diff --git a/authenticate-oauth.cabal b/authenticate-oauth.cabal
--- a/authenticate-oauth.cabal
+++ b/authenticate-oauth.cabal
@@ -1,6 +1,6 @@
 
 name:            authenticate-oauth
-version:         1.4.0.5
+version:         1.4.0.6
 license:         BSD3
 license-file:    LICENSE
 author:          Hiromi Ishii
@@ -18,7 +18,7 @@
                    , http-conduit                  >= 1.4
                    , transformers                  >= 0.1      && < 0.4
                    , bytestring                    >= 0.9
-                   , crypto-pubkey-types           >= 0.1      && < 0.3
+                   , crypto-pubkey-types           >= 0.1      && < 0.4
                    , RSA                           >= 1.2      && < 1.3
                    , time
                    , data-default