diff --git a/cryptohash.cabal b/cryptohash.cabal
--- a/cryptohash.cabal
+++ b/cryptohash.cabal
@@ -1,5 +1,5 @@
 Name:                cryptohash
-Version:             0.6
+Version:             0.6.1
 Description:
     A collection of crypto hashes, with a practical incremental and one-pass, pure APIs,
     with performance close to the fastest implementations available in others languages.
@@ -15,6 +15,7 @@
 Category:            Data, Cryptography
 Build-Type:          Simple
 Cabal-Version:       >=1.6
+Homepage:            http://github.com/vincenthz/hs-cryptohash
 data-files:          README
 
 extra-source-files:
@@ -29,10 +30,13 @@
 
 Flag cryptoapi
   Description:       Defines crypto-api instances
-  Default:           False
+  Default:           True
 
 Library
-  Build-Depends:     base >= 3 && < 5, bytestring
+  Build-Depends:     base >= 4 && < 6, bytestring
+  if flag(cryptoapi)
+    Build-depends:   crypto-api >= 0.1, tagged >= 0.1, cereal >= 0.2
+    cpp-options:     -DHAVE_CRYPTOAPI
   Extensions:        ForeignFunctionInterface
   Exposed-modules:   Crypto.Hash.SHA1
                      Crypto.Hash.SHA224