diff --git a/Network/RTorrent/Command/Internals.hs b/Network/RTorrent/Command/Internals.hs
index 622b51f..7b3065b 100644
--- a/Network/RTorrent/Command/Internals.hs
+++ b/Network/RTorrent/Command/Internals.hs
@@ -28,7 +28,7 @@ module Network.RTorrent.Command.Internals (
 
 import Control.Applicative
 import Control.DeepSeq
-import Control.Monad.Error
+import Control.Monad.Except
 import Control.Monad.Identity
 
 import qualified Codec.Binary.UTF8.String as U
@@ -95,7 +95,7 @@ single v@(ValueStruct vars) = maybe
 single v = fail $ "Failed to match a singleton array, got: " ++ show v
 
 parseValue :: (Monad m, XmlRpcType a) => Value -> m a
-parseValue = fromRight . runIdentity . runErrorT . fromValue 
+parseValue = fromRight . runIdentity . runExceptT . fromValue 
   where
     fromRight (Right r) = return r
     fromRight (Left e) = fail $ "parseValue failed: " ++ e
diff --git a/Network/RTorrent/RPC.hs b/Network/RTorrent/RPC.hs
index a010412..a7abdcd 100644
--- a/Network/RTorrent/RPC.hs
+++ b/Network/RTorrent/RPC.hs
@@ -99,7 +99,7 @@ module Network.RTorrent.RPC (
     , callRTorrent 
     ) where
 
-import Control.Monad.Error (ErrorT(..), throwError, strMsg)
+import Control.Monad.Except (ExceptT(..), throwError, runExceptT)
 import Control.Exception
 import Data.Monoid
 import qualified Data.ByteString as BS
@@ -111,17 +111,17 @@ import qualified Network.RTorrent.Command.Internals as C
 import Network.RTorrent.CommandList
 import Network.RTorrent.SCGI
 
-callRTorrentRaw :: HostName -> Int -> C.RTMethodCall -> ErrorT String IO Value
+callRTorrentRaw :: HostName -> Int -> C.RTMethodCall -> ExceptT String IO Value
 callRTorrentRaw host port calls = do
     let request = Body [] . mconcat . LB.toChunks $ renderCall call 
-    Body _ content <- ErrorT $ query host port request
+    Body _ content <- ExceptT $ query host port request
     let cs = map (toEnum . fromEnum) $ BS.unpack content
     response <- parseResponse cs
     case response of
         Return ret -> case ret of
             ValueArray arr -> return $ ValueArray arr
-            val -> throwError . strMsg $ "Got value of type " ++ show (getType val)
-        Fault code err -> throwError . strMsg $ show code ++ ": " ++ err
+            val -> throwError $ "Got value of type " ++ show (getType val)
+        Fault code err -> throwError $ show code ++ ": " ++ err
   where
     call = MethodCall "system.multicall" [C.runRTMethodCall calls]
 
@@ -134,7 +134,7 @@ callRTorrent :: Command a =>
     -> a 
     -> IO (Either String (Ret a))
 callRTorrent host port command = 
-    (runErrorT $ do
+    (runExceptT $ do
         ret <- callRTorrentRaw host port (C.commandCall command)
         C.commandValue command ret) 
         `catches` [ Handler (\e -> return . Left $ show (e :: IOException))
diff --git a/rtorrent-rpc.cabal b/rtorrent-rpc.cabal
index 39b1323..937ab79 100644
--- a/rtorrent-rpc.cabal
+++ b/rtorrent-rpc.cabal
@@ -36,7 +36,7 @@ library
                        mtl >=2.1 && <2.3,
                        bytestring >=0.10 && <0.11 ,
                        network >=2.6,
-                       haxr >=3000.10.3.1 && <3000.11,
+                       haxr >=3000.10.4.2 && <3000.10.5,
                        blaze-builder >=0.3 && <0.4,
                        blaze-textual >=0.2 && <0.3,
                        attoparsec >=0.12 && <0.13,