diff --git a/README.md b/README.md
index fdac56d..1709470 100644
--- a/README.md
+++ b/README.md
@@ -42,6 +42,7 @@ nixpkgs channel describes.
 | nixos-unstable | latest      | latest and greatest, major versions might change   |
 | nixos-20.09    | nixos-20.09 | only minor versions that include security updates |
 | nixos-20.03    | nixos-20.03 | only minor versions that include security updates |
+| nixos-21.05    | nixos-21.04 | only minor versions that include security updates |
 
 ## List of images