diff --git a/example/Keys.hs b/example/Keys.hs
--- a/example/Keys.hs
+++ b/example/Keys.hs
@@ -10,7 +10,7 @@
 weiboKey :: OAuth2
 weiboKey = OAuth2 { oauthClientId = "1962132691"
                   , oauthClientSecret = "a2ad30383bdff9bcb12be6a3d30deeb1"
-                  , oauthCallback = Just [uri|http://127.0.0.1:9988/oauthCallback|]
+                  , oauthCallback = Just [uri|http://127.0.0.1:9988/oauth2/callback|]
                   , oauthOAuthorizeEndpoint = [uri|https://api.weibo.com/oauth2/authorize|]
                   , oauthAccessTokenEndpoint = [uri|https://api.weibo.com/oauth2/access_token|]
                   }
@@ -19,7 +19,7 @@
 githubKey :: OAuth2
 githubKey = OAuth2 { oauthClientId = "bf86d338485a96a93c88"
                    , oauthClientSecret = "a1c00dada665dc00aa6fafe0495c7c885f82d1ce"
-                   , oauthCallback = Just [uri|http://127.0.0.1:9988/githubCallback|]
+                   , oauthCallback = Just [uri|http://127.0.0.1:9988/oauth2/callback|]
                    , oauthOAuthorizeEndpoint = [uri|https://github.com/login/oauth/authorize|]
                    , oauthAccessTokenEndpoint = [uri|https://github.com/login/oauth/access_token|]
                    }
@@ -28,7 +28,7 @@
 googleKey :: OAuth2
 googleKey = OAuth2 { oauthClientId = "886894027376.apps.googleusercontent.com"
                    , oauthClientSecret = "27w98gwGB1h8N5a6JQ2bT_nm"
-                   , oauthCallback = Just [uri|http://127.0.0.1:9988/googleCallback|]
+                   , oauthCallback = Just [uri|http://127.0.0.1:9988/oauth2/callback|]
                    , oauthOAuthorizeEndpoint = [uri|https://accounts.google.com/o/oauth2/auth|]
                    , oauthAccessTokenEndpoint = [uri|https://www.googleapis.com/oauth2/v3/token|]
                    }
@@ -37,7 +37,7 @@
 facebookKey :: OAuth2
 facebookKey = OAuth2 { oauthClientId = "414630782030965"
                      , oauthClientSecret = "0e648eae100da4d03f16594f231fc1d0"
-                     , oauthCallback = Just [uri|http://t.haskellcn.org/cb|]
+                     , oauthCallback = Just [uri|http://127.0.0.1:9988/oauth2/callback|]
                      , oauthOAuthorizeEndpoint = [uri|https://www.facebook.com/dialog/oauth|]
                      , oauthAccessTokenEndpoint = [uri|https://graph.facebook.com/v2.3/oauth/access_token|]
                      }
@@ -80,8 +80,8 @@
                     }
 
 oktaKey :: OAuth2
-oktaKey = OAuth2 { oauthClientId = "xxx"
-                 , oauthClientSecret = "xxx"
+oktaKey = OAuth2 { oauthClientId = "0oad3popatwUIhWV40h7"
+                 , oauthClientSecret = "YFqXRjtsy7IYRbueiG2tcgHzhaawLccxqq5ruPfN"
                  , oauthCallback = Just [uri|http://localhost:9988/oauth2/callback|]
                  , oauthOAuthorizeEndpoint = [uri|https://dev-148986.oktapreview.com/oauth2/v1/authorize|]
                  , oauthAccessTokenEndpoint = [uri|https://dev-148986.oktapreview.com/oauth2/v1/token|]
diff --git a/hoauth2.cabal b/hoauth2.cabal
--- a/hoauth2.cabal
+++ b/hoauth2.cabal
@@ -1,6 +1,6 @@
 Name:                hoauth2
 -- http://wiki.haskell.org/Package_versioning_policy
-Version:             1.8.6
+Version:             1.8.7
 
 Synopsis:            Haskell OAuth2 authentication client
 
@@ -127,7 +127,7 @@
                        http-conduit      >= 2.1    && < 2.4,
                        http-types        >= 0.11    && < 0.13,
                        wai               >= 3.2    && < 3.3,
-                       warp              >= 3.2    && < 3.3,
+                       warp              >= 3.2    && < 3.4,
                        containers        >= 0.4    && < 0.7,
                        aeson             >= 1.0.0.0 && < 1.5,
                        microlens            >= 0.4.0 && < 0.5,