diff --git a/LICENSE b/LICENSE
index d959501..8f1caaf 100644
--- a/LICENSE
+++ b/LICENSE
@@ -12,6 +12,7 @@ MIT/X Consortium License
 © 2012 Christoph Lohmann <20h@r-36.net> 
 © 2012 David Galos <galosd83@students.rowan.edu> 
 © 2012 Robert Ransom <rransom.8774@gmail.com>
+© 2013 Jakob Kramer <jakob.kramer@gmx.de>
 
 Permission is hereby granted, free of charge, to any person obtaining a
 copy of this software and associated documentation files (the "Software"),
diff --git a/Makefile b/Makefile
index 9aeb5c4..7f91bac 100644
--- a/Makefile
+++ b/Makefile
@@ -61,6 +61,7 @@ SRC = \
 	sleep.c    \
 	sort.c     \
 	split.c    \
+	sponge.c   \
 	sync.c     \
 	tail.c     \
 	tee.c      \