diff --git a/build/build.xml b/build/build.xml
index e8f95ebba..d2870db8f 100644
--- a/build/build.xml
+++ b/build/build.xml
@@ -204,6 +204,12 @@
       <arg value="macosx/dist/tools-universal.zip" />
     </exec>
 
+    <copy todir="macosx/work/Arduino.app/Contents/Resources/Java/hardware/tools">    
+      <fileset file="macosx/dist/bossac" />
+    </copy>
+
+    <chmod file="macosx/work/Arduino.app/Contents/Resources/Java/hardware/tools/bossac" perm="755" />
+
     <copy todir="macosx/work/Arduino.app/Contents/Resources/Java/hardware/tools/avr/avr/include/avr">    
       <fileset file="macosx/dist/eeprom.h" />
     </copy>
diff --git a/build/macosx/dist/bossac b/build/macosx/dist/bossac
new file mode 100755
index 000000000..32103e5fd
Binary files /dev/null and b/build/macosx/dist/bossac differ