diff --git a/treefmt.nix b/treefmt.nix
index 1b27317..c81a23d 100644
--- a/treefmt.nix
+++ b/treefmt.nix
@@ -7,6 +7,7 @@
       package = pkgs.nixfmt-rfc-style;
     };
     statix.enable = true;
+    shellcheck.enable = true;
     deadnix.enable = true;
   };
 }