diff --git a/README.md b/README.md
index 767df10..585b04e 100755
--- a/README.md
+++ b/README.md
@@ -32,6 +32,7 @@ Run and Eventarc.
     adds a local cache of ClamAV definition files which is updated on a schedule.
 * 2023-06-20 v2.1.0 Resolve #46 where docker build failed, and #50 where pip3
     installs failed
+* 2023-11-22 v2.2.0 Add support for using environmental variables in the config.json file.
 
 ## Upgrading from v1.x to v2.x