diff --git a/pkgs/development/libraries/haskell/robots-txt/default.nix b/pkgs/development/libraries/haskell/robots-txt/default.nix
index a325c9e86647..f15391ec5e15 100644
--- a/pkgs/development/libraries/haskell/robots-txt/default.nix
+++ b/pkgs/development/libraries/haskell/robots-txt/default.nix
@@ -1,10 +1,11 @@
-{ cabal, attoparsec, heredoc, hspec, QuickCheck, transformers }:
+{ cabal, attoparsec, heredoc, hspec, QuickCheck, time, transformers
+}:
 
 cabal.mkDerivation (self: {
   pname = "robots-txt";
-  version = "0.4.0.0";
-  sha256 = "1z0bn4v6fx0nx1hr4bbxi5k2c8bv6x3d4pywpav67m5pswxb2yp7";
-  buildDepends = [ attoparsec ];
+  version = "0.4.1.0";
+  sha256 = "1q18pgilrwppmd8d7pby3p6qgk47alzmd8izqspk7n4h4agrscn4";
+  buildDepends = [ attoparsec time ];
   testDepends = [ attoparsec heredoc hspec QuickCheck transformers ];
   meta = {
     homepage = "http://github.com/meanpath/robots";