diff --git a/user.nix b/user.nix
index c311f51..b4159f8 100644
--- a/user.nix
+++ b/user.nix
@@ -138,6 +138,8 @@ in {
       postman
       tokei
       vscode
+      mdbook
+
       ## nix
       any-nix-shell
       nixfmt