diff --git a/profiles/haskell-dev.nix b/profiles/haskell-dev.nix
index 50994c9..62cdae2 100644
--- a/profiles/haskell-dev.nix
+++ b/profiles/haskell-dev.nix
@@ -7,6 +7,8 @@
   environment.systemPackages = with pkgs.haskellPackages; [
     cabal-install # Haskell software automation
     ghc # Glasgow Haskell Compiler
+    haskell-language-server # LSP server for GHC
     hlint # Haskell source linter
+    stylish-haskell # simple Haskell code prettifier
   ];
 }