diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index 0f56ce4d..45836e7f 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -17,5 +17,5 @@
   OpenCV functions and better OSX library loader
 
 - Ralf Gommers
-  Image IO and plots in documentation
+  Image IO, color spaces and plots in documentation