.47.0.patch
+++ /dev/null
@@ -1,99 +0,0 @@
-diff --git a/bazel/grpc_build_system.bzl b/bazel/grpc_build_system.bzl
-index 7bb6b8bdb9..7644107b70 100644
---- a/bazel/grpc_build_system.bzl
-+++ b/bazel/grpc_build_system.bzl
-@@ -30,8 +30,6 @@
- load("//bazel:cc_grpc_library.bzl", "cc_grpc_library")
- load("//bazel:copts.bzl", "GRPC_DEFAULT_COPTS")
- load("@upb//bazel:upb_proto_library.bzl", "upb_proto_library", "upb_proto_reflection_library")
--load("@build_bazel_rules_apple//apple:ios.bzl", "ios_unit_test")
--load("@build_bazel_rules_apple//apple/testing/default_runner:ios_test_runner.bzl", "ios_test_runner")
-
- # The set of pollers to test against if a test exercises polling
- POLLERS = ["epoll1", "poll"]
-@@ -237,10 +235,6 @@
-     test_lib_ios = name + "_test_lib_ios"
-     ios_tags = tags + ["manual", "ios_cc_test"]
-     test_runner = "ios_x86_64_sim_runner_" + name
--    ios_test_runner(
--        name = test_runner,
--        device_type = "iPhone X",
--    )
-     if not any([t for t in tags if t.startswith("no_test_ios")]):
-         native.objc_library(
-             name = test_lib_ios,
-@@ -253,15 +247,6 @@
-             testonly = 1,
-         )
-         ios_test_deps = [":" + test_lib_ios]
--        ios_unit_test(
--            name = name + "_on_ios",
--            size = kwargs.get("size"),
--            data = kwargs.get("data"),
--            tags = ios_tags,
--            minimum_os_version = "9.0",
--            runner = test_runner,
--            deps = ios_test_deps,
--        )
-
- def expand_tests_for_each_poller_and_engine(name, srcs, deps, tags, args, exclude_pollers, uses_event_engine):
-     """Common logic used to parameterize tests for every poller and EventEngine.
-@@ -603,4 +588,4 @@
-     native.config_setting(
-         name = "python3",
-         flag_values = {"@bazel_tools//tools/python:python_version": "PY3"},
--    )
-+    )
-diff --git a/bazel/grpc_deps.bzl b/bazel/grpc_deps.bzl
-index 09fcad95a2..9b737e5deb 100644
---- a/bazel/grpc_deps.bzl 
-+++ b/bazel/grpc_deps.bzl
-@@ -82,7 +82,7 @@
-
-     native.bind(
-         name = "madler_zlib",
--        actual = "@zlib//:zlib",
-+        actual = "@//third_party/zlib",
-     )
-
-     native.bind(
-diff --git a/bazel/grpc_extra_deps.bzl b/bazel/grpc_extra_deps.bzl
-index 09fcad95a2..9b737e5deb 100644
---- a/bazel/grpc_extra_deps.bzl
-+++ b/bazel/grpc_extra_deps.bzl
-@@ -13,14 +13,9 @@
- # limitations under the License.
- """Loads the dependencies necessary for the external repositories defined in grpc_deps.bzl."""
-
--load("@bazel_gazelle//:deps.bzl", "gazelle_dependencies")
--load("@build_bazel_apple_support//lib:repositories.bzl", "apple_support_dependencies")
--load("@build_bazel_rules_apple//apple:repositories.bzl", "apple_rules_dependencies")
- load("@com_envoyproxy_protoc_gen_validate//:dependencies.bzl", "go_third_party")
- load("@com_google_googleapis//:repository_rules.bzl", "switched_rules_by_language")
- load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps")
--load("@envoy_api//bazel:repositories.bzl", "api_dependencies")
--load("@io_bazel_rules_go//go:deps.bzl", "go_register_toolchains", "go_rules_dependencies")
- load("@upb//bazel:workspace_deps.bzl", "upb_deps")
-
- def grpc_extra_deps(ignore_version_differences = False):
-@@ -50,20 +45,6 @@
-
-     upb_deps()
-
--    api_dependencies()
--
--    go_rules_dependencies()
--    go_register_toolchains(version = "1.18")
--    gazelle_dependencies()
--
--    # Pull-in the go 3rd party dependencies for protoc_gen_validate, which is
--    # needed for building C++ xDS protos
--    go_third_party()
--
--    apple_rules_dependencies(ignore_version_differences = ignore_version_differences)
--
--    apple_support_dependencies()
--
-     # Initialize Google APIs with only C++ and Python targets
-     switched_rules_by_language(
-         name = "com_google_googleapis_imports",
diff --git a/third_party/grpc/grpc_1.47.0.win_arm64.patch b/third_party/grpc/grpc_1.47.0.win_arm64.patch
deleted file mode 100644
index 7d505ab43ce18e..00000000000000
--- a/third_party/grpc/grpc_1.47.0.win_arm64.patch
+++ /dev/null
@@ -1,25 +0,0 @@
-From 6ce08c3da545358074eb66dc4202e0474fa5be1b Mon Sep 17 00:00:00 2001
-From: Niyas Sait <niyas.sait@linaro.org>
-Date: Fri, 26 Nov 2021 02:43:37 -0800
-Subject: [PATCH] add workarounds to compile for win/arm64
-
----
- src/core/lib/transport/transport.cc | 8 ++++----
- third_party/cares/cares.BUILD       | 2 +-
- 2 files changed, 5 insertions(+), 5 deletions(-)
-
-diff --git a/third_party/cares/cares.BUILD b/third_party/cares/cares.BUILD
-index 7939021a25..430791aa8d 100644
---- a/third_party/cares/cares.BUILD
-+++ b/third_party/cares/cares.BUILD
-@@ -22,7 +22,7 @@ config_setting(
-
- config_setting(
-     name = "windows",
--    values = {"cpu": "x64_windows"},
-+    constraint_values = ["@platforms//os:windows"],
- )
-
- # Android is not officially supported through C++.
---
-2.33.0.windows.2
\ No newline at end of file