diff --git a/libcxx/test/libcxx/memory/aligned_allocation_macro.compile.pass.cpp b/libcxx/test/libcxx/memory/aligned_allocation_macro.compile.pass.cpp
--- a/libcxx/test/libcxx/memory/aligned_allocation_macro.compile.pass.cpp
+++ b/libcxx/test/libcxx/memory/aligned_allocation_macro.compile.pass.cpp
@@ -9,6 +9,9 @@
 // UNSUPPORTED: c++03, c++11, c++14
 // XFAIL: availability-aligned_allocation-missing
 
+// https://reviews.llvm.org/D129198 is not in AppleClang 14
+// XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.13{{(.0)?}} && apple-clang-14
+
 #include <new>
 
 #include "test_macros.h"
diff --git a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align.pass.cpp b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align.pass.cpp
--- a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align.pass.cpp
+++ b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align.pass.cpp
@@ -16,6 +16,9 @@
 // We get availability markup errors when aligned allocation is missing
 // XFAIL: availability-aligned_allocation-missing
 
+// https://reviews.llvm.org/D129198 is not in AppleClang 14
+// XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.13{{(.0)?}} && apple-clang-14
+
 // Libc++ when built for z/OS doesn't contain the aligned allocation functions,
 // nor does the dynamic library shipped with z/OS.
 // UNSUPPORTED: target={{.+}}-zos{{.*}}
diff --git a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align.replace.indirect.pass.cpp b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align.replace.indirect.pass.cpp
--- a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align.replace.indirect.pass.cpp
+++ b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align.replace.indirect.pass.cpp
@@ -18,6 +18,9 @@
 // We get availability markup errors when aligned allocation is missing
 // XFAIL: availability-aligned_allocation-missing
 
+// https://reviews.llvm.org/D129198 is not in AppleClang 14
+// XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.13{{(.0)?}} && apple-clang-14
+
 // Libc++ when built for z/OS doesn't contain the aligned allocation functions,
 // nor does the dynamic library shipped with z/OS.
 // UNSUPPORTED: target={{.+}}-zos{{.*}}
diff --git a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align_nothrow.pass.cpp b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align_nothrow.pass.cpp
--- a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align_nothrow.pass.cpp
+++ b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align_nothrow.pass.cpp
@@ -16,6 +16,9 @@
 // We get availability markup errors when aligned allocation is missing
 // XFAIL: availability-aligned_allocation-missing
 
+// https://reviews.llvm.org/D129198 is not in AppleClang 14
+// XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.13{{(.0)?}} && apple-clang-14
+
 // Libc++ when built for z/OS doesn't contain the aligned allocation functions,
 // nor does the dynamic library shipped with z/OS.
 // UNSUPPORTED: target={{.+}}-zos{{.*}}
diff --git a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align_nothrow.replace.indirect.pass.cpp b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align_nothrow.replace.indirect.pass.cpp
--- a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align_nothrow.replace.indirect.pass.cpp
+++ b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align_nothrow.replace.indirect.pass.cpp
@@ -19,6 +19,9 @@
 // We get availability markup errors when aligned allocation is missing
 // XFAIL: availability-aligned_allocation-missing
 
+// https://reviews.llvm.org/D129198 is not in AppleClang 14
+// XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.13{{(.0)?}} && apple-clang-14
+
 // Libc++ when built for z/OS doesn't contain the aligned allocation functions,
 // nor does the dynamic library shipped with z/OS.
 // UNSUPPORTED: target={{.+}}-zos{{.*}}
diff --git a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align_nothrow.replace.pass.cpp b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align_nothrow.replace.pass.cpp
--- a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align_nothrow.replace.pass.cpp
+++ b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new.size_align_nothrow.replace.pass.cpp
@@ -16,6 +16,9 @@
 // We get availability markup errors when aligned allocation is missing
 // XFAIL: availability-aligned_allocation-missing
 
+// https://reviews.llvm.org/D129198 is not in AppleClang 14
+// XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.13{{(.0)?}} && apple-clang-14
+
 // Libc++ when built for z/OS doesn't contain the aligned allocation functions,
 // nor does the dynamic library shipped with z/OS.
 // UNSUPPORTED: target={{.+}}-zos{{.*}}
diff --git a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/nodiscard.verify.cpp b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/nodiscard.verify.cpp
--- a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/nodiscard.verify.cpp
+++ b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/nodiscard.verify.cpp
@@ -20,6 +20,9 @@
 // We get availability markup errors when aligned allocation is missing
 // XFAIL: availability-aligned_allocation-missing
 
+// https://reviews.llvm.org/D129198 is not in AppleClang 14
+// XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.13{{(.0)?}} && apple-clang-14
+
 // Libc++ when built for z/OS doesn't contain the aligned allocation functions,
 // nor does the dynamic library shipped with z/OS.
 // UNSUPPORTED: target={{.+}}-zos{{.*}}
diff --git a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new.size_align.pass.cpp b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new.size_align.pass.cpp
--- a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new.size_align.pass.cpp
+++ b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new.size_align.pass.cpp
@@ -13,6 +13,9 @@
 // We get availability markup errors when aligned allocation is missing
 // XFAIL: availability-aligned_allocation-missing
 
+// https://reviews.llvm.org/D129198 is not in AppleClang 14
+// XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.13{{(.0)?}} && apple-clang-14
+
 // asan and msan will not call the new handler.
 // UNSUPPORTED: sanitizer-new-delete
 
diff --git a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new.size_align_nothrow.pass.cpp b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new.size_align_nothrow.pass.cpp
--- a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new.size_align_nothrow.pass.cpp
+++ b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new.size_align_nothrow.pass.cpp
@@ -13,6 +13,9 @@
 // We get availability markup errors when aligned allocation is missing
 // XFAIL: availability-aligned_allocation-missing
 
