diff --git a/stringsearch.cabal b/stringsearch.cabal
--- a/stringsearch.cabal
+++ b/stringsearch.cabal
@@ -7,7 +7,7 @@
 -- The package version. See the Haskell package versioning policy
 -- (http://www.haskell.org/haskellwiki/Package_versioning_policy) for
 -- standards guiding when and how versions should be incremented.
-Version:             0.3.6.3
+Version:             0.3.6.4
 
 Homepage:            https://bitbucket.org/dafis/stringsearch
 Bug-reports:         https://bitbucket.org/dafis/stringsearch/issues
@@ -83,7 +83,7 @@
   -- Packages needed in order to build this package.
   if flag(base4)
     Build-depends:   base >= 4 && < 5, array >= 0.3 && < 0.5,
-                     bytestring >= 0.9 && < 1, containers >= 0.3 && < 0.5
+                     bytestring >= 0.9 && < 1, containers >= 0.3 && < 0.6
   else
     if flag(base3)
       Build-depends: base >= 3 && < 4, array >= 0.1 && < 0.4,