diff --git a/users/uncenter/programs/rust.nix b/users/uncenter/programs/rust.nix
index ba84338..327c4e6 100644
--- a/users/uncenter/programs/rust.nix
+++ b/users/uncenter/programs/rust.nix
@@ -26,5 +26,6 @@ in
     cargo-shear
 
     bacon
+    mdbook
   ];
 }