diff --git a/ruby-mdl b/ruby-mdl
index 764951d..5a12513 160000
--- a/ruby-mdl
+++ b/ruby-mdl
@@ -1 +1 @@
-Subproject commit 764951d804b9c4e19c0ff3e31ce99c9b363f643b
+Subproject commit 5a12513a8ecb3703ec1c17bf9293f551bad38e86