diff --git a/zlib-enum.cabal b/zlib-enum.cabal
--- a/zlib-enum.cabal
+++ b/zlib-enum.cabal
@@ -1,5 +1,5 @@
 name:           zlib-enum
-version:        0.2.2.1
+version:        0.2.3
 license:        MIT
 license-file:   LICENSE
 author:         Paulo Tanimoto <ptanimoto@gmail.com>
@@ -22,8 +22,8 @@
 library
     if flag(test)
          Buildable: False
-    build-depends: base                  >= 4 && < 5
-                 , bytestring            >= 0.9 && < 0.10
+    build-depends: base                  >= 4   && < 5
+                 , bytestring            >= 0.9 && < 0.11
                  , transformers          >= 0.2 && < 0.4
                  , enumerator            == 0.4.*
                  , zlib-bindings         == 0.1.*
@@ -36,14 +36,14 @@
     if flag(test)
         Buildable: True
         build-depends:
-              base                       >= 4.0   &&   < 5.0
-            , bytestring                 >= 0.9   &&   < 0.10
-            , transformers               >= 0.2   &&   < 0.4
-            , enumerator                 >= 0.4   &&   < 0.5
+              base                       >= 4.0      &&   < 5.0
+            , bytestring                 >= 0.9      &&   < 0.11
+            , transformers               >= 0.2      &&   < 0.4
+            , enumerator                 >= 0.4      &&   < 0.5
             , zlib-bindings              >= 0.1
-            , test-framework             >= 0.6   &&   < 0.7
+            , test-framework             >= 0.6      &&   < 0.7
             , test-framework-quickcheck2 >= 0.2.12.1 &&   < 0.3.0
-            , QuickCheck                 >= 2.4   &&   < 2.5
+            , QuickCheck                 >= 2.4      &&   < 2.5
     else
         Buildable: False
     ghc-options:     -Wall