diff --git a/History.md b/History.md
index 842d781e..9b468cc0 100644
--- a/History.md
+++ b/History.md
@@ -1,5 +1,7 @@
 2.1.0
 =======
+2020-01-19
+- support CII to UBL conversion (thanks to https://github.com/phax/en16931-cii2ubl)
 - make  IExportableTransaction.getZFAllowances() getZFCharges() and getZFLogisticsServiceCharges() and item.getItemAllowances, item.getItemCharges optional, correct getCurrency optionality
   make IZUGFeRDExportableTradeParty name id zip location street mandatory
 - fixed a charge/allowance rounding error #212