+// https://reviews.llvm.org/D129198 is not in AppleClang 14
+// XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.13{{(.0)?}} && apple-clang-14
+
 // asan and msan will not call the new handler.
 // UNSUPPORTED: sanitizer-new-delete
 
diff --git a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new.size_align_nothrow.replace.indirect.pass.cpp b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new.size_align_nothrow.replace.indirect.pass.cpp
--- a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new.size_align_nothrow.replace.indirect.pass.cpp
+++ b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new.size_align_nothrow.replace.indirect.pass.cpp
@@ -18,6 +18,9 @@
 // We get availability markup errors when aligned allocation is missing
 // XFAIL: availability-aligned_allocation-missing
 
+// https://reviews.llvm.org/D129198 is not in AppleClang 14
+// XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.13{{(.0)?}} && apple-clang-14
+
 // Libc++ when built for z/OS doesn't contain the aligned allocation functions,
 // nor does the dynamic library shipped with z/OS.
 // UNSUPPORTED: target={{.+}}-zos{{.*}}
diff --git a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new.size_align_nothrow.replace.pass.cpp b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new.size_align_nothrow.replace.pass.cpp
--- a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new.size_align_nothrow.replace.pass.cpp
+++ b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new.size_align_nothrow.replace.pass.cpp
@@ -16,6 +16,9 @@
 // We get availability markup errors when aligned allocation is missing
 // XFAIL: availability-aligned_allocation-missing
 
+// https://reviews.llvm.org/D129198 is not in AppleClang 14
+// XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.13{{(.0)?}} && apple-clang-14
+
 // Libc++ when built for z/OS doesn't contain the aligned allocation functions,
 // nor does the dynamic library shipped with z/OS.
 // UNSUPPORTED: target={{.+}}-zos{{.*}}
diff --git a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/nodiscard.verify.cpp b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/nodiscard.verify.cpp
--- a/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/nodiscard.verify.cpp
+++ b/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/nodiscard.verify.cpp
@@ -20,6 +20,9 @@
 // We get availability markup errors when aligned allocation is missing
 // XFAIL: availability-aligned_allocation-missing
 
+// https://reviews.llvm.org/D129198 is not in AppleClang 14
+// XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.13{{(.0)?}} && apple-clang-14
+
 // Libc++ when built for z/OS doesn't contain the aligned allocation functions,
 // nor does the dynamic library shipped with z/OS.
 // UNSUPPORTED: target={{.+}}-zos{{.*}}
diff --git a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.array.bounded.pass.cpp b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.array.bounded.pass.cpp
--- a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.array.bounded.pass.cpp
+++ b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.array.bounded.pass.cpp
@@ -11,6 +11,9 @@
 // This test requires support for aligned allocation to test overaligned types.
 // XFAIL: availability-aligned_allocation-missing
 
+// https://reviews.llvm.org/D129198 is not in AppleClang 14
+// XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.13{{(.0)?}} && apple-clang-14
+
 // <memory>
 
 // shared_ptr
diff --git a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.array.unbounded.pass.cpp b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.array.unbounded.pass.cpp
--- a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.array.unbounded.pass.cpp
+++ b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.array.unbounded.pass.cpp
@@ -11,6 +11,9 @@
 // This test requires support for aligned allocation to test overaligned types.
 // XFAIL: availability-aligned_allocation-missing
 
+// https://reviews.llvm.org/D129198 is not in AppleClang 14
+// XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.13{{(.0)?}} && apple-clang-14
+
 // <memory>
 
 // shared_ptr
diff --git a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.array.bounded.pass.cpp b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.array.bounded.pass.cpp
--- a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.array.bounded.pass.cpp
+++ b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.array.bounded.pass.cpp
@@ -11,6 +11,9 @@
 // This test requires support for aligned allocation to test overaligned types.
 // XFAIL: availability-aligned_allocation-missing
 
+// https://reviews.llvm.org/D129198 is not in AppleClang 14
+// XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.13{{(.0)?}} && apple-clang-14
+
 // <memory>
 
 // shared_ptr
diff --git a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.array.unbounded.pass.cpp b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.array.unbounded.pass.cpp
--- a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.array.unbounded.pass.cpp
+++ b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.array.unbounded.pass.cpp
@@ -11,6 +11,9 @@
 // This test requires support for aligned allocation to test overaligned types.
 // XFAIL: availability-aligned_allocation-missing
 
+// https://reviews.llvm.org/D129198 is not in AppleClang 14
+// XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.13{{(.0)?}} && apple-clang-14
+
 // <memory>
 
 // shared_ptr
diff --git a/libcxx/utils/ci/buildkite-pipeline.yml b/libcxx/utils/ci/buildkite-pipeline.yml
--- a/libcxx/utils/ci/buildkite-pipeline.yml
+++ b/libcxx/utils/ci/buildkite-pipeline.yml
@@ -884,8 +884,8 @@
       timeout_in_minutes: 120
 
     # Test back-deployment to older Apple platforms
-    - label: "Apple back-deployment macosx10.9"
-      command: "libcxx/utils/ci/run-buildbot apple-system-backdeployment-10.9"
+    - label: "Apple back-deployment macosx10.13"
+      command: "libcxx/utils/ci/run-buildbot apple-system-backdeployment-10.13"
       artifact_paths:
         - "**/test-results.xml"
         - "**/*.abilist"