diff --git a/specification b/specification
index 66da418e..1c539c01 160000
--- a/specification
+++ b/specification
@@ -1 +1 @@
-Subproject commit 66da418e5a9604291a9668b0fb2df30b47a42916
+Subproject commit 1c539c01ecee4a48785ac803e2af01ecc1273494