diff --git a/drafts/str4d-stratum/draft1.rst b/drafts/str4d-stratum/draft1.rst
index 2b4cc0c0..180f9b14 100644
--- a/drafts/str4d-stratum/draft1.rst
+++ b/drafts/str4d-stratum/draft1.rst
@@ -489,6 +489,9 @@ Thanks to:
 - Marek Palatinus (slush) and his colleagues for their refinements, suggestions, and
   robust discussion.
 
+- Jelle Bourdeaud'hui (razakal) and ocminer for their help with testing and
+  finding implementation bugs in the specification.
+
 This ZIP was edited by Daira Hopwood.