diff --git a/src/Nix/Eval.hs b/src/Nix/Eval.hs
index 6c81b7c..b7f44f6 100644
--- a/src/Nix/Eval.hs
+++ b/src/Nix/Eval.hs
@@ -1,7 +1,6 @@
 {-# LANGUAGE AllowAmbiguousTypes #-}
 {-# LANGUAGE ConstraintKinds #-}
 {-# LANGUAGE FlexibleContexts #-}
-{-# LANGUAGE FunctionalDependencies #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE MultiParamTypeClasses #-}