diff --git a/pkgs/development/libraries/haskell/gitit/default.nix b/pkgs/development/libraries/haskell/gitit/default.nix
index 148750e9ddcd..41d521805ce7 100644
--- a/pkgs/development/libraries/haskell/gitit/default.nix
+++ b/pkgs/development/libraries/haskell/gitit/default.nix
@@ -19,7 +19,7 @@ cabal.mkDerivation (self: {
     zlib
   ];
   patchPhase = ''
-    sed -i -e 's|hslogger.*,|hslogger,|' gitit.cabal
+    sed -i -e 's|hslogger.*,|hslogger,|' -e 's|base64-bytestring.*,|base64-bytestring,|' gitit.cabal
   '';
   meta = {
     homepage = "http://gitit.net";