diff --git a/build/BuildMacOSTask.cs b/build/BuildMacOSTask.cs
index bd6c63e..5ca02c8 100644
--- a/build/BuildMacOSTask.cs
+++ b/build/BuildMacOSTask.cs
@@ -19,7 +19,7 @@ public override void Run(BuildContext context)
         var buildWorkingDir = "openal-soft/build_osx";
         context.CreateDirectory(buildWorkingDir);
         context.CreateDirectory($"{context.ArtifactsDir}/osx/");
-        context.StartProcess("cmake", new ProcessSettings { WorkingDirectory = buildWorkingDir, Arguments = "-DCMAKE_OSX_ARCHITECTURES=\"x86_64;arm64\" -DALSOFT_REQUIRE_COREAUDIO=ON -DALSOFT_TESTS=OFF -DALSOFT_UTILS=OFF -DALSOFT_EXAMPLES=OFF -DALSOFT_INSTALL=OFF -DCMAKE_BUILD_TYPE=Release .." });
+        context.StartProcess("cmake", new ProcessSettings { WorkingDirectory = buildWorkingDir, Arguments = "-DCMAKE_OSX_DEPLOYMENT_TARGET=10.15 -DCMAKE_OSX_ARCHITECTURES=\"x86_64;arm64\" -DALSOFT_REQUIRE_COREAUDIO=ON -DALSOFT_TESTS=OFF -DALSOFT_UTILS=OFF -DALSOFT_EXAMPLES=OFF -DALSOFT_INSTALL=OFF -DCMAKE_BUILD_TYPE=Release .." });
         context.StartProcess("cmake", new ProcessSettings { WorkingDirectory = buildWorkingDir, Arguments = "--build . --config Release" });
         var files = Directory.GetFiles(System.IO.Path.Combine(buildWorkingDir), "libopenal.*.*.*.dylib", SearchOption.TopDirectoryOnly);
         context.CopyFile(files[0], $"{context.ArtifactsDir}/osx/libopenal.dylib");