diff --git a/spec_tests/hed-specification b/spec_tests/hed-specification
index 595701bf..9a3ed491 160000
--- a/spec_tests/hed-specification
+++ b/spec_tests/hed-specification
@@ -1 +1 @@
-Subproject commit 595701bfc093087f83bd7090d0fc3afdb34bd0df
+Subproject commit 9a3ed491c1bdf1421737d5b2c9f6791111c955e3