diff --git a/shell.nix b/shell.nix
index 62eef37..96c698f 100644
--- a/shell.nix
+++ b/shell.nix
@@ -8,6 +8,7 @@ in
 mkShell {
   name = "shell-buuka";
   buildInputs = [
+    hlint
     ghcid
     stylish-haskell
     cabal2nix