diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2012-2014, Renzo Carbonara
+Copyright (c) 2012-2016, Renzo Carbonara
 Copyright (c) 2012-2012, Paolo Capriotti
 
 All rights reserved.
diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,8 @@
+# Version 0.6.4.1
+
+* Raise upper-bound dependency on `transformers` and `pipes`.
+
+
 # Version 0.6.4
 
 * The various `fromServe` and `toServe*` pipes from
diff --git a/pipes-network.cabal b/pipes-network.cabal
--- a/pipes-network.cabal
+++ b/pipes-network.cabal
@@ -1,12 +1,12 @@
 name:               pipes-network
-version:            0.6.4
+version:            0.6.4.1
 license:            BSD3
 license-file:       LICENSE
-copyright:          Copyright (c) Renzo Carbonara 2012-2014, Paolo Capriotti 2012-2012.
+copyright:          Copyright (c) Renzo Carbonara 2012-2016, Paolo Capriotti 2012-2012.
 author:             Renzo Carbonara
 maintainer:         renzocarbonaraλgmail.com
 stability:          Experimental
-tested-with:        GHC == 7.6.3
+tested-with:        GHC == 8.0.1
 homepage:           https://github.com/k0001/pipes-network
 bug-reports:        https://github.com/k0001/pipes-network/issues
 category:           Pipes, Network
@@ -42,9 +42,9 @@
         bytestring     (>=0.9.2.1),
         network,
         network-simple (>=0.4.0.1 && <0.5),
-        pipes          (>=4.0 && <4.2),
+        pipes          (>=4.0 && <4.3),
         pipes-safe     (>=2.1 && <2.3),
-        transformers   (>=0.2 && <0.5)
+        transformers   (>=0.2 && <0.6)
     exposed-modules:
         Pipes.Network.TCP
         Pipes.Network.TCP.Safe