diff --git a/spec_tests/hed-specification b/spec_tests/hed-specification
index c47fff94..c1aad366 160000
--- a/spec_tests/hed-specification
+++ b/spec_tests/hed-specification
@@ -1 +1 @@
-Subproject commit c47fff949db70c9105c875bbdfdf0d11389ffd68
+Subproject commit c1aad366fee6c7f1e68fbd73d2ce6dc369444ad8