diff --git a/History.txt b/History.txt
index 52584d5..0146d08 100644
--- a/History.txt
+++ b/History.txt
@@ -17,3 +17,5 @@ db121046a2fc03ca15286088a761e582  pkg/base_convert-3.0.191214.gem
 67a2f48b232aee186f75acde67904d41  pkg/base_convert-3.0.191224.gem
 # 3.1.191231 / 2019-12-31 15:05:30 -0800
 d05855d9b8c60bc3b8c2fe78d538a90f  pkg/base_convert-3.1.191231.gem
+# 4.0.200111 / 2020-01-11 13:46:20 -0800
+6195715f931b5153daabde7e2be99a7a  pkg/base_convert-4.0.200111.gem