diff --git a/network-transport-tests.cabal b/network-transport-tests.cabal
--- a/network-transport-tests.cabal
+++ b/network-transport-tests.cabal
@@ -1,5 +1,5 @@
 name:                network-transport-tests
-version:             0.2.4.2
+version:             0.2.4.3
 synopsis:            Unit tests for Network.Transport implementations
 -- description:
 homepage:            http://haskell-distributed.github.com
@@ -24,7 +24,7 @@
   -- other-modules:
   build-depends:       base >= 4.5 && < 5,
                        network-transport >= 0.4.1.0 && < 0.6,
-                       containers >= 0.4 && < 0.6,
+                       containers >= 0.4 && < 0.7,
                        bytestring >= 0.9 && < 0.11,
                        random >= 1.0 && < 1.2,
                        mtl >= 2.1 && < 2.3,