diff --git a/build/BuildMacOSTask.cs b/build/BuildMacOSTask.cs
index 51b9a47..de126e3 100644
--- a/build/BuildMacOSTask.cs
+++ b/build/BuildMacOSTask.cs
@@ -13,7 +13,7 @@ public override void Run(BuildContext context)
     {
         var buildWorkingDir = "mojoshaderbuild/";
         context.CreateDirectory(buildWorkingDir);
-        context.StartProcess("cmake", new ProcessSettings { WorkingDirectory = buildWorkingDir, Arguments = "../mojoshader/CMakeLists.txt -DCMAKE_OSX_ARCHITECTURES=\"x86_64;arm64\"" });
+        context.StartProcess("cmake", new ProcessSettings { WorkingDirectory = buildWorkingDir, Arguments = "../mojoshader/CMakeLists.txt -DCMAKE_OSX_DEPLOYMENT_TARGET=10.15  -DCMAKE_OSX_ARCHITECTURES=\"x86_64;arm64\"" });
         context.StartProcess("cmake", new ProcessSettings { WorkingDirectory = buildWorkingDir, Arguments = "--build . --config release" });
         context.CopyFile(System.IO.Path.Combine(buildWorkingDir, "libmojoshader.dylib"), $"{context.ArtifactsDir}/libmojoshader.dylib");
     }