diff --git a/modules/programs/cli/jj/module.nix b/modules/programs/cli/jj/module.nix
index 6336ae6..9aca621 100644
--- a/modules/programs/cli/jj/module.nix
+++ b/modules/programs/cli/jj/module.nix
@@ -18,7 +18,7 @@
       default-command = "log";
       movement.edit = true;
 
-      diff.tool = ["${getExe pkgs.difft}" "--color" "always" "$left" "$right"];
+      diff.tool = ["${getExe pkgs.difftastic}" "--color" "always" "$left" "$right"];
     };
     # FIXME: do this with agenix
     # "--scope" = [