diff --git a/templates/gleam/flake.nix b/templates/gleam/flake.nix
index 22267ec..9a36a1a 100644
--- a/templates/gleam/flake.nix
+++ b/templates/gleam/flake.nix
@@ -17,6 +17,7 @@
         buildInputs = with pkgs; [
           erlang
           gleam
+          rebar3
         ];
       };
     });