diff --git a/build/build-clang/clang-14.json b/build/build-clang/clang-14.json
index c0190e920cd52..cabe98b492319 100644
--- a/build/build-clang/clang-14.json
+++ b/build/build-clang/clang-14.json
@@ -11,7 +11,6 @@
         "win64-no-symlink.patch",
         "D116995.diff",
         "revert-llvmorg-14-init-14141-gd6d3000a2f6d.patch",
-        "revert-llvmorg-14-init-11890-gf86deb18cab6.patch",
-        "llvmorg-15-init-283-g4db89e23190d.patch"
+        "revert-llvmorg-14-init-11890-gf86deb18cab6.patch"
     ]
 }
diff --git a/build/build-clang/llvmorg-15-init-283-g4db89e23190d.patch b/build/build-clang/llvmorg-15-init-283-g4db89e23190d.patch
deleted file mode 100644
index 0c3a3c8b2df63..0000000000000
--- a/build/build-clang/llvmorg-15-init-283-g4db89e23190d.patch
+++ /dev/null
@@ -1,27 +0,0 @@
-From 4db89e23190d1d1590d88df08056d327e651c94c Mon Sep 17 00:00:00 2001
-From: Shoaib Meenai <smeenai@fb.com>
-Date: Thu, 3 Feb 2022 13:39:54 -0800
-Subject: [PATCH] [cmake] Increase -fms-compatibility-version in Windows
- toolchain file
-
-Make it match LLVM's new minimum requirement (after https://reviews.llvm.org/D114639).
----
- llvm/cmake/platforms/WinMsvc.cmake | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/llvm/cmake/platforms/WinMsvc.cmake b/llvm/cmake/platforms/WinMsvc.cmake
-index d30701a31858..ebb4da419e46 100644
---- a/llvm/cmake/platforms/WinMsvc.cmake
-+++ b/llvm/cmake/platforms/WinMsvc.cmake
-@@ -259,7 +259,7 @@ set(CROSS_TOOLCHAIN_FLAGS_NATIVE "${_CTF_NATIVE_DEFAULT}" CACHE STRING "")
- set(COMPILE_FLAGS
-     -D_CRT_SECURE_NO_WARNINGS
-     --target=${TRIPLE_ARCH}-windows-msvc
--    -fms-compatibility-version=19.14
-+    -fms-compatibility-version=19.20
-     -imsvc "${ATLMFC_INCLUDE}"
-     -imsvc "${MSVC_INCLUDE}"
-     -imsvc "${WINSDK_INCLUDE}/ucrt"
--- 
-2.35.0.1.g829a698654
-
diff --git a/taskcluster/ci/fetch/toolchains.yml b/taskcluster/ci/fetch/toolchains.yml
index 05e8652d22d61..5a9dfbcbb46a1 100644
--- a/taskcluster/ci/fetch/toolchains.yml
+++ b/taskcluster/ci/fetch/toolchains.yml
@@ -350,11 +350,11 @@ clang-5.0:
         revision: 6a075b6de4cafebec9ca1ff9eec7229a617c93f6
 
 clang-14:
-    description: clang 14.0.3 source code
+    description: clang 14.0.4 source code
     fetch:
         type: git
         repo: https://github.com/llvm/llvm-project
-        revision: 1f9140064dfbfb0bbda8e51306ea51080b2f7aac
+        revision: 29f1039a7285a5c3a9c353d054140bf2556d4c4d
 
 clang-trunk:
     description: clang main branch source code