diff --git a/pkgs/development/libraries/haskell/graphviz/default.nix b/pkgs/development/libraries/haskell/graphviz/default.nix
index 7986ef07c1e..e48f92e5b81 100644
--- a/pkgs/development/libraries/haskell/graphviz/default.nix
+++ b/pkgs/development/libraries/haskell/graphviz/default.nix
@@ -9,6 +9,7 @@ cabal.mkDerivation (self: {
   buildDepends = [
     colour dlist fgl filepath polyparse text transformers wlPprintText
   ];
+  patchPhase = "sed -i -e 's|bytestring.*,|bytestring,|' graphviz.cabal";
   meta = {
     homepage = "http://projects.haskell.org/graphviz/";
     description = "Bindings to Graphviz for graph visualisation";