diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index cf2242b9..b6327b93 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -8,5 +8,11 @@
   Morphological operators
 
 - Mahipal Raythattha
-  Documentation
+  Documentation infrastructure
+
+- Chris Colbert
+  OpenCV wrappers
+
+- Ralf Gommers
+  Image IO and plots in documentation