diff --git a/home-manager/default.nix b/home-manager/default.nix
index 66ebd91..13c11f9 100644
--- a/home-manager/default.nix
+++ b/home-manager/default.nix
@@ -13,6 +13,7 @@ in {
       unstable.fish
       unstable.gemini-cli
       nixd
+      thunderbird
       tree-sitter
       (brewCasks.unity-hub.overrideAttrs (oldAttrs: {
         src = pkgs.fetchurl {