diff --git a/CHANGELOG.md b/CHANGELOG.md
index 39b1be9..95ff7e5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,6 @@
-## [v4.8-2020?] not yet released
+## [v4.8-2020b] not yet released
+### Changed
+- Update to TZDB 2020b [#919]
 
 ## [v4.7-2020a] published on 2020-09-13
 ### Added