diff --git a/atomics/used_guids.txt b/atomics/used_guids.txt
index 769dbc27..00787c37 100644
--- a/atomics/used_guids.txt
+++ b/atomics/used_guids.txt
@@ -867,3 +867,4 @@ d0c81167-803d-4dca-99b4-7ce65e7b257c
 a2b35a63-9df1-4806-9a4d-5fe0500845f2
 962a6017-1c09-45a6-880b-adc9c57cb22e
 9fd5a74b-ba89-482a-8a3e-a5feaa3697b0
+21c7bf80-3e8b-40fa-8f9d-f5b194ff2865