diff --git a/nix/configurations/vanadium/home/dev.nix b/nix/configurations/vanadium/home/dev.nix
index a55be211..58caefeb 100644
--- a/nix/configurations/vanadium/home/dev.nix
+++ b/nix/configurations/vanadium/home/dev.nix
@@ -17,6 +17,8 @@
     pkgs.nixpkgs-review
     pkgs.shellcheck
 
+    pkgs.fx # json viewer
+
     pkgs.lua-language-server
     pkgs.stylua # lua
     pkgs.nil # nix