diff --git a/manifests/l/LLVM/LLVM/12.0.0/LLVM.LLVM.installer.yaml b/manifests/l/LLVM/LLVM/12.0.0/LLVM.LLVM.installer.yaml
index 80685d0e6..c52ec95d7 100644
--- a/manifests/l/LLVM/LLVM/12.0.0/LLVM.LLVM.installer.yaml
+++ b/manifests/l/LLVM/LLVM/12.0.0/LLVM.LLVM.installer.yaml
@@ -8,7 +8,11 @@ InstallerType: nullsoft
 Scope: machine
 InstallerSwitches:
   InstallLocation: /D=<INSTALLPATH>
+UpgradeBehavior: install
 Installers:
+  - Architecture: arm64
+    InstallerUrl: https://github.com/llvm/llvm-project/releases/download/llvmorg-12.0.0/LLVM-12.0.0-woa64.exe
+    InstallerSha256: 2A0A05D3C9E07642A1BC017105120C833B6360F4DB1EDB77563C81199F267C3A
   - Architecture: x86
     InstallerUrl: https://github.com/llvm/llvm-project/releases/download/llvmorg-12.0.0/LLVM-12.0.0-win32.exe
     InstallerSha256: BBB264BC9C8300C8F98A129050D94127CBA8370EE26E4F9B1FE9CCED03B1F638