diff --git a/aws-cdk/flake.nix b/aws-cdk/flake.nix
index 0696e0c..175053b 100644
--- a/aws-cdk/flake.nix
+++ b/aws-cdk/flake.nix
@@ -13,6 +13,7 @@
        {
          devShells.default = systempkgs.mkShell {
             buildInputs = with systempkgs; [
+              # specific nodejs versions available, e.g. nodejs_18
               nodejs
               nodePackages.aws-cdk
             ];