diff --git a/README.md b/README.md
index 34abbab4962..6ee9d9b497c 100644
--- a/README.md
+++ b/README.md
@@ -42,7 +42,7 @@ The most common ones are the following:
 
 ```
 RESTY_IMAGE_BASE=ubuntu|centos|rhel|debian|alpine|amazonlinux
-RESTY_IMAGE_TAG=xenial|bionic|6|7|8|jessie|stretch|latest|latest
+RESTY_IMAGE_TAG=xenial|bionic|focal|6|7|8|jessie|stretch|buster|latest|latest
 PACKAGE_TYPE=deb|rpm|apk
 ```