Index: b/authenticate-oauth.cabal
===================================================================
--- a/authenticate-oauth.cabal
+++ b/authenticate-oauth.cabal
@@ -1,6 +1,7 @@
 cabal-version:   >= 1.10
 name:            authenticate-oauth
 version:         1.7
+x-revision: 1
 license:         BSD3
 license-file:    LICENSE
 author:          Hiromi Ishii
@@ -17,7 +18,7 @@ library
     default-language: Haskell2010
     build-depends:   base                          >= 4.10     && < 5
                    , http-client                   >= 0.3
-                   , transformers                  >= 0.1      && < 0.6
+                   , transformers                  >= 0.1      && < 0.7
                    , bytestring                    >= 0.9
                    , crypto-pubkey-types           >= 0.1      && < 0.5
                    , RSA                           >= 2.0      && < 2.5
