diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fff1e3534..629059c6e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,8 +23,8 @@ env:
   WINE_URL: https://github.com/3Shain/wine/releases/download/v8.16-3shain/wine.tar.gz
   WINE_ARM64EC_VERSION: wine-11.2
   WINE_ARM64EC_URL: https://github.com/3Shain/wine/releases/download/wine-11.2/wine-11.2.tar.gz
-  LLVM_MINGW_VERSION: "20251216"
-  LLVM_MINGW_DIR: llvm-mingw-20251216-ucrt-macos-universal
+  LLVM_MINGW_VERSION: "20260812"
+  LLVM_MINGW_DIR: llvm-mingw-20260812-ucrt-macos-universal
 
 jobs:
   setup-wine:
diff --git a/meson.build b/meson.build
index e10c90191..34c573997 100644
--- a/meson.build
+++ b/meson.build
@@ -60,6 +60,12 @@ if cpu_family == 'x86'
   ]
 endif
 
+if cpu_family == 'aarch64' and dxmt_crossbuild
+  compiler_args += [
+    '-marm64x',
+  ]
+endif
+
 native_compiler_args = [
   '-Wimplicit-fallthrough',
   '-Wno-unused-parameter',