diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -1,27 +1,27 @@
-Copyright (c) 2011, Holger Reinhardt
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions
-are met:
-1. Redistributions of source code must retain the above copyright
-   notice, this list of conditions and the following disclaimer.
-2. Redistributions in binary form must reproduce the above copyright
-   notice, this list of conditions and the following disclaimer in the
-   documentation and/or other materials provided with the distribution.
-3. Neither the name of the author nor the names of his contributors
-   may be used to endorse or promote products derived from this software
-   without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
-FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-SUCH DAMAGE.
+Copyright (c) 2011, Holger Reinhardt
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+3. Neither the name of the author nor the names of his contributors
+   may be used to endorse or promote products derived from this software
+   without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGE.
diff --git a/Network/AMQP.hs b/Network/AMQP.hs
--- a/Network/AMQP.hs
+++ b/Network/AMQP.hs
@@ -563,18 +563,20 @@
     initialResponse = E.encodeUtf8 loginName
     challengeResponse = return $ (E.encodeUtf8 "My password is ") `BS.append` (E.encodeUtf8 loginPassword)
 
--- | @qos chan prefetchSize prefetchCount@ limits the amount of data the server
+-- | @qos chan prefetchSize prefetchCount global@ limits the amount of data the server
 -- delivers before requiring acknowledgements. @prefetchSize@ specifies the
 -- number of bytes and @prefetchCount@ the number of messages. In both cases
 -- the value 0 means unlimited.
 --
+-- The meaning of the @global@ flag is explained here: <http://www.rabbitmq.com/consumer-prefetch.html>
+--
 -- NOTE: RabbitMQ does not implement prefetchSize and will throw an exception if it doesn't equal 0.
-qos :: Channel -> Word32 -> Word16 -> IO ()
-qos chan prefetchSize prefetchCount = do
+qos :: Channel -> Word32 -> Word16 -> Bool -> IO ()
+qos chan prefetchSize prefetchCount global = do
     (SimpleMethod Basic_qos_ok) <- request chan (SimpleMethod (Basic_qos
         prefetchSize
         prefetchCount
-        False
+        global
         ))
     return ()
 
diff --git a/Setup.lhs b/Setup.lhs
--- a/Setup.lhs
+++ b/Setup.lhs
@@ -1,3 +1,3 @@
-#!/usr/bin/env runhaskell
-> import Distribution.Simple
-> main = defaultMain
+#!/usr/bin/env runhaskell
+> import Distribution.Simple
+> main = defaultMain
diff --git a/amqp.cabal b/amqp.cabal
--- a/amqp.cabal
+++ b/amqp.cabal
@@ -1,5 +1,5 @@
 Name:                amqp
-Version:             0.8.3
+Version:             0.9
 Synopsis:            Client library for AMQP servers (currently only RabbitMQ)
 Description:         Client library for AMQP servers (currently only RabbitMQ)
                      .