diff --git a/spec_tests/hed-specification b/spec_tests/hed-specification
index 33f48d286..9f23a3e8e 160000
--- a/spec_tests/hed-specification
+++ b/spec_tests/hed-specification
@@ -1 +1 @@
-Subproject commit 33f48d286ea3cb69e8e1c77a9b10379d676c6af8
+Subproject commit 9f23a3e8e69a6f8f2e371afa3c0b475abd8b6a8a