diff --git a/glfw/build.zig b/glfw/build.zig
index 5cc48721..de55d1b8 100644
--- a/glfw/build.zig
+++ b/glfw/build.zig
@@ -244,4 +244,3 @@ fn linkGLFWDependencies(b: *Builder, step: *std.build.LibExeObjStep, options: Op
         },
     }
 }
-
diff --git a/glfw/src/Window.zig b/glfw/src/Window.zig
index 66f4dd72..22a7205b 100644
--- a/glfw/src/Window.zig
+++ b/glfw/src/Window.zig
@@ -751,15 +751,15 @@ pub inline fn setSizeLimits(self: Window, min: Size, max: Size) Error!void {
 /// see also: window_sizelimits, glfw.Window.setSizeLimits
 pub inline fn setAspectRatio(self: Window, numerator: usize, denominator: usize) Error!void {
     internal_debug.assertInitialized();
-    
+
     std.debug.assert(numerator != 0);
     std.debug.assert(denominator != 0);
-    
+
     if (numerator != glfw.dont_care and denominator != glfw.dont_care) {
         std.debug.assert(numerator > 0);
         std.debug.assert(denominator > 0);
     }
-    
+
     c.glfwSetWindowAspectRatio(self.handle, @intCast(c_int, numerator), @intCast(c_int, denominator));
     getError() catch |err| return switch (err) {
         Error.PlatformError => err,
diff --git a/glfw/src/opengl.zig b/glfw/src/opengl.zig
index 37fd314f..9370e363 100644
--- a/glfw/src/opengl.zig
+++ b/glfw/src/opengl.zig
@@ -133,10 +133,10 @@ pub inline fn swapInterval(interval: isize) Error!void {
 /// see also: context_glext, glfw.getProcAddress
 pub inline fn extensionSupported(extension: [:0]const u8) Error!bool {
     internal_debug.assertInitialized();
-    
+
     std.debug.assert(extension.len != 0);
     std.debug.assert(extension[0] != 0);
-    
+
     const supported = c.glfwExtensionSupported(extension);
     getError() catch |err| return switch (err) {
         Error.NoCurrentContext => err,
diff --git a/glfw/system_sdk.zig b/glfw/system_sdk.zig
index 410c15ac..782ec8a5 100644
--- a/glfw/system_sdk.zig
+++ b/glfw/system_sdk.zig
@@ -5,9 +5,11 @@
 //!
 //! The SDKs used by this script by default are:
 //!
+//! * Windows: none
 //! * Linux: https://github.com/hexops/sdk-linux-x86_64 (~40MB, X11, Wayland, etc. development libraries)
-//! * MacOS: https://github.com/hexops/sdk-macos-12.0 (~112MB, most frameworks you'd find in the XCode SDK)
-//! * Windows: not needed
+//! * MacOS (most frameworks you'd find in the XCode SDK):
+//!     * https://github.com/hexops/sdk-macos-11.3 (~160MB, default)
+//!     * https://github.com/hexops/sdk-macos-12.0 (~112MB, only if you specify a macOS 12 target triple.)
 //!
 //! You may supply your own SDKs via the Options struct if needed, although the Mach versions above
 //! will generally work for most OpenGL/Vulkan applications.
@@ -34,8 +36,11 @@ pub const Options = struct {
     /// The github org to find repositories in.
     github_org: []const u8 = "hexops",
 
-    /// The MacOS SDK repository name.
-    macos_sdk: []const u8 = "sdk-macos-12.0",
+    /// The MacOS 12 SDK repository name.
+    macos_sdk_12: []const u8 = "sdk-macos-12.0",
+
+    /// The MacOS 11 SDK repository name.
+    macos_sdk_11: []const u8 = "sdk-macos-11.3",
 
     /// The Linux x86-64 SDK repository name.
     linux_x86_64_sdk: []const u8 = "sdk-linux-x86_64",
@@ -57,7 +62,10 @@ pub fn include(b: *Builder, step: *std.build.LibExeObjStep, options: Options) vo
 }
 
 fn includeSdkMacOS(b: *Builder, step: *std.build.LibExeObjStep, options: Options) void {
-    const sdk_root_dir = getSdkRoot(b.allocator, options.github_org, options.macos_sdk) catch unreachable;
+    const target = (std.zig.system.NativeTargetInfo.detect(b.allocator, step.target) catch unreachable).target;
+    const mac_12 = target.os.version_range.semver.isAtLeast(.{ .major = 12, .minor = 0 }) orelse false;
+    const sdk_name = if (mac_12) options.macos_sdk_12 else options.macos_sdk_11;
+    const sdk_root_dir = getSdkRoot(b.allocator, options.github_org, sdk_name) catch unreachable;
 
     if (options.set_sysroot) {
         step.addFrameworkDir("/System/Library/Frameworks");