diff --git a/pkgs/development/libraries/haskell/pipes/default.nix b/pkgs/development/libraries/haskell/pipes/default.nix
index a78028416076..d9d923987090 100644
--- a/pkgs/development/libraries/haskell/pipes/default.nix
+++ b/pkgs/development/libraries/haskell/pipes/default.nix
@@ -1,10 +1,15 @@
-{ cabal, mmorph, mtl, transformers, void }:
+{ cabal, mmorph, mtl, QuickCheck, testFramework
+, testFrameworkQuickcheck2, transformers, void
+}:
 
 cabal.mkDerivation (self: {
   pname = "pipes";
-  version = "4.0.0";
-  sha256 = "0zsz739hjmfirwv9sacibpikwz48l006g95m8da1rqk5p1yyr2lm";
+  version = "4.0.1";
+  sha256 = "0q2i58w4nlf23di6rjrv543nmj5d5nkz29q9aciw89zx5x5m22h9";
   buildDepends = [ mmorph mtl transformers void ];
+  testDepends = [
+    mtl QuickCheck testFramework testFrameworkQuickcheck2 transformers
+  ];
   meta = {
     description = "Compositional pipelines";
     license = self.stdenv.lib.licenses.bsd3;