diff --git a/docs/installation.md b/docs/installation.md
index 22db7bdb..8820a3a4 100644
--- a/docs/installation.md
+++ b/docs/installation.md
@@ -57,6 +57,7 @@ conda install -c bkryza/label/clang-uml clang-uml
 #### Nix
 
 You can use the version packaged in nixpkgs like this:
+Currently clang-uml version 0.5.1 is available in nixos-unstable and nixos-24.05
 ```bash
 nix-shell -p clang-uml
 ```