diff --git a/Makefile.am b/Makefile.am
index 235b66e..2688e74 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -127,5 +127,13 @@
 	sh $(srcdir)/release/makedpkg ${PACKAGE_NAME} ${VERSION} ${BUILD} \
 		${DEBARCH} ${srcdir}
 
+if X86_64
+
+udmg: all
+	sh $(srcdir)/release/makemacpkg ${PACKAGE_NAME} ${VERSION} ${BUILD} \
+		${srcdir} universal
+
+endif
+
 dmg: all
 	sh $(srcdir)/release/makemacpkg ${PACKAGE_NAME} ${VERSION} ${BUILD} ${srcdir}