diff --git a/nix/devShells/vim-tw.nix b/nix/devShells/vim-tw.nix
index 5407dddd..f9a5ca97 100644
--- a/nix/devShells/vim-tw.nix
+++ b/nix/devShells/vim-tw.nix
@@ -9,5 +9,6 @@ in
         haskellPackages.cabal-install
         haskellPackages.ghc
         haskellPackages.haskell-language-server
+        haskellPackages.retrie
       ];
     }