diff --git a/bin/fsevent_watch b/bin/fsevent_watch
index 889204f..4fb821d 100755
Binary files a/bin/fsevent_watch and b/bin/fsevent_watch differ
diff --git a/ext/fsevent_watch/defines.h b/ext/fsevent_watch/defines.h
index 6f6e87b..34879c5 100644
--- a/ext/fsevent_watch/defines.h
+++ b/ext/fsevent_watch/defines.h
@@ -22,6 +22,8 @@
 #define TARGET_CPU "i386"
 #elif defined(__x86_64__)
 #define TARGET_CPU "x86_64"
+#elif defined(__arm64__)
+#define TARGET_CPU "arm64"
 #else
 #define TARGET_CPU "unknown"
 #endif
diff --git a/ext/rakefile.rb b/ext/rakefile.rb
index d7789bd..e50e888 100644
--- a/ext/rakefile.rb
+++ b/ext/rakefile.rb
@@ -99,6 +99,11 @@
   $ARCHFLAGS = '-arch i386'
 end
 
+desc 'set build arch to arm64'
+task :arm64 do
+  $ARCHFLAGS = '-arch arm64'
+end
+
 task :setup_env => [:set_build_type, :sw_vers, :get_sdk_info]
 
 directory $obj_dir.to_s