diff --git a/contributors.txt b/contributors.txt
index 312a2278e..e9011297e 100644
--- a/contributors.txt
+++ b/contributors.txt
@@ -63,3 +63,4 @@ YYYY/MM/DD, github id, Full name, email
 2014/10/18, sergiusignacius, Sérgio Silva, serge.a.silva@gmail.com
 2014/10/26, bdkearns, Brian Kearns, bdkearns@gmail.com
 2014/10/27, michaelpj, Michael Peyton Jones, michaelpj@gmail.com
+2015/01/29, TomLottermann, Thomas Lottermann, tomlottermann@gmail.com