diff --git a/public/app-developpement-haskell.nix b/public/app-developpement-haskell.nix
index 08a98e4..ad97fb2 100644
--- a/public/app-developpement-haskell.nix
+++ b/public/app-developpement-haskell.nix
@@ -19,6 +19,7 @@ mkIf cfg.developpement-haskell {
 
     haskellPackages.stylish-haskell # qualité de code
     haskellPackages.hindent
+    haskellPackages.hlint
 
     # Application perso
     haskellPackages.hahp