diff --git a/pkgs/development/libraries/haskell/graphviz/default.nix b/pkgs/development/libraries/haskell/graphviz/default.nix
index 77245ec8c91b..6f7aea3289e3 100644
--- a/pkgs/development/libraries/haskell/graphviz/default.nix
+++ b/pkgs/development/libraries/haskell/graphviz/default.nix
@@ -14,6 +14,9 @@ cabal.mkDerivation (self: {
     colour dlist fgl filepath polyparse QuickCheck temporary text
     transformers wlPprintText
   ];
+  patchPhase = ''
+    sed -i -e 's|polyparse.*,|polyparse,|' graphviz.cabal
+  '';
   doCheck = false;
   meta = {
     homepage = "http://projects.haskell.org/graphviz/";