diff --git a/pkgs/development/libraries/haskell/warp/default.nix b/pkgs/development/libraries/haskell/warp/default.nix
index e066196cd4d..30bbbef9a0b 100644
--- a/pkgs/development/libraries/haskell/warp/default.nix
+++ b/pkgs/development/libraries/haskell/warp/default.nix
@@ -1,16 +1,16 @@
 { cabal, blazeBuilder, blazeBuilderConduit, caseInsensitive
 , conduit, httpTypes, liftedBase, network, networkConduit
-, simpleSendfile, transformers, unixCompat, wai
+, simpleSendfile, transformers, unixCompat, void, wai
 }:
 
 cabal.mkDerivation (self: {
   pname = "warp";
-  version = "1.3.0.1";
-  sha256 = "0bgmz2kd2z9agpid0w2whfz1cyrmiaiyap20za1l56d88m0p1z45";
+  version = "1.3.1";
+  sha256 = "12f4v080v8jgm02swqbbgq9yvbajmbr8ja2p6ljc7bhf3rkpwplr";
   buildDepends = [
     blazeBuilder blazeBuilderConduit caseInsensitive conduit httpTypes
     liftedBase network networkConduit simpleSendfile transformers
-    unixCompat wai
+    unixCompat void wai
   ];
   meta = {
     homepage = "http://github.com/yesodweb/wai";