diff --git a/ext/build_monocypher_native.ps1 b/ext/build_monocypher_native.ps1
index b6f6235..4eb81e2 100755
--- a/ext/build_monocypher_native.ps1
+++ b/ext/build_monocypher_native.ps1
@@ -37,6 +37,12 @@ function Build-Project {
     if ($IsMacOS) {
         $NETPlatform = "osx"
         $NETSharedLibExtension = "dylib"
+        if ($NETArch -eq "arm64") {
+            $CMakeArch = "-DCMAKE_OSX_DEPLOYMENT_TARGET=10.10", "-DCMAKE_OSX_ARCHITECTURES=arm64"
+        }
+        elseif ($NETArch -eq "x64") {
+            $CMakeArch = "-DCMAKE_OSX_DEPLOYMENT_TARGET=10.10", "-DCMAKE_OSX_ARCHITECTURES=x86_64"
+        }
     }
     elseif ($IsWindows) {
         $MsvcArch = $NETArch