diff --git a/HISTORY.txt b/HISTORY.txt
index 3fedd7e8..169a32fb 100644
--- a/HISTORY.txt
+++ b/HISTORY.txt
@@ -1,3 +1,7 @@
+10.0.0:
+ - Deprecate 'update' command.
+ - Introduce 'sync' command.
+ - Better `lock -r` functionality.
 9.1.0:
  - Add --system flag to $ pipenv check.
  - Removal of package name suggestions.