diff --git a/Web/Authenticate/OAuth.hs b/Web/Authenticate/OAuth.hs
--- a/Web/Authenticate/OAuth.hs
+++ b/Web/Authenticate/OAuth.hs
@@ -194,7 +194,7 @@
 -- Credentials
 
 
--- | Data type for redential.
+-- | Data type for credential.
 newtype Credential = Credential -- we can easily change it back to "data" later if needed, right?
     { unCredential :: [(BS.ByteString, BS.ByteString)] }
     deriving (Show, Eq, Ord, Read, Data, Typeable)
diff --git a/authenticate-oauth.cabal b/authenticate-oauth.cabal
--- a/authenticate-oauth.cabal
+++ b/authenticate-oauth.cabal
@@ -1,5 +1,5 @@
 name:            authenticate-oauth
-version:         1.6
+version:         1.6.0.1
 license:         BSD3
 license-file:    LICENSE
 author:          Hiromi Ishii
@@ -19,7 +19,7 @@
                    , transformers                  >= 0.1      && < 0.6
                    , bytestring                    >= 0.9
                    , crypto-pubkey-types           >= 0.1      && < 0.5
-                   , RSA                           >= 2.0      && < 2.3
+                   , RSA                           >= 2.0      && < 2.5
                    , time
                    , data-default
                    , base64-bytestring             >= 0.1      && < 1.1