diff --git a/pkgs/development/libraries/haskell/io-streams/default.nix b/pkgs/development/libraries/haskell/io-streams/default.nix
index fcc39dfad573..4e3617246813 100644
--- a/pkgs/development/libraries/haskell/io-streams/default.nix
+++ b/pkgs/development/libraries/haskell/io-streams/default.nix
@@ -6,8 +6,8 @@
 
 cabal.mkDerivation (self: {
   pname = "io-streams";
-  version = "1.1.4.2";
-  sha256 = "0x6d0j41wnxl2h9xzbybmzqrrna3hc17786k65cpiby2x3nlp799";
+  version = "1.1.4.3";
+  sha256 = "0qp63xfbfz5ymfn8l9fiy27z30fi4sq201zgsh9x2mkhp6z2yzld";
   buildDepends = [
     attoparsec blazeBuilder network primitive text time transformers
     vector zlibBindings