diff --git a/book/source/15-migration.md b/book/source/15-migration.md
index 981e496..83f1d6c 100644
--- a/book/source/15-migration.md
+++ b/book/source/15-migration.md
@@ -1 +1,5 @@
 # Migration from v4 to v6
+
+```
+Also see: https://wiki.gnupg.org/OpenPGPEmailSummit202305Notes
+```