diff --git a/pkgs/development/libraries/haskell/simple-conduit/default.nix b/pkgs/development/libraries/haskell/simple-conduit/default.nix
index 8f5574e4701..ef1a5c40278 100644
--- a/pkgs/development/libraries/haskell/simple-conduit/default.nix
+++ b/pkgs/development/libraries/haskell/simple-conduit/default.nix
@@ -1,23 +1,22 @@
 { cabal, bifunctors, chunkedData, either, exceptions, filepath
-, foldl, liftedAsync, liftedBase, mmorph, monadControl
+, free, liftedAsync, liftedBase, mmorph, monadControl
 , monoTraversable, mtl, mwcRandom, primitive, semigroups, stm
 , streamingCommons, text, transformers, transformersBase, vector
-, void
 }:
 
 cabal.mkDerivation (self: {
   pname = "simple-conduit";
-  version = "0.4.0";
-  sha256 = "0r9l0ms396gxkxgj1q33s0v8lim7rj77mhmf5k7wgf9mzydv1y6c";
+  version = "0.5.0";
+  sha256 = "0fbm1nv9190p1b038p6zxmw042cgm5jgkfbhscw1fslgzja90iyz";
   buildDepends = [
-    bifunctors chunkedData either exceptions filepath foldl liftedAsync
+    bifunctors chunkedData either exceptions filepath free liftedAsync
     liftedBase mmorph monadControl monoTraversable mtl mwcRandom
     primitive semigroups stm streamingCommons text transformers
-    transformersBase vector void
+    transformersBase vector
   ];
   meta = {
     homepage = "http://github.com/jwiegley/simple-conduit";
-    description = "A simple streaming library based on composing monadic folds";
+    description = "A simple streaming I/O library based on monadic folds";
     license = self.stdenv.lib.licenses.bsd3;
     platforms = self.ghc.meta.platforms;
   };