diff --git a/assets/patches.txt b/assets/patches.txt
index 1723a21..76d4dcc 100644
--- a/assets/patches.txt
+++ b/assets/patches.txt
@@ -11,6 +11,7 @@ patches/fullpage-translations-customization.patch
 patches/fullpage-translations.patch
 patches/hide-passwordmgr.patch
 patches/librewolf-prefs.patch
+patches/macos-14.4-sdk.patch
 patches/mozilla_dirs.patch
 patches/msix.patch
 patches/remove_addons.patch
diff --git a/patches/macos-14.4-sdk.patch b/patches/macos-14.4-sdk.patch
index 863ece8..7db3e52 100644
--- a/patches/macos-14.4-sdk.patch
+++ b/patches/macos-14.4-sdk.patch
@@ -11,15 +11,25 @@ Differential Revision: https://phabricator.services.mozilla.com/D205627
 diff --git a/build/moz.configure/toolchain.configure b/build/moz.configure/toolchain.configure
 --- a/build/moz.configure/toolchain.configure
 +++ b/build/moz.configure/toolchain.configure
-@@ -99,7 +99,7 @@ with only_when(host_is_osx | target_is_osx):
-         return Version(obj["Version"])
+@@ -95,17 +95,17 @@ with only_when(host_is_osx | target_is_o
+     option(
+         "--with-macos-sdk",
+         env="MACOS_SDK_DIR",
+         nargs=1,
+         help="Location of platform SDK to use",
+     )
  
-     def sdk_min_version():
+     def mac_sdk_min_version():
 -        return "14.2"
 +        return "14.4"
  
      @depends(
          "--with-macos-sdk",
+         host,
+         bootstrap_path(
+             "MacOSX{}.sdk".format(mac_sdk_min_version()),
+             when=depends("--with-macos-sdk")(lambda x: not x),
+             allow_failure=True,
 diff --git a/python/mozbuild/mozbuild/test/configure/macos_fake_sdk/SDKSettings.plist b/python/mozbuild/mozbuild/test/configure/macos_fake_sdk/SDKSettings.plist
 --- a/python/mozbuild/mozbuild/test/configure/macos_fake_sdk/SDKSettings.plist
 +++ b/python/mozbuild/mozbuild/test/configure/macos_fake_sdk/SDKSettings.plist
@@ -36,7 +46,12 @@ diff --git a/python/mozbuild/mozbuild/test/configure/macos_fake_sdk/SDKSettings.
 diff --git a/taskcluster/ci/toolchain/macos-sdk.yml b/taskcluster/ci/toolchain/macos-sdk.yml
 --- a/taskcluster/ci/toolchain/macos-sdk.yml
 +++ b/taskcluster/ci/toolchain/macos-sdk.yml
-@@ -32,17 +32,17 @@ macosx64-sdk-13.3:
+@@ -27,30 +27,30 @@ macosx64-sdk-13.3:
+         arguments:
+             - https://swcdn.apple.com/content/downloads/15/62/032-84673-A_7A1TG1RF8Z/xpc8q44ggn2pkn82iwr0fi1zeb9cxi8ath/CLTools_macOSNMOS_SDK.pkg
+             - 8de3306508dca31040b3b49ff370e96c94f4546bcf22cb4069abbb18e2d6bce8e20d40a6903f00ae75558175b624a979ea0444f54bc6d9d67e841f2000b0d863
+             - Library/Developer/CommandLineTools/SDKs/MacOSX13.3.sdk
+         toolchain-artifact: project/gecko/mac-sdk/MacOSX13.3.sdk.tar.zst
          toolchain-alias:
              - MacOSX13.3.sdk
  
@@ -62,6 +77,14 @@ diff --git a/taskcluster/ci/toolchain/macos-sdk.yml b/taskcluster/ci/toolchain/m
              - macosx64-sdk-toolchain
 -            - MacOSX14.2.sdk
 +            - MacOSX14.4.sdk
+ 
+ ios-sdk-17.4:
+     description: "iPhoneOS17.4 SDK"
+     treeherder:
+         symbol: TM(ios17.4)
+     # Because it's using an internal tooltool artifact, it can't be used as a local-toolchain for
+     # bootstrap. But we still want to use the same script as local-toolchains.
+     attributes:
 diff --git a/taskcluster/ci/toolchain/misc.yml b/taskcluster/ci/toolchain/misc.yml
 --- a/taskcluster/ci/toolchain/misc.yml
 +++ b/taskcluster/ci/toolchain/misc.yml