CHANGELOG.md in google-cloud-datastore-2.1.0 vs CHANGELOG.md in google-cloud-datastore-2.2.0

@@ -1,6 +1,12 @@
 # Release History
 
+### 2.2.0 / 2021-03-10
+
+#### Features
+
+* Drop support for Ruby 2.4 and add support for Ruby 3.0
+
 ### 2.1.0 / 2020-09-17
 
 #### Features
 
 * quota_project can be set via library configuration ([#7630](https://www.github.com/googleapis/google-cloud-ruby/issues/7630))