diff --git a/hamlet.cabal b/hamlet.cabal
--- a/hamlet.cabal
+++ b/hamlet.cabal
@@ -1,5 +1,5 @@
 name:            hamlet
-version:         1.1.1
+version:         1.1.1.1
 license:         MIT
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>
@@ -69,7 +69,7 @@
     build-depends: hamlet
                  , base             >= 4       && < 5
                  , parsec           >= 2       && < 4
-                 , containers       >= 0.2     && < 0.5
+                 , containers       >= 0.2
                  , text             >= 0.7     && < 1
                  , HUnit
                  , hspec            >= 1.3