diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index 66f2626d..b8ecee0e 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -206,7 +206,10 @@
 
 - Kevin Keraudren
   Fix and test for feature.peak_local_max
-    
-Jeremy Metz
-  - Adaptation of ImageJ Autothresholder.Li, fixed Qhull error QH6228   
+
+- Jeremy Metz
+  Adaptation of ImageJ Autothresholder.Li, fixed Qhull error QH6228
+
+- Mike Sarahan
+  Sub-pixel registration