diff --git a/spec_tests/hed-schemas b/spec_tests/hed-schemas
index 73ecb358..90640e0a 160000
--- a/spec_tests/hed-schemas
+++ b/spec_tests/hed-schemas
@@ -1 +1 @@
-Subproject commit 73ecb358f61d7a470e1da5a73a10661db588071a
+Subproject commit 90640e0a4def6a866c4bf5b6fa18474613bf1b7c