diff --git a/ChangeLog.md b/ChangeLog.md
index de737d5..aab6548 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,10 @@
 # ChangeLog
 
+### 2022-03-08
+
+- Add [HashMap](https://practice.rs/collections/hashmap.html)
+
+
 ### 2022-03-07
 
 - Add [Strings](https://practice.rs/collections/string.html)
diff --git a/Readme.md b/Readme.md
index d9f2a9a..0bc7803 100644
--- a/Readme.md
+++ b/Readme.md
@@ -2,7 +2,7 @@
 
 This book was designed for easily diving into and get skilled with Rust, and it's very easy to use: All you need to do is to make each exercise compile without ERRORS and Panics !
 
-> 🎊 Updated on 2022-03-07: Add [Vectors](https://practice.rs/collections/vector.html)
+> 🎊 Updated on 2022-03-08: Add [HashMap](https://practice.rs/collections/hashmap.html)
 
 ## Read online