diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index cc8ddd1d..143b2b78 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -197,3 +197,6 @@
 
 - Ivana Kajic
   Updated description and examples in documentation for gabor filters
+
+- Matěj Týč
+  Extended the image labelling implementation so it also works on 3D images.