diff --git a/spec b/spec
index 0cd553d8..18cde170 160000
--- a/spec
+++ b/spec
@@ -1 +1 @@
-Subproject commit 0cd553d85f03b0b7ab983a988ce1720a3190bc88
+Subproject commit 18cde1708e08d4f380ba30b4b1649e06683edfd2