diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index ca4062eb..42f2fac7 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -19,6 +19,7 @@ Ashley Camba
 Yaroslav Halchenko
 Pablo / @oubiga
 Tom Atkins / @knitatoms
+Julio Castillo / @juliocc
 
 * Possesses commit rights