diff --git a/flake.nix b/flake.nix
index e5c9556..6a24fbd 100644
--- a/flake.nix
+++ b/flake.nix
@@ -19,7 +19,7 @@
         version = "1.0.0";
 
         nativeBuildInputs = builtins.attrValues {
-          inherit (pkgs) mdbook mdbook-katex;
+          inherit (pkgs) mdbook mdbook-katex mdbook-toc;
         };
 
         src = self;