Update README.md

Author: lmmendes

README.md

@@ -4,7 +4,7 @@
 The Passworks API is based on a [REST](http://en.wikipedia.org/wiki/Representational_state_transfer) architecture which makes Passworks API predictable and resource oriented. It uses HTTP built-in features, like HTTP authentication, HTTP verbs (GET, POST, PUT, PATCH, DELETE) and HTTP response codes to allow easy access from any programming language via off-the-shelf libraries and tools.
 
 
-Last updated at `June 8th, 2019` see the [CHANGELOG.md](https://github.com/passworks/passworks-api/blob/master/CHANGELOG.md) for more details.
+Last updated at `April 6th, 2021` see the [CHANGELOG.md](https://github.com/passworks/passworks-api/blob/master/CHANGELOG.md) for more details.
 
 ## SDKs