diff --git a/doc/contributors.rdoc b/doc/contributors.rdoc
index 08750f4f35..eaec30d7d0 100644
--- a/doc/contributors.rdoc
+++ b/doc/contributors.rdoc
@@ -603,6 +603,12 @@ Robin Stocker
 Joshua Stowers
 * a patch for array.c
 
+Marcus Stollsteimer (stomar)
+* committer
+* a maintainer of www.ruby-lang.org
+* patches for cgi (HTML5 tag maker), bigdecimal, and others
+* documentation
+
 Adam Strzelecki
 * a patch for compile.c