diff --git a/home-manager/default.nix b/home-manager/default.nix
index ce7c0ec..2ad49ca 100644
--- a/home-manager/default.nix
+++ b/home-manager/default.nix
@@ -13,6 +13,7 @@ in {
       unstable.fish
       unstable.gemini-cli
       nixd
+      tree-sitter
       (brewCasks.unity-hub.overrideAttrs (oldAttrs: {
         src = pkgs.fetchurl {
           url = builtins.head oldAttrs.src.urls;