diff --git a/pkgs/development/libraries/haskell/network-transport-tcp/default.nix b/pkgs/development/libraries/haskell/network-transport-tcp/default.nix
index f4cab5090166..728a40d8d3e6 100644
--- a/pkgs/development/libraries/haskell/network-transport-tcp/default.nix
+++ b/pkgs/development/libraries/haskell/network-transport-tcp/default.nix
@@ -9,7 +9,9 @@ cabal.mkDerivation (self: {
   buildDepends = [ dataAccessor network networkTransport ];
   testDepends = [ network networkTransport networkTransportTests ];
   doCheck = false;
-  jailbreak = true;
+  patchPhase = ''
+    sed -i -e 's|network >=.*,|network,|' -e 's|network >=.*|network|' network-transport-tcp.cabal
+  '';
   meta = {
     homepage = "http://haskell-distributed.github.com";
     description = "TCP instantiation of Network.Transport";