diff --git a/pkgs/development/libraries/haskell/dns/default.nix b/pkgs/development/libraries/haskell/dns/default.nix
index 5434db27087..5b2d99fb90e 100644
--- a/pkgs/development/libraries/haskell/dns/default.nix
+++ b/pkgs/development/libraries/haskell/dns/default.nix
@@ -5,8 +5,8 @@
 
 cabal.mkDerivation (self: {
   pname = "dns";
-  version = "1.1.1";
-  sha256 = "1vyi0rqddaqpnh87gjracp0j3f7ai18qzr6zl6rjkszw3zfngww9";
+  version = "1.2.0";
+  sha256 = "1pzwvb1qycjw6qw34xhd4ap9jl0cc79d3i09b23bg0vqcz80vmpr";
   buildDepends = [
     attoparsec attoparsecConduit binary blazeBuilder conduit iproute
     mtl network networkConduit random