diff --git a/doc/tag-index b/doc/tag-index
index 682652ea0..f96f57d8b 100644
--- a/doc/tag-index
+++ b/doc/tag-index
@@ -1,6 +1,7 @@
     Notes on tags used in MITgcmUV
     ==============================
 
+checkpoint68z (2024/07/27)
 o pkg/diagnostics:
   - to allow to use ADJ-diags in DIVA runs, change call sequence regarding
     TURNOFF_MODEL_IO and DIAGSTATS_INI_IO and simplify (fewer tests for