diff --git a/pkgs/development/libraries/haskell/haxr/default.nix b/pkgs/development/libraries/haskell/haxr/default.nix
index 12f2b2f84f3..1283d3a4a59 100644
--- a/pkgs/development/libraries/haskell/haxr/default.nix
+++ b/pkgs/development/libraries/haskell/haxr/default.nix
@@ -1,17 +1,15 @@
-{ cabal, blazeBuilder, dataenc, HaXml, HTTP, mtl, network, time
-, utf8String
+{ cabal, base64Bytestring, blazeBuilder, HaXml, HTTP, mtl, network
+, time, utf8String
 }:
 
 cabal.mkDerivation (self: {
   pname = "haxr";
-  version = "3000.8.5";
-  sha256 = "1gfifqc7ldklapnymwd9ss0lll6q87sbg1hc6pa4c9sh275x1rz6";
+  version = "3000.9.0.1";
+  sha256 = "106hw8ysjx12dvwij4ld6n54mxj2yl1p7iihp2fwz50v50mz6102";
   buildDepends = [
-    blazeBuilder dataenc HaXml HTTP mtl network time utf8String
+    base64Bytestring blazeBuilder HaXml HTTP mtl network time
+    utf8String
   ];
-  patchPhase = ''
-    sed -i haxr.cabal -e 's|HaXml == 1.22.\*|HaXml|'
-  '';
   meta = {
     homepage = "http://www.haskell.org/haskellwiki/HaXR";
     description = "XML-RPC client and server library";