diff --git a/README.md b/README.md
index 9ea2640..505efe6 100644
--- a/README.md
+++ b/README.md
@@ -7,3 +7,5 @@ This library provides a high-level Text-To-Speech (TTS) interface supporting var
 * Windows
   * Screen readers/SAPI via Tolk
   * WinRT
+* MacOS
+  * `NSSpeechSynthesizer`
diff --git a/src/lib.rs b/src/lib.rs
index cd0dcac..c8c5096 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -3,6 +3,8 @@
  * Currently supported backends are:
  * * [Speech Dispatcher](https://freebsoft.org/speechd) (Linux)
  * * Windows screen readers and SAPI via [Tolk](https://github.com/dkager/tolk/)
+ * * Windows WinRT
+ * * MacOS `NSSpeechSynthesizer`
  * * WebAssembly
 */